{"id":2866,"date":"2026-03-25T00:00:00","date_gmt":"2026-03-25T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/products\/mmf-sfp-module-multimode-transceivers-guide\/"},"modified":"2026-06-22T03:48:03","modified_gmt":"2026-06-22T03:48:03","slug":"mmf-sfp-module-multimode-transceivers-guide","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/products\/mmf-sfp-module-multimode-transceivers-guide","title":{"rendered":"H\u01b0\u1edbng d\u1eabn v\u1ec1 Module SFP MMF 850nm S\u1ee3i Quang \u0110a Ch\u1ebf \u0110\u1ed9"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"536\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/543ef6752aa144cd99f084fdc576693f-1024x536.jpg\" alt=\"MMF SFP Module 850nm Fiber Multimode Transceivers Guide\" class=\"wp-image-2857\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/543ef6752aa144cd99f084fdc576693f-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/543ef6752aa144cd99f084fdc576693f-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/543ef6752aa144cd99f084fdc576693f-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/543ef6752aa144cd99f084fdc576693f-18x9.jpg 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/543ef6752aa144cd99f084fdc576693f.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 thu ph\u00e1t quang ph\u00f9 h\u1ee3p kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t chi ti\u1ebft k\u1ef9 thu\u1eadt\u2014m\u00e0 c\u00f2n \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u n\u0103ng, hi\u1ec7u qu\u1ea3 chi ph\u00ed v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng d\u00e0i h\u1ea1n. Trong s\u1ed1 c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t cho truy\u1ec1n d\u1eabn d\u1eef li\u1ec7u kho\u1ea3ng c\u00e1ch ng\u1eafn l\u00e0 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/492102.htm\">m\u00f4-\u0111un SFP MMF<\/a> (Multimode Fiber Small Form-factor Pluggable), m\u1ed9t thi\u1ebft b\u1ecb nh\u1ecf g\u1ecdn, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491453.htm\">b\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3ng<\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 cung c\u1ea5p k\u1ebft n\u1ed1i t\u1ed1c \u0111\u1ed9 cao v\u00e0 \u0111\u00e1ng tin c\u1eady tr\u00ean c\u00e1p s\u1ee3i quang \u0111a mode.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang nghi\u00ean c\u1ee9u v\u1ec1 c\u00e1c m\u00f4-\u0111un SFP MMF, r\u1ea5t c\u00f3 th\u1ec3 b\u1ea1n \u0111ang c\u1ed1 g\u1eafng tr\u1ea3 l\u1eddi m\u1ed9t (ho\u1eb7c nhi\u1ec1u) trong nh\u1eefng c\u00e2u h\u1ecfi then ch\u1ed1t sau \u0111\u00e2y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4-\u0111un SFP \u0111a mode ch\u00ednh x\u00e1c l\u00e0 g\u00ec v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/p><\/li>\n\n\n\n<li><p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa m\u00f4-\u0111un SFP MMF v\u00e0 m\u00f4-\u0111un SFP \u0111\u01a1n mode (SMF) l\u00e0 g\u00ec?<\/p><\/li>\n\n\n\n<li><p>L\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 bi\u1ebft m\u1ed9t m\u00f4-\u0111un SFP c\u00f3 ph\u1ea3i l\u00e0 \u0111a mode hay kh\u00f4ng?<\/p><\/li>\n\n\n\n<li><p>T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00f4-\u0111un SFP \u0111\u01a1n mode v\u1edbi c\u00e1p s\u1ee3i quang \u0111a mode m\u00e0 kh\u00f4ng g\u1eb7p s\u1ef1 c\u1ed1 n\u00e0o kh\u00f4ng?<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0 nh\u1eefng v\u1ea5n \u0111\u1ec1 mang t\u00ednh l\u00fd thuy\u1ebft. Trong tri\u1ec3n khai th\u1ef1c t\u1ebf, vi\u1ec7c kh\u00f4ng t\u01b0\u01a1ng th\u00edch gi\u1eefa lo\u1ea1i s\u1ee3i quang, b\u01b0\u1edbc s\u00f3ng ho\u1eb7c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a b\u1ed9 thu ph\u00e1t l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t g\u00e2y ra s\u1ef1 c\u1ed1 m\u1ea1ng\u2014d\u1eabn \u0111\u1ebfn m\u1ea5t li\u00ean k\u1ebft, suy gi\u1ea3m hi\u1ec7u n\u0103ng ho\u1eb7c chi ph\u00ed ph\u1ea7n c\u1ee9ng kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng n\u1ed9i dung b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u trong h\u01b0\u1edbng d\u1eabn n\u00e0y<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch \u0111\u1ecdc to\u00e0n b\u1ed9 h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n s\u1ebd:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Hi\u1ec3u r\u00f5 m\u00f4-\u0111un SFP MMF l\u00e0 g\u00ec v\u00e0 khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng n\u00f3<\/p><\/li>\n\n\n\n<li><p>T\u00ecm hi\u1ec3u nh\u1eefng kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/smf-optical-transceiver-vs-mmf-optical-transceiver-guide\/\" target=\"_blank\" rel=\"\">m\u00f4-\u0111un SFP MMF v\u00e0 SMF<\/a><\/p><\/li>\n\n\n\n<li><p>Tr\u00e1nh nh\u1eefng sai l\u1ea7m t\u01b0\u01a1ng th\u00edch ph\u1ed5 bi\u1ebfn g\u00e2y ra m\u1ea5t li\u00ean k\u1ebft<\/p><\/li>\n\n\n\n<li><p>Nh\u1eadn di\u1ec7n nhanh c\u00e1c m\u00f4-\u0111un SFP \u0111a mode trong m\u1ea1ng c\u1ee7a b\u1ea1n<\/p><\/li>\n\n\n\n<li><p>\u00c1p d\u1ee5ng khung l\u1ef1a ch\u1ecdn th\u1ef1c ti\u1ec5n \u0111\u1ec3 ch\u1ecdn \u0111\u00fang m\u00f4-\u0111un<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ec sao m\u00f4-\u0111un SFP MMF v\u1eabn c\u00f2n quan tr\u1ecdng<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 s\u1ee3i quang \u0111\u01a1n mode ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u1ea1ng quy m\u00f4 l\u1edbn, c\u00e1c gi\u1ea3i ph\u00e1p \u0111a mode v\u1eabn gi\u1eef vai tr\u00f2 r\u1ea5t quan tr\u1ecdng\u2014\u0111\u1eb7c bi\u1ec7t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Trung t\u00e2m d\u1eef li\u1ec7u (k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c rack)<\/p><\/li>\n\n\n\n<li><p>M\u1ea1ng LAN doanh nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p>C\u00e1c tri\u1ec3n khai kho\u1ea3ng c\u00e1ch ng\u1eafn, m\u1eadt \u0111\u1ed9 cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a ch\u00fang r\u1ea5t r\u00f5 r\u00e0ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chi ph\u00ed h\u1ec7 th\u1ed1ng t\u1ed5ng th\u1ec3 th\u1ea5p h\u01a1n cho kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li>\n\n\n\n<li><p>Tri\u1ec3n khai \u0111\u01a1n gi\u1ea3n h\u01a1n<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 tin c\u1eady \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng t\u1ed1c \u0111\u1ed9 cao (1G, 10G v\u00e0 cao h\u01a1n)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, nh\u1eefng l\u1ee3i \u00edch n\u00e0y ch\u1ec9 ph\u00e1t huy hi\u1ec7u qu\u1ea3 khi m\u00f4-\u0111un \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn v\u00e0 tri\u1ec3n khai \u0111\u00fang c\u00e1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 gi\u00fap b\u1ea1n \u0111i\u1ec1u h\u01b0\u1edbng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, h\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean c\u00e1c th\u00e1ch th\u1ee9c th\u1ef1c t\u1ebf c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 \u00fd \u0111\u1ecbnh t\u00ecm ki\u1ebfm, k\u1ebft h\u1ee3p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u1ea3i th\u00edch k\u1ef9 thu\u1eadt r\u00f5 r\u00e0ng<\/p><\/li>\n\n\n\n<li><p>Th\u00f4ng tin th\u1ef1c ti\u1ec5n v\u1ec1 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/p><\/li>\n\n\n\n<li><p>C\u00e1c khu\u00f4n kh\u1ed5 ra quy\u1ebft \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 D\u00f9 b\u1ea1n l\u00e0 k\u1ef9 s\u01b0 m\u1ea1ng, chuy\u00ean gia t\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng hay chuy\u00ean gia mua s\u1eafm, b\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u00fap b\u1ea1n \u0111\u01b0a ra l\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn\u2014v\u00e0 tr\u00e1nh nh\u1eefng sai l\u1ea7m t\u1ed1n k\u00e9m\u2014khi l\u00e0m vi\u1ec7c v\u1edbi <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488468.htm\">B\u1ed9 thu ph\u00e1t \u0111a ch\u1ebf \u0111\u1ed9<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd34 B\u1ed9 m\u00f4-\u0111un SFP MMF l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ed9 m\u00f4-\u0111un SFP MMF l\u00e0 m\u1ed9t b\u1ed9 thu ph\u00e1t quang nh\u1ecf g\u1ecdn, c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3ng, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 truy\u1ec1n v\u00e0 nh\u1eadn d\u1eef li\u1ec7u qua <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/om1-om2-om3-om4-om5-multimode-fiber-guide\/\">c\u00e1p quang \u0111a mode<\/a> (MMF) cho c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng c\u1ef1 ly ng\u1eafn v\u00e0 t\u1ed1c \u0111\u1ed9 cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ed9 m\u00f4-\u0111un SFP MMF chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n t\u1eeb b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn th\u00e0nh t\u00edn hi\u1ec7u quang v\u00e0 g\u1eedi ch\u00fang qua s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9\u2014th\u01b0\u1eddng s\u1eed d\u1ee5ng b\u01b0\u1edbc s\u00f3ng 850 nm\u2014trong ph\u1ea1m vi l\u00ean \u0111\u1ebfn v\u00e0i tr\u0103m m\u00e9t.<strong>.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/227eca22f8654ab4ad3a1625772139da.jpg\" alt=\"What Is an MMF SFP Module?\" class=\"wp-image-2858\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/227eca22f8654ab4ad3a1625772139da.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/227eca22f8654ab4ad3a1625772139da-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/227eca22f8654ab4ad3a1625772139da-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/227eca22f8654ab4ad3a1625772139da-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/227eca22f8654ab4ad3a1625772139da-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 m\u00f4-\u0111un SFP MMF<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ean trong b\u1ed9 m\u00f4-\u0111un SFP MMF c\u00f3 hai th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>B\u1ed9 ph\u00e1t (TX):<\/strong> Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng<\/p><\/li>\n\n\n\n<li><p><strong>B\u1ed9 thu (RX):<\/strong> Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng \u0111\u1ea7u v\u00e0o tr\u1edf l\u1ea1i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea7n l\u1edbn b\u1ed9 m\u00f4-\u0111un SFP MMF s\u1eed d\u1ee5ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-duplex-lc-connector-explained\/\">LC k\u00e9p<\/a>, ngh\u0129a l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t s\u1ee3i quang d\u00f9ng \u0111\u1ec3 truy\u1ec1n (TX)<\/p><\/li>\n\n\n\n<li><p>M\u1ed9t s\u1ee3i quang d\u00f9ng \u0111\u1ec3 nh\u1eadn (RX)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u00fd do v\u00ec sao b\u1ed9 m\u00f4-\u0111un SFP MMF ti\u00eau chu\u1ea9n y\u00eau c\u1ea7u hai s\u1ee3i quang, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ed9t\u2014\u0111\u00e2y l\u00e0 \u0111i\u1ec3m g\u00e2y nh\u1ea7m l\u1eabn ph\u1ed5 bi\u1ebfn \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF) l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 l\u00e0 m\u1ed9t lo\u1ea1i s\u1ee3i quang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 truy\u1ec1n \u0111\u1ed3ng th\u1eddi nhi\u1ec1u t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng (c\u00e1c mode) th\u00f4ng qua l\u00f5i c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>K\u00edch th\u01b0\u1edbc l\u00f5i:<\/strong> 50 \u00b5m ho\u1eb7c 62,5 \u00b5m<\/p><\/li>\n\n\n\n<li><p><strong>Ngu\u1ed3n s\u00e1ng:<\/strong> Th\u01b0\u1eddng l\u00e0 LED ho\u1eb7c <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/overview-of-vcsel\/\" target=\"_blank\" rel=\"\">Laser VCSEL<\/a><\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-wavelengths-850nm-1310nm-1550nm-guide\/\" target=\"_blank\" rel=\"\"><strong>B\u01b0\u1edbc s\u00f3ng<br><\/strong><\/a><strong>:<\/strong> Th\u01b0\u1eddng <strong>850 nm<\/strong><\/p><\/li>\n\n\n\n<li><p><strong>Kho\u1ea3ng c\u00e1ch:<\/strong> C\u1ef1 ly ng\u1eafn (v\u00ed d\u1ee5: 100 m\u2013300 m cho c\u00e1c li\u00ean k\u1ebft 10G)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec s\u1eed d\u1ee5ng nhi\u1ec1u \u0111\u01b0\u1eddng \u0111i c\u1ee7a \u00e1nh s\u00e1ng, t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 ch\u1ecbu \u1ea3nh h\u01b0\u1edfng c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng t\u00e1n s\u1eafc mode tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i\u2014\u0111\u00e2y l\u00e0 l\u00fd do v\u00ec sao MMF ph\u00f9 h\u1ee3p nh\u1ea5t cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ef1 ly ng\u1eafn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c lo\u1ea1i b\u1ed9 m\u00f4-\u0111un SFP MMF ph\u1ed5 bi\u1ebfn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ed9 m\u00f4-\u0111un SFP MMF th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo t\u1ed1c \u0111\u1ed9 v\u00e0 ti\u00eau chu\u1ea9n:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u1ed1c \u0111\u1ed9<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ti\u00eau chu\u1ea9n<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Kho\u1ea3ng c\u00e1ch \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/478230.htm\"><strong>C\u00e1c h\u1ea1n ch\u1ebf m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c xem x\u00e9t n\u1ebfu s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>IEEE 802.3z<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ebfn 550 m<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475415.htm\"><strong>10GBASE-SR<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-ieee-802-3ae-10-gigabit-ethernet\/\">IEEE 802.3ae<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 300 m (OM3)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/473141.htm\"><strong>25GBASE-LR<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>25G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/25gbase-ieee-802-3by-single-lane-25gbe-standard\/\">IEEE 802.3by<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a 100 m<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean \u201c<a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477562.htm\">SX<\/a>\u201d v\u00e0 \u201c<a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476059.htm\">SR<\/a>\u201d th\u01b0\u1eddng ch\u1ec9 c\u00e1c thi\u1ebft b\u1ecb quang \u0111a ch\u1ebf \u0111\u1ed9 (c\u1ef1 ly ng\u1eafn).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a b\u1ed9 m\u00f4-\u0111un SFP MMF<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ed9 m\u00f4-\u0111un SFP MMF \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng y\u00eau c\u1ea7u k\u1ebft n\u1ed1i c\u1ef1 ly ng\u1eafn v\u00e0 m\u1eadt \u0111\u1ed9 cao:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft trung t\u00e2m d\u1eef li\u1ec7u (t\u1eeb k\u1ec7 n\u00e0y sang k\u1ec7 kh\u00e1c)<\/p><\/li>\n\n\n\n<li><p>M\u1ea1ng LAN doanh nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p>K\u1ebft n\u1ed1i t\u1eeb m\u00e1y ch\u1ee7 \u0111\u1ebfn b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-you-should-know-about-storage-area-network-san\/\" target=\"_blank\" rel=\"\">M\u1ea1ng khu v\u1ef1c l\u01b0u tr\u1eef<\/a> (SAN)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c t\u00ecnh hu\u1ed1ng n\u00e0y \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chi ph\u00ed quang h\u1ecdc th\u1ea5p h\u01a1n so v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u01a1n ch\u1ebf \u0111\u1ed9<\/p><\/li>\n\n\n\n<li><p>D\u1ec5 l\u1eafp \u0111\u1eb7t h\u01a1n trong c\u00e1c m\u00f4i tr\u01b0\u1eddng ch\u1eadt h\u1eb9p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t m\u00f4-\u0111un SFP MMF l\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho m\u1ea1ng quang t\u1ea7m ng\u1eafn, mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa chi ph\u00ed, hi\u1ec7u n\u0103ng v\u00e0 t\u00ednh \u0111\u01a1n gi\u1ea3n\u2014mi\u1ec5n l\u00e0 \u0111\u01b0\u1ee3c gh\u00e9p n\u1ed1i \u0111\u00fang c\u00e1ch v\u1edbi c\u00e1p quang \u0111a ch\u1ebf \u0111\u1ed9 v\u00e0 thi\u1ebft b\u1ecb m\u1ea1ng t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd so s\u00e1nh <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/482144.htm\">SFP MMF<\/a> v\u1edbi c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf \u0111\u01a1n ch\u1ebf \u0111\u1ed9 \u0111\u1ec3 gi\u00fap b\u1ea1n quy\u1ebft \u0111\u1ecbnh \u0111\u00e2u l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p cho \u1ee9ng d\u1ee5ng c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd34 SFP MMF so v\u1edbi SFP SMF: S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1ef1a ch\u1ecdn b\u1ed9 thu ph\u00e1t quang, m\u1ed9t trong nh\u1eefng quy\u1ebft \u0111\u1ecbnh quan tr\u1ecdng nh\u1ea5t l\u00e0 ch\u1ecdn gi\u1eefa m\u00f4-\u0111un SFP MMF (c\u00e1p quang \u0111a ch\u1ebf \u0111\u1ed9) v\u00e0 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475852.htm\">SFP SMF<\/a> (c\u00e1p quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9). M\u1eb7c d\u00f9 b\u1ec1 ngo\u00e0i ch\u00fang tr\u00f4ng gi\u1ed1ng h\u1ec7t nhau, nh\u01b0ng ch\u00fang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1ea1ng r\u1ea5t kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP MMF \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c k\u1ebft n\u1ed1i ng\u1eafn, chi ph\u00ed th\u1ea5p b\u00ean trong t\u00f2a nh\u00e0 ho\u1eb7c trung t\u00e2m d\u1eef li\u1ec7u, trong khi c\u00e1c m\u00f4-\u0111un SFP SMF \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa h\u00e0ng kil\u00f4m\u00e9t b\u1eb1ng t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng t\u1eadp trung laser.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e507bd17c5784afea727639040de6178-1024x576.jpg\" alt=\"MMF SFP vs. SMF SFP: What\u2019s the Difference?\" class=\"wp-image-2859\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e507bd17c5784afea727639040de6178-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e507bd17c5784afea727639040de6178-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e507bd17c5784afea727639040de6178-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e507bd17c5784afea727639040de6178-18x10.jpg 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e507bd17c5784afea727639040de6178.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Lo\u1ea1i c\u00e1p quang: S\u1ef1 kh\u00e1c bi\u1ec7t c\u1ea5u tr\u00fac c\u1ed1t l\u00f5i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00e1c bi\u1ec7t c\u01a1 b\u1ea3n nh\u1ea5t n\u1eb1m \u1edf lo\u1ea1i c\u00e1p quang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 164px;\"\/><col style=\"width: 268px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"164\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"268\"><p>SFP MMF<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>SFP SMF<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"164\"><p><p>Switch model support list<\/p><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"268\"><p>C\u00e1p quang \u0111a ch\u1ebf \u0111\u1ed9 (OM1\u2013OM4)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1p quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 (OS1\u2013OS2)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"164\"><p>K\u00edch th\u01b0\u1edbc l\u00f5i<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"268\"><p>50\u201362,5 \u00b5m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~9 \u00b5m<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"164\"><p>H\u00e0nh vi \u00e1nh s\u00e1ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"268\"><p>Nhi\u1ec1u \u0111\u01b0\u1eddng \u0111i c\u1ee7a \u00e1nh s\u00e1ng (nhi\u1ec1u ch\u1ebf \u0111\u1ed9)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ed9t \u0111\u01b0\u1eddng \u0111i duy nh\u1ea5t c\u1ee7a \u00e1nh s\u00e1ng<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00e1c \u0111\u1ed9ng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>MMF = gh\u00e9p n\u1ed1i d\u1ec5 d\u00e0ng h\u01a1n, nh\u01b0ng ph\u00e2n t\u00e1n t\u00edn hi\u1ec7u nhi\u1ec1u h\u01a1n<\/p><\/li>\n\n\n\n<li><p>SMF = t\u00edn hi\u1ec7u t\u1eadp trung cao, ph\u00e2n t\u00e1n t\u1ed1i thi\u1ec3u<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">B\u01b0\u1edbc s\u00f3ng: 850 nm so v\u1edbi 1310\/1550 nm<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u01b0\u1edbc s\u00f3ng x\u00e1c \u0111\u1ecbnh c\u00e1ch \u00e1nh s\u00e1ng lan truy\u1ec1n trong c\u00e1p quang.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 224px;\"\/><col style=\"width: 234px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"224\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"234\"><p>SFP MMF<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>SFP SMF<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"224\"><p>B\u01b0\u1edbc s\u00f3ng \u0111i\u1ec3n h\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"234\"><p><strong>850 nm<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>1310 nm \/ 1550 nm<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"224\"><p>Ngu\u1ed3n s\u00e1ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"234\"><p>VCSEL \/ LED<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Laser (<a target=\"_self\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/dfb-laser-definition\/\">DFB<\/a> \/ <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/fabry-perot-laser-diodes-in-optical-modules\/\">FP<\/a>)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>850 nm ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 tr\u00ean kho\u1ea3ng c\u00e1ch ng\u1eafn (MMF)<\/p><\/li>\n\n\n\n<li><p>C\u00e1c b\u01b0\u1edbc s\u00f3ng d\u00e0i h\u01a1n l\u00e0m gi\u1ea3m t\u1ed5n hao tr\u00ean kho\u1ea3ng c\u00e1ch xa (SMF)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eabn v\u1ec1 kho\u1ea3ng c\u00e1ch l\u00e0 m\u1ed9t trong nh\u1eefng kh\u00e1c bi\u1ec7t th\u1ef1c ti\u1ec5n quan tr\u1ecdng nh\u1ea5t.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 328px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"328\"><p>Lo\u1ea1i m\u00f4-\u0111un<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ph\u1ea1m vi \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"328\"><p>SFP MMF (SR\/SX)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100 m \u2013 550 m<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"328\"><p>SFP SMF (<a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\">LR<\/a>\/<a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475852.htm\">ER<\/a>\/<a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476089.htm\">ZR<\/a>)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10 km \u2013 80+ km<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00f4ng tin th\u1ef1c t\u1ebf (t\u1eeb ph\u1ea3n h\u1ed3i tri\u1ec3n khai):<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>MMF l\u00fd t\u01b0\u1edfng cho k\u1ebft n\u1ed1i t\u1eeb gi\u00e1 rack n\u00e0y sang gi\u00e1 rack kh\u00e1c ho\u1eb7c t\u1eeb ph\u00f2ng n\u00e0y sang ph\u00f2ng kh\u00e1c<\/p><\/li>\n\n\n\n<li><p>SMF b\u1eaft bu\u1ed9c ph\u1ea3i d\u00f9ng cho m\u1ea1ng t\u1eeb t\u00f2a nh\u00e0 n\u00e0y sang t\u00f2a nh\u00e0 kh\u00e1c ho\u1eb7c m\u1ea1ng khu\u00f4n vi\u00ean<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c y\u1ebfu t\u1ed1 chi ph\u00ed<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 234px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"234\"><p>Y\u1ebfu t\u1ed1<br><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>SFP MMF<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>SFP SMF<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"234\"><p>Chi ph\u00ed m\u00f4-\u0111un<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lower<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"234\"><p>Chi ph\u00ed l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n (c\u00e1p kh\u1ed1i, nhi\u1ec1u l\u00f5i h\u01a1n)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p h\u01a1n tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb kho\u1ea3ng c\u00e1ch<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"234\"><p>T\u1ed5ng chi ph\u00ed h\u1ec7 th\u1ed1ng (cho kho\u1ea3ng c\u00e1ch ng\u1eafn)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kinh t\u1ebf h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Qu\u00e1 m\u1ee9c c\u1ea7n thi\u1ebft cho c\u00e1c li\u00ean k\u1ebft ng\u1eafn<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eadn \u0111\u1ecbnh then ch\u1ed1t:<br><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>MMF ch\u1ec9 mang l\u1ea1i hi\u1ec7u qu\u1ea3 chi ph\u00ed khi kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li>\n\n\n\n<li><p>SMF tr\u1edf n\u00ean kinh t\u1ebf h\u01a1n khi kho\u1ea3ng c\u00e1ch t\u0103ng l\u00ean<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c m\u00f4-\u0111un SFP MMF (t\u1eadp trung v\u00e0o ph\u1ea1m vi ng\u1eafn)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-data-center\/\" target=\"_blank\" rel=\"\">```html<\/a> (t\u1eeb \u0111\u1ea7u t\u1ee7 \u0111\u1ebfn b\u1ed9 chuy\u1ec3n m\u1ea1ch t\u1ed5ng h\u1ee3p)<\/p><\/li>\n\n\n\n<li><p>M\u1ea1ng LAN doanh nghi\u1ec7p<\/p><\/li>\n\n\n\n<li><p>Li\u00ean k\u1ebft m\u00e1y ch\u1ee7<\/p><\/li>\n\n\n\n<li><p>M\u1ea1ng l\u01b0u tr\u1eef (SAN, li\u00ean k\u1ebft ng\u1eafn)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c m\u00f4-\u0111un SFP SMF (t\u1eadp trung v\u00e0o ph\u1ea1m vi d\u00e0i)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea1ng khu\u00f4n vi\u00ean gi\u1eefa c\u00e1c t\u00f2a nh\u00e0<\/p><\/li>\n\n\n\n<li><p>M\u1ea1ng khu v\u1ef1c \u0111\u00f4 th\u1ecb<\/p><\/li>\n\n\n\n<li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-an-isp-internet-service-provider\/\" target=\"_blank\" rel=\"\">However, many beginners are confused by common questions such as:<\/a> Li\u00ean k\u1ebft l\u00f5i<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Nh\u1eadn \u0111\u1ecbnh tri\u1ec3n khai th\u1ef1c t\u1ebf (L\u1ed7i ph\u1ed5 bi\u1ebfn trong th\u1ef1c t\u1ebf)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb kinh nghi\u1ec7m th\u1ef1c \u0111\u1ecba v\u00e0 c\u00e1c th\u1ea3o lu\u1eadn k\u1ef9 thu\u1eadt th\u00f4ng th\u01b0\u1eddng, m\u1ed9t l\u1ed7i th\u01b0\u1eddng g\u1eb7p l\u00e0:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u274c S\u1eed d\u1ee5ng m\u00f4-\u0111un SFP MMF v\u1edbi c\u00e1p quang SMF (ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i)<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c li\u00ean k\u1ebft<\/p><\/li>\n\n\n\n<li><p>T\u1ef7 l\u1ec7 l\u1ed7i cao<\/p><\/li>\n\n\n\n<li><p>M\u1ea5t t\u00edn hi\u1ec7u ho\u1eb7c t\u00edn hi\u1ec7u kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quy t\u1eafc quan tr\u1ecdng: <\/strong>MMF lu\u00f4n ph\u1ea3i t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1p quang MMF, v\u00e0 SMF lu\u00f4n ph\u1ea3i t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1p quang SMF. Hai lo\u1ea1i n\u00e0y kh\u00f4ng th\u1ec3 thay th\u1ebf l\u1eabn nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa m\u00f4-\u0111un SFP MMF v\u00e0 SFP SMF kh\u00f4ng ch\u1ec9 mang t\u00ednh k\u1ef9 thu\u1eadt\u2014m\u00e0 c\u00f2n tr\u1ef1c ti\u1ebfp quy\u1ebft \u0111\u1ecbnh kho\u1ea3ng c\u00e1ch m\u1ea1ng, c\u1ea5u tr\u00fac chi ph\u00ed v\u00e0 thi\u1ebft k\u1ebf tri\u1ec3n khai.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u1ecdn <strong>SFP MMF<\/strong> cho c\u00e1c m\u00f4i tr\u01b0\u1eddng ng\u1eafn, m\u1eadt \u0111\u1ed9 cao v\u00e0 nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed<\/p><\/li>\n\n\n\n<li><p>Ch\u1ecdn <strong>SFP SMF<\/strong> cho c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd34 C\u00e1ch x\u00e1c \u0111\u1ecbnh m\u1ed9t m\u00f4-\u0111un SFP c\u00f3 ph\u1ea3i l\u00e0 \u0111a mode hay kh\u00f4ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng th\u1ef1c t\u1ebf, m\u1ed9t trong nh\u1eefng th\u00e1ch th\u1ee9c ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh xem m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">m\u00f4-\u0111un SFP<\/a> m\u00f4-\u0111un c\u00f3 ph\u1ea3i l\u00e0 \u0111a mode (MMF) hay \u0111\u01a1n mode (SMF)\u2014\u0111\u1eb7c bi\u1ec7t khi c\u00e1c m\u00f4-\u0111un \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t ho\u1eb7c h\u00e0ng t\u1ed3n kho ch\u01b0a d\u00e1n nh\u00e3n b\u1ecb tr\u1ed9n l\u1eabn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n th\u01b0\u1eddng c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ed9t m\u00f4-\u0111un SFP \u0111a mode b\u1eb1ng c\u00e1ch ki\u1ec3m tra b\u01b0\u1edbc s\u00f3ng c\u1ee7a n\u00f3 (850 nm), nh\u00e3n ghi tr\u00ean m\u00f4-\u0111un (SR\/SX), lo\u1ea1i \u0111\u1ea7u n\u1ed1i (LC duplex) v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1p quang (OM1\u2013OM4).<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/993255af9a79457a8c3d8867a1f42f10.jpg\" alt=\"How to Tell If an SFP Is Multimode\" class=\"wp-image-2860\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/993255af9a79457a8c3d8867a1f42f10.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/993255af9a79457a8c3d8867a1f42f10-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/993255af9a79457a8c3d8867a1f42f10-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/993255af9a79457a8c3d8867a1f42f10-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/993255af9a79457a8c3d8867a1f42f10-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1ng tin c\u1eady nh\u1ea5t, \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng trong th\u1ef1c t\u1ebf \u0111\u1ec3 x\u00e1c nh\u1eadn \u0111i\u1ec1u n\u00e0y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra nh\u00e3n b\u01b0\u1edbc s\u00f3ng (ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1ng tin c\u1eady nh\u1ea5t)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u01b0\u01a1ng ph\u00e1p nhanh nh\u1ea5t v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t l\u00e0 <strong>nh\u00e3n b\u01b0\u1edbc s\u00f3ng in tr\u00ean m\u00f4-\u0111un.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 214px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>B\u01b0\u1edbc s\u00f3ng \u0111i\u1ec3n h\u00ecnh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u00dd ngh\u0129a<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p>SFP MMF<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>850 nm<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Direct Attach Copper (DAC)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"214\"><p>SFP SMF<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310 nm \/ 1550 nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>What Does SFP Stand For?<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quy t\u1eafc quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>850 nm = \u0110a mode (MMF)<\/p><\/li>\n\n\n\n<li><p>B\u01b0\u1edbc s\u00f3ng cao h\u01a1n (1310\/1550 nm) = \u0110\u01a1n mode (SMF)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 ch\u1ec9 b\u00e1o k\u1ef9 thu\u1eadt \u0111\u00e1ng tin c\u1eady nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng th\u1ed1ng nh\u1ea5t tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Xem nh\u00e3n ghi tr\u00ean m\u00f4-\u0111un (t\u00ean g\u1ecdi SR so v\u1edbi LR)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ea7u h\u1ebft c\u00e1c m\u00f4-\u0111un SFP tu\u00e2n theo quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean IEEE, ph\u1ea3n \u00e1nh tr\u1ef1c ti\u1ebfp lo\u1ea1i c\u00e1p quang.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 200px;\"\/><col style=\"width: 249px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"200\"><p>Ti\u00eau chu\u1ea9n<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"249\"><p>\u00dd ngh\u0129a<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"200\"><p><strong>SX \/ SR<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"249\"><p>Ph\u1ea1m vi ng\u1eafn<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110a mode (MMF)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"200\"><p><strong>LX \/ LR<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"249\"><p>Ph\u1ea1m vi d\u00e0i<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01a1n mode (SMF)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ed d\u1ee5:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u00e1c h\u1ea1n ch\u1ebf m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c xem x\u00e9t n\u1ebfu s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba<\/strong> \u2192 MMF (\u0111a mode)<\/p><\/li>\n\n\n\n<li><p><strong>10GBASE-SR<\/strong> \u2192 MMF (\u0111a mode)<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/475753.htm\" target=\"_self\"><strong>10GBASE-LR<\/strong><\/a> \u2192 SMF (\u0111\u01a1n mode)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u00f4ng tin th\u1ef1c ti\u1ec5n: <\/strong>N\u1ebfu b\u1ea1n th\u1ea5y k\u00fd hi\u1ec7u \u201cSR\u201d ho\u1eb7c \u201cSX\u201d, th\u00ec g\u1ea7n nh\u01b0 ch\u1eafc ch\u1eafn \u0111\u00f3 l\u00e0 m\u00f4-\u0111un \u0111a mode.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra lo\u1ea1i \u0111\u1ea7u n\u1ed1i (d\u1ea5u hi\u1ec7u v\u1eadt l\u00fd)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ea7u h\u1ebft c\u00e1c m\u00f4-\u0111un SFP MMF s\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i LC song c\u00f4ng, ngh\u0129a l\u00e0 hai c\u1ed5ng s\u1ee3i quang \u0111\u1eb7t c\u1ea1nh nhau.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t s\u1ee3i = TX (truy\u1ec1n)<\/p><\/li>\n\n\n\n<li><p>M\u1ed9t s\u1ee3i = RX (nh\u1eadn)<\/p><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 160px;\"\/><col style=\"width: 266px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"160\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"266\"><p>SFP MMF<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>SFP SMF<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"160\"><p>\u0110\u1ea7u n\u1ed1i<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"266\"><p>LC song c\u00f4ng (ph\u1ed5 bi\u1ebfn nh\u1ea5t)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LC song c\u00f4ng ho\u1eb7c \u0111\u01a1n c\u00f4ng (<a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-27039-1g-bidi-sfp.htm\">BiDi<br> <\/a>c\u00e1c bi\u1ebfn th\u1ec3)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"160\"><p>S\u1ed1 l\u01b0\u1ee3ng s\u1ee3i quang<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"266\"><p>2 s\u1ee3i<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1 ho\u1eb7c 2 s\u1ee3i (t\u00f9y lo\u1ea1i)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ghi ch\u00fa quan tr\u1ecdng: <\/strong>Lo\u1ea1i \u0111\u1ea7u n\u1ed1i ri\u00eang l\u1ebb KH\u00d4NG ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh\u2014nh\u01b0ng l\u00e0 m\u1ed9t d\u1ea5u hi\u1ec7u h\u1ed7 tr\u1ee3 m\u1ea1nh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch s\u1ee3i quang (ti\u00eau chu\u1ea9n OM)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP \u0111a ch\u1ebf \u0111\u1ed9 lu\u00f4n \u0111\u01b0\u1ee3c gh\u00e9p v\u1edbi c\u00e1c lo\u1ea1i s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ph\u00e2n l\u1edbp<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><p>The table below provides a clear comparison of supported MMF types and their typical reach:<\/p><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110a ch\u1ebf \u0111\u1ed9 c\u0169<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><p>Up to 275 m (900 ft)<\/p><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110a ch\u1ebf \u0111\u1ed9 c\u1ea3i ti\u1ebfn<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><p>Up to 550 m (1,800 ft)<\/p><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u01b0u cho 10G<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>OM4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Hi\u1ec7u n\u0103ng cao cho 10G\/25G<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quy t\u1eafc: <\/strong>N\u1ebfu t\u00e0i li\u1ec7u m\u00f4-\u0111un \u0111\u1ec1 c\u1eadp \u0111\u1ebfn <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/fiber-optic-cable-om3-vs-om4\/\">OM3 ho\u1eb7c OM4<\/a>, \u0111\u00e2y l\u00e0 MMF.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra s\u1ed1 hi\u1ec7u m\u00f4-\u0111un (d\u1ea5u hi\u1ec7u theo nh\u00e0 s\u1ea3n xu\u1ea5t)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t t\u00edch h\u1ee3p lo\u1ea1i s\u1ee3i quang v\u00e0o m\u00e3 linh ki\u1ec7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u1eabu th\u00f4ng th\u01b0\u1eddng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u201c<strong>-SR<\/strong>\u201d \u2192 MMF (t\u1ea7m ng\u1eafn)<\/p><\/li>\n\n\n\n<li><p>\u201c<strong>-SX<\/strong>\u201d \u2192 MMF (<a href=\"https:\/\/www.l-p.com\/products\/482145.htm\" target=\"_self\">\u0111a ch\u1ebf \u0111\u1ed9 1G<\/a>)<\/p><\/li>\n\n\n\n<li><p>\u201c<strong>-LR<\/strong>\u201d \u2192 SMF (t\u1ea7m xa)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ed d\u1ee5:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/476064.htm\" target=\"_self\">SFP-10G-SR<br> <\/a>\u2192 \u0110a ch\u1ebf \u0111\u1ed9<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/475767.htm\" target=\"_self\">SFP-10G-LR<\/a> \u2192 \u0110\u01a1n ch\u1ebf \u0111\u1ed9<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Danh s\u00e1ch ki\u1ec3m tra nhanh th\u1ef1c t\u1ebf (ph\u01b0\u01a1ng ph\u00e1p t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi kh\u00f4ng c\u00f3 t\u00e0i li\u1ec7u, h\u00e3y d\u00f9ng danh s\u00e1ch ki\u1ec3m tra nhanh trong 5 gi\u00e2y n\u00e0y:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714 Nh\u00e3n ghi 850 nm \u2192 MMF<br>\u2714 T\u00ean ch\u1ee9a SR ho\u1eb7c SX \u2192 MMF<br>\u2714 S\u1eed d\u1ee5ng s\u1ee3i quang OM3\/OM4 \u2192 MMF<br>\u2714 \u1ee8ng d\u1ee5ng kho\u1ea3ng c\u00e1ch ng\u1eafn (\u2264300 m) \u2192 th\u01b0\u1eddng l\u00e0 MMF<br>\u2714 \u0110\u1ea7u n\u1ed1i LC song c\u00f4ng v\u1edbi hai s\u1ee3i \u2192 th\u01b0\u1eddng l\u00e0 MMF<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m ph\u1ed5 bi\u1ebfn (t\u1eeb tri\u1ec3n khai th\u1ef1c t\u1ebf)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p do k\u1ef9 s\u01b0 b\u00e1o c\u00e1o l\u00e0:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201cV\u1eabn c\u1eafm v\u1eeba, nh\u01b0ng kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i.\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra khi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00f4-\u0111un SFP MMF \u0111\u01b0\u1ee3c d\u00f9ng v\u1edbi s\u1ee3i quang SMF (ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i)<\/p><\/li>\n\n\n\n<li><p>S\u1ef1 kh\u00f4ng kh\u1edbp b\u01b0\u1edbc s\u00f3ng ng\u0103n ch\u1eb7n vi\u1ec7c truy\u1ec1n t\u00edn hi\u1ec7u<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eafc nh\u1edf quan tr\u1ecdng: <\/strong>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1ec1 m\u1eb7t v\u1eadt l\u00fd KH\u00d4NG \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch quang h\u1ecdc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh nhanh m\u00f4-\u0111un SFP \u0111a ch\u1ebf \u0111\u1ed9, h\u00e3y t\u1eadp trung v\u00e0o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>B\u01b0\u1edbc s\u00f3ng 850 nm (d\u1ea5u hi\u1ec7u \u0111\u00e1ng tin c\u1eady nh\u1ea5t)<\/strong><\/p><\/li>\n\n\n\n<li><p><strong>Quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean SR\/SX<\/strong><\/p><\/li>\n\n\n\n<li><p><strong>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi s\u1ee3i quang OM3\/OM4<\/strong><\/p><\/li>\n\n\n\n<li><p><strong>M\u1ee5c \u0111\u00edch thi\u1ebft k\u1ebf t\u1ea7m ng\u1eafn<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f9ng nhau, nh\u1eefng d\u1ea5u hi\u1ec7u n\u00e0y gi\u00fap b\u1ea1n ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng c\u00e1c m\u00f4-\u0111un SFP MMF ch\u1ec9 trong v\u00e0i gi\u00e2y\u2014ngay c\u1ea3 trong m\u00f4i tr\u01b0\u1eddng h\u1ed7n h\u1ee3p ho\u1eb7c kh\u00f4ng c\u00f3 t\u00e0i li\u1ec7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd34 B\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng SFP \u0111\u01a1n ch\u1ebf \u0111\u1ed9 v\u1edbi s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 kh\u00f4ng?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, b\u1ea1n KH\u00d4NG th\u1ec3 s\u1eed d\u1ee5ng \u0111\u00e1ng tin c\u1eady <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477673.htm\">ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i<\/a> (SFP SMF) v\u1edbi s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (MMF). Ngay c\u1ea3 khi c\u1eafm v\u1eeba v\u1ec1 m\u1eb7t v\u1eadt l\u00fd, k\u1ebft n\u1ed1i th\u01b0\u1eddng th\u1ea5t b\u1ea1i ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng r\u1ea5t k\u00e9m do kh\u00f4ng t\u01b0\u01a1ng th\u00edch quang h\u1ecdc.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3f50151b1dc947c39a6672c7fe3cd8d0.jpg\" alt=\"Can You Use Single-Mode SFP with Multimode Fiber?\" class=\"wp-image-2861\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3f50151b1dc947c39a6672c7fe3cd8d0.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3f50151b1dc947c39a6672c7fe3cd8d0-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3f50151b1dc947c39a6672c7fe3cd8d0-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3f50151b1dc947c39a6672c7fe3cd8d0-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/3f50151b1dc947c39a6672c7fe3cd8d0-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ec sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng sai l\u1ea7m th\u1ef1c t\u1ebf ph\u1ed5 bi\u1ebfn nh\u1ea5t trong tri\u1ec3n khai c\u00e1p quang. Nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng cho r\u1eb1ng v\u00ec \u0111\u1ea7u n\u1ed1i v\u1eeba kh\u00edt (th\u01b0\u1eddng l\u00e0 LC), n\u00ean c\u00e1c m\u00f4-\u0111un v\u00e0 c\u00e1p quang c\u00f3 th\u1ec3 ho\u00e1n \u0111\u1ed5i cho nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u1ef1c t\u1ebf kh\u00f4ng ph\u1ea3i v\u1eady.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01a1n ch\u1ebf \u0111\u1ed9 v\u00e0 \u0111a ch\u1ebf \u0111\u1ed9 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u1ef1a tr\u00ean c\u00e1c nguy\u00ean l\u00fd quang h\u1ecdc c\u01a1 b\u1ea3n kh\u00e1c nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ec sao th\u01b0\u1eddng th\u1ea5t b\u1ea1i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 ba l\u00fd do k\u1ef9 thu\u1eadt ch\u00ednh:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Kh\u00f4ng kh\u1edbp gi\u1eefa ngu\u1ed3n s\u00e1ng v\u00e0 l\u00f5i s\u1ee3i quang<\/h4>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 199px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"199\"><p>Lo\u1ea1i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>K\u00edch th\u01b0\u1edbc l\u00f5i s\u1ee3i quang<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>H\u00e0nh vi c\u1ee7a \u00e1nh s\u00e1ng<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"199\"><p>SFP SMF<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~9 \u00b5m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ch\u00f9m tia s\u00e1ng \u0111\u01a1n, t\u1eadp trung<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"199\"><p>MMF<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>50\u201362,5 \u00b5m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nhi\u1ec1u \u0111\u01b0\u1eddng \u0111i c\u1ee7a \u00e1nh s\u00e1ng<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Laser \u0111\u01a1n ch\u1ebf \u0111\u1ed9 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 truy\u1ec1n qua l\u00f5i r\u1ea5t nh\u1ecf<\/p><\/li>\n\n\n\n<li><p>S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 c\u00f3 l\u00f5i l\u1edbn h\u01a1n nhi\u1ec1u v\u1edbi nhi\u1ec1u \u0111\u01b0\u1eddng ph\u1ea3n x\u1ea1<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec1u n\u00e0y g\u00e2y ra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00e1n s\u1eafc t\u00edn hi\u1ec7u<\/p><\/li>\n\n\n\n<li><p>M\u1ea5t c\u00f4ng su\u1ea5t<\/p><\/li>\n\n\n\n<li><p>Truy\u1ec1n d\u1eabn kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1ec1 b\u01b0\u1edbc s\u00f3ng<\/h4>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 334px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"334\"><p>Lo\u1ea1i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>B\u01b0\u1edbc s\u00f3ng \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"334\"><p>SFP SMF<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310 nm \/ 1550 nm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"334\"><p>SFP MMF<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>850 nm<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1:<\/strong><br>S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho \u00e1nh s\u00e1ng b\u01b0\u1edbc s\u00f3ng 850 nm, trong khi thi\u1ebft b\u1ecb quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng \u1edf b\u01b0\u1edbc s\u00f3ng d\u00e0i h\u01a1n nhi\u1ec1u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u00c1nh s\u00e1ng kh\u00f4ng \u0111\u01b0\u1ee3c d\u1eabn hi\u1ec7u qu\u1ea3 qua s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9<\/p><\/li>\n\n\n\n<li><p>X\u1ea3y ra suy hao \u0111\u00e1ng k\u1ec3<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">T\u00e1n s\u1eafc ch\u1ebf \u0111\u1ed9 v\u00e0 m\u1ea5t t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 cho ph\u00e9p nhi\u1ec1u \u0111\u01b0\u1eddng \u0111i c\u1ee7a \u00e1nh s\u00e1ng (ch\u1ebf \u0111\u1ed9), v\u1ed1n \u0111\u00e3 g\u00e2y ra t\u00e1n s\u1eafc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi t\u00edn hi\u1ec7u \u0111\u01a1n ch\u1ebf \u0111\u1ed9 \u0111\u01b0\u1ee3c ti\u00eam v\u00e0o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>N\u00f3 lan r\u1ed9ng kh\u00f4ng \u0111\u1ec1u tr\u00ean nhi\u1ec1u ch\u1ebf \u0111\u1ed9<\/p><\/li>\n\n\n\n<li><p>G\u00e2y m\u00e9o th\u1eddi gian<\/p><\/li>\n\n\n\n<li><p>D\u1eabn \u0111\u1ebfn t\u1ef7 l\u1ec7 l\u1ed7i bit cao ho\u1eb7c ho\u00e0n to\u00e0n m\u1ea5t k\u1ebft n\u1ed1i<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Khi n\u00f3 \u201cc\u00f3 v\u1ebb\u201d ho\u1ea1t \u0111\u1ed9ng (nh\u01b0ng v\u1eabn kh\u00f4ng \u0111\u00fang)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p hi\u1ebfm, ng\u01b0\u1eddi d\u00f9ng b\u00e1o c\u00e1o k\u1ebft n\u1ed1i t\u1ea1m th\u1eddi ho\u1eb7c kh\u00f4ng \u1ed5n \u0111\u1ecbnh khi k\u1ebft h\u1ee3p m\u00f4-\u0111un SFP \u0111\u01a1n ch\u1ebf \u0111\u1ed9 v\u1edbi s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra khi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng kho\u1ea3ng c\u00e1ch c\u00e1p r\u1ea5t ng\u1eafn<\/p><\/li>\n\n\n\n<li><p>Li\u00ean k\u1ebft t\u1ed1c \u0111\u1ed9 th\u1ea5p (1G) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng<\/p><\/li>\n\n\n\n<li><p>C\u00f3 s\u1eb5n s\u1ee3i quang ch\u1ea5t l\u01b0\u1ee3ng cao OM3\/OM4<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean: \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 gi\u1ea3i ph\u00e1p tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n hay \u0111\u00e1ng tin c\u1eady, v\u00e0 tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng n\u00ean s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t c\u1ee7a ng\u00e0nh<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714 S\u1eed d\u1ee5ng m\u00f4-\u0111un SFP \u0111a ch\u1ebf \u0111\u1ed9 (SR\/SX) v\u1edbi s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 (OM1\u2013OM4)<br>\u2714 S\u1eed d\u1ee5ng m\u00f4-\u0111un SFP \u0111\u01a1n ch\u1ebf \u0111\u1ed9 (LR\/ER) v\u1edbi s\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 (OS1\/OS2)<br>\u2714 Kh\u00f4ng bao gi\u1edd tr\u1ed9n lo\u1ea1i s\u1ee3i quang tr\u1eeb khi s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb chuy\u1ec3n \u0111\u1ed5i chuy\u00ean d\u1ee5ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477687.htm\">m\u00f4-\u0111un SFP \u0111\u01a1n ch\u1ebf \u0111\u1ed9<\/a> c\u00f3 th\u1ec3 v\u1eeba kh\u00edt v\u1eadt l\u00fd v\u00e0o h\u1ec7 th\u1ed1ng \u0111a ch\u1ebf \u0111\u1ed9, nh\u01b0ng v\u1ec1 m\u1eb7t quang h\u1ecdc ch\u00fang kh\u00f4ng t\u01b0\u01a1ng th\u00edch trong thi\u1ebft k\u1ebf m\u1ea1ng ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quy t\u1eafc r\u1ea5t \u0111\u01a1n gi\u1ea3n:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>SFP \u0111\u01a1n ch\u1ebf \u0111\u1ed9 \u2192 ch\u1ec9 d\u00f9ng v\u1edbi s\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9<\/strong><br><strong>SFP \u0111a ch\u1ebf \u0111\u1ed9 \u2192 ch\u1ec9 d\u00f9ng v\u1edbi s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tr\u1ed9n ch\u00fang v\u1edbi nhau d\u1eabn \u0111\u1ebfn m\u1ea5t t\u00edn hi\u1ec7u, m\u1ea5t \u1ed5n \u0111\u1ecbnh ho\u1eb7c ho\u00e0n to\u00e0n kh\u00f4ng k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd34 C\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch SFP MMF ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c tri\u1ec3n khai m\u1ea1ng th\u1ef1c t\u1ebf, c\u00e1c module SFP MMF th\u01b0\u1eddng \u0111\u00e1ng tin c\u1eady\u2014nh\u01b0ng ph\u1ea7n l\u1edbn s\u1ef1 c\u1ed1 kh\u00f4ng ph\u1ea3i do l\u1ed7i ph\u1ea7n c\u1ee9ng. Thay v\u00e0o \u0111\u00f3, ch\u00fang xu\u1ea5t ph\u00e1t t\u1eeb s\u1ef1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1p quang, b\u1ed9 thu ph\u00e1t, ti\u00eau chu\u1ea9n t\u1ed1c \u0111\u1ed9 v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea7n l\u1edbn s\u1ef1 c\u1ed1 SFP MMF l\u00e0 do gh\u00e9p sai lo\u1ea1i c\u00e1p quang, v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch, kh\u00f4ng kh\u1edbp t\u1ed1c \u0111\u1ed9 ho\u1eb7c kh\u00f4ng t\u01b0\u01a1ng th\u00edch do m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p\u2014ch\u1ee9 kh\u00f4ng ph\u1ea3i do ch\u00ednh module.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f0780c651f44aa6a35790e130d3e682.jpg\" alt=\"Common MMF SFP Compatibility Problems and Fixes\" class=\"wp-image-2862\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f0780c651f44aa6a35790e130d3e682.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f0780c651f44aa6a35790e130d3e682-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f0780c651f44aa6a35790e130d3e682-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f0780c651f44aa6a35790e130d3e682-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0f0780c651f44aa6a35790e130d3e682-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Gh\u00e9p sai c\u00e1p quang (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/smf-optical-transceiver-vs-mmf-optical-transceiver-guide\/\">MMF so v\u1edbi SMF<\/a> Kh\u00f4ng kh\u1edbp)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u274c V\u1ea5n \u0111\u1ec1<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng l\u1ed7i tri\u1ec3n khai ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 vi\u1ec7c tr\u1ed9n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SFP MMF v\u1edbi c\u00e1p quang \u0111\u01a1n mode<\/p><\/li>\n\n\n\n<li><p>SFP SMF v\u1edbi c\u00e1p quang \u0111a mode<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng c\u00f3 \u0111\u00e8n b\u00e1o li\u00ean k\u1ebft<\/p><\/li>\n\n\n\n<li><p>Kh\u00f4ng ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c t\u00edn hi\u1ec7u<\/p><\/li>\n\n\n\n<li><p>T\u1ef7 l\u1ec7 l\u1ed7i cao ho\u1eb7c k\u1ebft n\u1ed1i kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd27 C\u00e1ch kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o SFP MMF (850 nm) \u0111\u01b0\u1ee3c gh\u00e9p v\u1edbi c\u00e1p quang \u0111a mode OM1\u2013OM4<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea3m b\u1ea3o \u0111\u1ea7u n\u1ed1i c\u00e1p quang kh\u1edbp nhau (th\u01b0\u1eddng l\u00e0 LC duplex cho MMF)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Quy t\u1eafc: <strong>MMF lu\u00f4n ch\u1ec9 d\u00f9ng cho c\u00e1p quang \u0111a mode<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u274c V\u1ea5n \u0111\u1ec1<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP MMF \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ch\u1ec9 \u0111\u1ec3 truy\u1ec1n d\u1eabn c\u1ef1 ly ng\u1eafn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u1edbi h\u1ea1n \u0111i\u1ec3n h\u00ecnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/482292.htm\" target=\"_self\">SX 1G<br><\/a>: t\u1ed1i \u0111a ~550 m<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/www.l-p.com\/products\/476073.htm\" target=\"_self\">10G SR<\/a>: ~300 m (OM3), ~400 m (OM4)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea5t k\u1ebft n\u1ed1i ng\u1eaft qu\u00e3ng<\/p><\/li>\n\n\n\n<li><p>M\u1ea5t g\u00f3i d\u01b0\u1edbi t\u1ea3i<\/p><\/li>\n\n\n\n<li><p>K\u1ebft n\u1ed1i m\u1ea5t \u1ed5n \u0111\u1ecbnh theo th\u1eddi gian<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd27 C\u00e1ch kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u1ea3m chi\u1ec1u d\u00e0i c\u00e1p quang<\/p><\/li>\n\n\n\n<li><p>N\u00e2ng c\u1ea5p l\u00ean c\u00e1p quang ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n (OM3 \u2192 OM4 \u0111\u1ec3 hi\u1ec7u n\u0103ng t\u1ed1t h\u01a1n)<\/p><\/li>\n\n\n\n<li><p>Chuy\u1ec3n sang SFP \u0111\u01a1n mode (LR) cho kho\u1ea3ng c\u00e1ch xa<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u00f4ng kh\u1edbp t\u1ed1c \u0111\u1ed9 v\u00e0 ti\u00eau chu\u1ea9n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u274c V\u1ea5n \u0111\u1ec1<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c module SFP \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng \u1edf c\u00f9ng t\u1ed1c \u0111\u1ed9 Ethernet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>1G SX kh\u00f4ng th\u1ec3 giao ti\u1ebfp v\u1edbi 10G SR<\/p><\/li>\n\n\n\n<li><p>10G SR kh\u00f4ng th\u1ec3 t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ed1c \u0111\u1ed9 v\u1edbi c\u1ed5ng 1G (trong h\u1ea7u h\u1ebft tr\u01b0\u1eddng h\u1ee3p)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i<\/p><\/li>\n\n\n\n<li><p>C\u1ed5ng lu\u00f4n \u1edf tr\u1ea1ng th\u00e1i \u201cdown\u201d<\/p><\/li>\n\n\n\n<li><p>Th\u1ea5t b\u1ea1i trong vi\u1ec7c t\u1ef1 th\u01b0\u01a1ng l\u01b0\u1ee3ng t\u1ed1c \u0111\u1ed9<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd27 C\u00e1ch kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o c\u1ea3 hai \u0111\u1ea7u s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t ti\u00eau chu\u1ea9n t\u1ed1c \u0111\u1ed9:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>1G \u2194 1G<\/p><\/li>\n\n\n\n<li><p>10G \u2194 10G<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p>X\u00e1c minh kh\u1ea3 n\u0103ng c\u1ee7a c\u1ed5ng switch tr\u01b0\u1edbc khi tri\u1ec3n khai<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">V\u1ea5n \u0111\u1ec1 m\u00e3 h\u00f3a nh\u00e0 cung c\u1ea5p \/ kh\u00f3a t\u01b0\u01a1ng th\u00edch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u274c V\u1ea5n \u0111\u1ec1<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u nh\u00e0 cung c\u1ea5p switch (Cisco, HP, Juniper, v.v.) \u00e1p d\u1ee5ng c\u00e1c h\u1ea1n ch\u1ebf m\u00e3 h\u00f3a b\u1ed9 thu ph\u00e1t, ngh\u0129a l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u1ec9 ch\u1ea5p nh\u1eadn c\u00e1c module SFP \u201c\u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t\u201d ho\u1eb7c c\u00f3 m\u00e3 h\u00f3a c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u201cC\u1ea3nh b\u00e1o \u201db\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li>\n\n\n\n<li><p>C\u1ed5ng b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a t\u1ef1 \u0111\u1ed9ng<\/p><\/li>\n\n\n\n<li><p>K\u1ebft n\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t d\u00f9 ph\u1ea7n c\u1ee9ng \u0111\u00fang<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd27 C\u00e1c l\u1ef1a ch\u1ecdn kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714 S\u1eed d\u1ee5ng module \u0111\u01b0\u1ee3c nh\u00e0 cung c\u1ea5p ph\u00ea duy\u1ec7t<br>\u2714 S\u1eed d\u1ee5ng c\u00e1c module SFP b\u00ean th\u1ee9 ba c\u00f3 m\u00e3 h\u00f3a t\u01b0\u01a1ng th\u00edch <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25832-1-2-4g-transceiver-modules.htm\">c\u00e1c module SFP c\u1ee7a b\u00ean th\u1ee9 ba<\/a><br>\u2714 T\u1eaft ki\u1ec3m tra t\u01b0\u01a1ng th\u00edch (tr\u00ean m\u1ed9t s\u1ed1 switch qu\u1ea3n tr\u1ecb \u0111\u01b0\u1ee3c, nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Xu h\u01b0\u1edbng ng\u00e0nh: C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t b\u00ean th\u1ee9 ba hi\u1ec7n \u0111\u1ea1i hi\u1ec7n cung c\u1ea5p c\u00e1c m\u00f4-\u0111un SFP MMF m\u00e3 h\u00f3a \u0111a nh\u00e0 cung c\u1ea5p \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u1ea5n \u0111\u1ec1 ph\u00e2n c\u1ef1c s\u1ee3i quang (ho\u00e1n \u0111\u1ed5i TX\/RX)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u274c V\u1ea5n \u0111\u1ec1<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c k\u1ebft n\u1ed1i \u0111a ch\u1ebf \u0111\u1ed9 y\u00eau c\u1ea7u c\u0103n ch\u1ec9nh s\u1ee3i quang ch\u00ednh x\u00e1c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>TX ph\u1ea3i k\u1ebft n\u1ed1i v\u1edbi RX<\/p><\/li>\n\n\n\n<li><p>RX ph\u1ea3i k\u1ebft n\u1ed1i v\u1edbi TX<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u00e8n li\u00ean k\u1ebft t\u1eaft<\/p><\/li>\n\n\n\n<li><p>M\u1ed9t b\u00ean hi\u1ec3n th\u1ecb ho\u1ea1t \u0111\u1ed9ng, b\u00ean kia th\u00ec kh\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd27 C\u00e1ch kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ho\u00e1n \u0111\u1ed5i hai \u0111\u1ea7u c\u1ee7a c\u1eb7p s\u1ee3i quang (s\u1eeda l\u1ed7i ch\u00e9o \u0111\u01a1n gi\u1ea3n)<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra h\u01b0\u1edbng duplex LC<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">K\u1ebft n\u1ed1i s\u1ee3i quang b\u1ea9n ho\u1eb7c ch\u1ea5t l\u01b0\u1ee3ng k\u00e9m<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u274c V\u1ea5n \u0111\u1ec1<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7u su\u1ea5t SFP MMF r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec5m b\u1ea9n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ee5i<\/p><\/li>\n\n\n\n<li><p>D\u1ea7u<\/p><\/li>\n\n\n\n<li><p>M\u00e0i b\u00f3ng k\u00e9m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u1ed7i ng\u1eaft qu\u00e3ng<\/p><\/li>\n\n\n\n<li><p>T\u1ef7 l\u1ec7 l\u1ed7i CRC cao<\/p><\/li>\n\n\n\n<li><p>Th\u00f4ng l\u01b0\u1ee3ng gi\u1ea3m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd27 C\u00e1ch kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i b\u1eb1ng d\u1ee5ng c\u1ee5 l\u00e0m s\u1ea1ch s\u1ee3i quang<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m tra b\u1eb1ng k\u00ednh soi s\u1ee3i quang (th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t: \u201cKi\u1ec3m tra \u2192 L\u00e0m s\u1ea1ch \u2192 Ki\u1ec3m tra\u201d)<\/p><\/li>\n\n\n\n<li><p>Thay th\u1ebf c\u00e1p n\u1ed1i b\u1ecb h\u01b0 h\u1ecfng<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng \u0111\u1ed3ng th\u1eddi nhi\u1ec1u ti\u00eau chu\u1ea9n quang h\u1ecdc tr\u00ean c\u00f9ng m\u1ed9t k\u1ebft n\u1ed1i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u274c V\u1ea5n \u0111\u1ec1<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng c\u00e1c ti\u00eau chu\u1ea9n quang h\u1ecdc kh\u00e1c nhau \u1edf m\u1ed7i \u0111\u1ea7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SX \u1edf m\u1ed9t \u0111\u1ea7u, SR \u1edf \u0111\u1ea7u kia<\/p><\/li>\n\n\n\n<li><p>B\u01b0\u1edbc s\u00f3ng ho\u1eb7c lo\u1ea1i s\u1ee3i kh\u00e1c nhau<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i<\/p><\/li>\n\n\n\n<li><p>Hi\u1ec7u su\u1ea5t kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c suy gi\u1ea3m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd27 C\u00e1ch kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Lu\u00f4n \u0111\u1ea3m b\u1ea3o kh\u1edbp:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>Ti\u00eau chu\u1ea9n (SX \u2194 SX, SR \u2194 SR)<\/p><\/li>\n\n\n\n<li><p>B\u01b0\u1edbc s\u00f3ng (c\u1ea3 hai b\u00ean \u0111\u1ec1u 850 nm)<\/p><\/li>\n\n\n\n<li><p>Lo\u1ea1i s\u1ee3i (ch\u1ec9 s\u1ee3i \u0111a ch\u1ebf \u0111\u1ed9 \u2013 MMF)<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u1ea7n l\u1edbn c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch SFP MMF kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 c\u1ed1 ph\u1ea7n c\u1ee9ng ph\u1ee9c t\u1ea1p\u2014m\u00e0 l\u00e0 <strong>l\u1ed7i c\u1ea5u h\u00ecnh v\u00e0 sai kh\u1edbp<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2714 \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o tri\u1ec3n khai \u1ed5n \u0111\u1ecbnh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kh\u1edbp m\u00f4-\u0111un SFP MMF ch\u1ec9 v\u1edbi s\u1ee3i quang OM1\u2013OM4<\/p><\/li>\n\n\n\n<li><p>Tu\u00e2n th\u1ee7 gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n v\u1ec1 t\u1ed1c \u0111\u1ed9<\/p><\/li>\n\n\n\n<li><p>X\u00e1c minh kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p<\/p><\/li>\n\n\n\n<li><p>Duy tr\u00ec k\u1ebft n\u1ed1i s\u1ee3i quang s\u1ea1ch s\u1ebd<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd34 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 b\u1ed9 thu ph\u00e1t \u0111a ch\u1ebf \u0111\u1ed9 s\u1ee3i quang 850nm<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/811df89904ed44819cba56b2d629e258.jpg\" alt=\"850nm Fiber Multimode Transceivers FAQ\" class=\"wp-image-2863\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/811df89904ed44819cba56b2d629e258.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/811df89904ed44819cba56b2d629e258-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/811df89904ed44819cba56b2d629e258-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/811df89904ed44819cba56b2d629e258-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/811df89904ed44819cba56b2d629e258-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">C1. M\u00f4-\u0111un SFP MMF \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t <strong>M\u00f4-\u0111un SFP MMF \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u quang \u1edf kho\u1ea3ng c\u00e1ch ng\u1eafn qua s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9<\/strong>, th\u01b0\u1eddng trong m\u00f4i tr\u01b0\u1eddng trung t\u00e2m d\u1eef li\u1ec7u ho\u1eb7c m\u1ea1ng LAN doanh nghi\u1ec7p. N\u00f3 k\u1ebft n\u1ed1i c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch, m\u00e1y ch\u1ee7 v\u00e0 thi\u1ebft b\u1ecb l\u01b0u tr\u1eef tr\u00ean kho\u1ea3ng c\u00e1ch th\u01b0\u1eddng t\u1eeb <strong>100 m\u00e9t \u0111\u1ebfn 550 m\u00e9t<\/strong>, t\u00f9y thu\u1ed9c v\u00e0o ti\u00eau chu\u1ea9n quang h\u1ecdc v\u00e0 c\u1ea5p \u0111\u1ed9 s\u1ee3i quang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C2. \u201c\u0110a ch\u1ebf \u0111\u1ed9\u201d trong m\u00f4-\u0111un SFP ngh\u0129a l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u201c\u0110a ch\u1ebf \u0111\u1ed9\u201d \u0111\u1ec1 c\u1eadp \u0111\u1ebfn lo\u1ea1i s\u1ee3i quang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, trong \u0111\u00f3 <strong>nhi\u1ec1u \u0111\u01b0\u1eddng \u0111i c\u1ee7a \u00e1nh s\u00e1ng (c\u00e1c mode) lan truy\u1ec1n qua l\u00f5i s\u1ee3i l\u1edbn h\u01a1n<\/strong>. Thi\u1ebft k\u1ebf n\u00e0y cho ph\u00e9p truy\u1ec1n d\u1eabn hi\u1ec7u qu\u1ea3 \u1edf kho\u1ea3ng c\u00e1ch ng\u1eafn b\u1eb1ng ngu\u1ed3n s\u00e1ng 850 nm, ph\u00f9 h\u1ee3p cho c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao v\u1edbi kho\u1ea3ng c\u00e1ch ng\u1eafn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q3. Li\u1ec7u m\u00f4-\u0111un SFP MMF c\u00f3 gi\u1ed1ng v\u1edbi 10G SR hay 1000BASE-SX kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3, trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p. <strong>C\u00e1c m\u00f4-\u0111un SFP MMF th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai theo chu\u1ea9n 1000BASE-SX (1G) v\u00e0 10GBASE-SR (10G).<\/strong> C\u00e1c k\u00fd hi\u1ec7u \u201cSR\u201d v\u00e0 \u201cSX\u201d n\u00e0y ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng tr\u00ean s\u1ee3i quang \u0111a mode (multimode) \u1edf kho\u1ea3ng c\u00e1ch ng\u1eafn, s\u1eed d\u1ee5ng quang h\u1ecdc b\u01b0\u1edbc s\u00f3ng 850 nm.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q4. Lo\u1ea1i s\u1ee3i quang n\u00e0o t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c m\u00f4-\u0111un SFP MMF?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP MMF t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c lo\u1ea1i s\u1ee3i quang \u0111a mode nh\u01b0 OM1, OM2, OM3 v\u00e0 OM4. Nh\u1eefng lo\u1ea1i s\u1ee3i n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi \u0111\u01b0\u1eddng k\u00ednh l\u00f5i l\u1edbn h\u01a1n nh\u1eb1m h\u1ed7 tr\u1ee3 nhi\u1ec1u \u0111\u01b0\u1eddng truy\u1ec1n \u00e1nh s\u00e1ng, t\u1ed1i \u01b0u cho truy\u1ec1n d\u1eabn \u1edf kho\u1ea3ng c\u00e1ch ng\u1eafn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q5. Kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn \u0111i\u1ec3n h\u00ecnh c\u1ee7a m\u1ed9t m\u00f4-\u0111un SFP MMF l\u00e0 bao nhi\u00eau?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn ph\u1ee5 thu\u1ed9c v\u00e0o chu\u1ea9n quang h\u1ecdc v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng s\u1ee3i, nh\u01b0ng th\u00f4ng th\u01b0\u1eddng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u00ean \u0111\u1ebfn 550 m\u00e9t \u0111\u1ed1i v\u1edbi t\u1ed1c \u0111\u1ed9 1G (SX)<\/p><\/li>\n\n\n\n<li><p>Kho\u1ea3ng 300 m\u00e9t \u0111\u1ed1i v\u1edbi t\u1ed1c \u0111\u1ed9 10G (SR) tr\u00ean s\u1ee3i OM3<\/p><\/li>\n\n\n\n<li><p>L\u00ean \u0111\u1ebfn 400 m\u00e9t tr\u00ean s\u1ee3i OM4<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, c\u00e1c m\u00f4-\u0111un SFP MMF r\u1ea5t ph\u00f9 h\u1ee3p cho k\u1ebft n\u1ed1i trong t\u00f2a nh\u00e0 ho\u1eb7c t\u1eeb k\u1ec7 n\u00e0y sang k\u1ec7 kh\u00e1c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q6. C\u00e1c m\u00f4-\u0111un SFP MMF c\u00f3 h\u1ed7 tr\u1ee3 truy\u1ec1n d\u1eabn kho\u1ea3ng c\u00e1ch xa kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng. C\u00e1c m\u00f4-\u0111un SFP MMF ch\u1ec9 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho \u1ee9ng d\u1ee5ng kho\u1ea3ng c\u00e1ch ng\u1eafn. \u0110\u1ed1i v\u1edbi c\u00e1c li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch xa v\u01b0\u1ee3t qu\u00e1 v\u00e0i tr\u0103m m\u00e9t, c\u1ea7n s\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un SFP \u0111\u01a1n mode (v\u00ed d\u1ee5: lo\u1ea1i LR ho\u1eb7c ER) do ch\u00fang c\u00f3 \u0111\u1ed9 t\u00e1n s\u1eafc t\u00edn hi\u1ec7u th\u1ea5p h\u01a1n v\u00e0 hi\u1ec7u su\u1ea5t quang h\u1ecdc cao h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q7. C\u00e1c m\u00f4-\u0111un SFP MMF c\u00f3 th\u1ec3 thay th\u1ebf l\u1eabn nhau gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng v\u1eady. M\u1eb7c d\u00f9 c\u00e1c chu\u1ea9n quang h\u1ecdc l\u00e0 ph\u1ed5 qu\u00e1t, m\u1ed9t s\u1ed1 switch \u00e1p d\u1ee5ng h\u1ea1n ch\u1ebf m\u00e3 h\u00f3a theo nh\u00e0 s\u1ea3n xu\u1ea5t, c\u00f3 th\u1ec3 y\u00eau c\u1ea7u s\u1eed d\u1ee5ng m\u00f4-\u0111un t\u01b0\u01a1ng th\u00edch ho\u1eb7c \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn. Tuy nhi\u00ean, hi\u1ec7n nay nhi\u1ec1u m\u00f4-\u0111un SFP MMF c\u1ee7a b\u00ean th\u1ee9 ba \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi m\u00e3 h\u00f3a t\u01b0\u01a1ng th\u00edch \u0111a nh\u00e0 cung c\u1ea5p nh\u1eb1m h\u1ed7 tr\u1ee3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c r\u1ed9ng h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd34 C\u00e1ch ch\u1ecdn m\u00f4-\u0111un SFP MMF ph\u00f9 h\u1ee3p cho m\u1ea1ng c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang m\u00f4-\u0111un SFP MMF kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 ch\u1ecdn m\u1ed9t b\u1ed9 thu ph\u00e1t t\u01b0\u01a1ng th\u00edch\u2014m\u00e0 c\u00f2n l\u00e0 \u0111\u1ea3m b\u1ea3o <strong>hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u, hi\u1ec7u qu\u1ea3 chi ph\u00ed v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i c\u1ee7a m\u1ea1ng<\/strong>. Vi\u1ec7c l\u1ef1a ch\u1ecdn sai c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn suy hao t\u00edn hi\u1ec7u, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng b\u1ecb gi\u1edbi h\u1ea1n ho\u1eb7c chi ph\u00ed thay th\u1ebf kh\u00f4ng c\u1ea7n thi\u1ebft.<br>H\u00e3y ch\u1ecdn m\u00f4-\u0111un SFP MMF d\u1ef1a tr\u00ean kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn, lo\u1ea1i s\u1ee3i (OM1\u2013OM4), kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi switch v\u00e0 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u y\u00eau c\u1ea7u (<a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\">1G\/<\/a><a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">Kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/a>\/<a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\">25G<\/a>) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t m\u1ea1ng t\u1ea7m ng\u1eafn \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ebc3df0a6dc4a09afd139ad488eb2de.jpg\" alt=\"How to Choose the Right MMF SFP Module for Your Network\" class=\"wp-image-2864\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ebc3df0a6dc4a09afd139ad488eb2de.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ebc3df0a6dc4a09afd139ad488eb2de-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ebc3df0a6dc4a09afd139ad488eb2de-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ebc3df0a6dc4a09afd139ad488eb2de-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ebc3df0a6dc4a09afd139ad488eb2de-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">B\u1eaft \u0111\u1ea7u v\u1edbi kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn (Y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kho\u1ea3ng c\u00e1ch l\u00e0 \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t khi ch\u1ecdn module SFP \u0111a mode (MMF).<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 274px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"274\"><p>Y\u00eau c\u1ea7u<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i SFP MMF \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"274\"><p>T\u1ed1i \u0111a 550 m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1G SX (1000BASE-SX)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"274\"><p>L\u00ean \u0111\u1ebfn 300 m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10G SR (s\u1ee3i quang OM3)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"274\"><p>T\u1ed1i \u0111a 400 m<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10G SR (s\u1ee3i quang OM4)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quy t\u1eafc quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Li\u00ean k\u1ebft ng\u1eafn gi\u1eefa c\u00e1c t\u1ee7 rack \u2192 MMF l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng<\/p><\/li>\n\n\n\n<li><p>N\u1ebfu kho\u1ea3ng c\u00e1ch v\u01b0\u1ee3t qu\u00e1 ~500 m \u2192 c\u00e2n nh\u1eafc<strong> module SFP \u0111\u01a1n mode thay th\u1ebf<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Ph\u00f9 h\u1ee3p v\u1edbi lo\u1ea1i s\u1ee3i quang (t\u01b0\u01a1ng th\u00edch OM1\u2013OM4)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP MMF ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n s\u1ee3i quang \u0111a mode t\u01b0\u01a1ng \u1ee9ng.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 185px;\"\/><col style=\"width: 253px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"185\"><p>Lo\u1ea1i s\u1ee3i<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"253\"><p>C\u1ea5p hi\u1ec7u n\u0103ng<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>K\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"185\"><p><p>The table below provides a clear comparison of supported MMF types and their typical reach:<\/p><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"253\"><p>\u0110\u00e3 l\u1ed7i th\u1eddi<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ec7 th\u1ed1ng t\u1ed1c \u0111\u1ed9 th\u1ea5p\/c\u0169<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"185\"><p><p>Up to 275 m (900 ft)<\/p><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"253\"><p>C\u1ea3i ti\u1ebfn t\u1eeb h\u1ec7 th\u1ed1ng l\u1ed7i th\u1eddi<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ea1ng v\u0103n ph\u00f2ng nh\u1ecf<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"185\"><p><p>Up to 550 m (1,800 ft)<\/p><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"253\"><p>T\u1ed1i \u01b0u cho 10G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"185\"><p>OM4<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"253\"><p>Hi\u1ec7u n\u0103ng cao<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft 10G\/25G m\u1eadt \u0111\u1ed9 cao<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u00f4ng tin th\u1ef1c ti\u1ec5n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>OM3 l\u00e0 ti\u00eau chu\u1ea9n t\u1ed1i thi\u1ec3u \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho tri\u1ec3n khai MMF 10G<\/p><\/li>\n\n\n\n<li><p>OM4 cung c\u1ea5p kh\u1ea3 n\u0103ng n\u00e2ng c\u1ea5p trong t\u01b0\u01a1ng lai t\u1ed1t h\u01a1n v\u00e0 t\u1ea7m xa h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u1ea3m b\u1ea3o t\u01b0\u01a1ng th\u00edch v\u1edbi switch v\u00e0 c\u1ed5ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi ph\u1ea7n quang h\u1ecdc \u0111\u00fang, module v\u1eabn ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng switch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ed1c \u0111\u1ed9 SFP \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 (1G \/ 10G \/ 25G)<\/p><\/li>\n\n\n\n<li><p>T\u01b0\u01a1ng th\u00edch nh\u00e0 cung c\u1ea5p (Cisco, Juniper, HP, v.v.)<\/p><\/li>\n\n\n\n<li><p>Vi\u1ec7c s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb quang h\u1ecdc c\u1ee7a b\u00ean th\u1ee9 ba c\u00f3 \u0111\u01b0\u1ee3c ph\u00e9p hay kh\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn:<\/strong><br>M\u1ed9t s\u1ed1 switch ch\u1eb7n module kh\u00f4ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a v\u00e0 hi\u1ec3n th\u1ecb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u201cC\u1ea3nh b\u00e1o \u201db\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li>\n\n\n\n<li><p>Tr\u1ea1ng th\u00e1i c\u1ed5ng b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ecdn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u ph\u00f9 h\u1ee3p (kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP MMF c\u00f3 s\u1eb5n \u1edf nhi\u1ec1u t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 247px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"247\"><p>T\u1ed1c \u0111\u1ed9<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i m\u00f4-\u0111un \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"247\"><p>1G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>SX<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"247\"><p>Kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>SR<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"247\"><p>25G<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>SR \/ SR4<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Khuy\u1ebfn ngh\u1ecb:<br><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Tri\u1ec3n khai m\u1edbi \u2192 \u01b0u ti\u00ean 10G ho\u1eb7c cao h\u01a1n<\/p><\/li>\n\n\n\n<li><p>H\u1ec7 th\u1ed1ng c\u0169 \u2192 1G SX v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e2n b\u1eb1ng chi ph\u00ed v\u00e0 hi\u1ec7u n\u0103ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module SFP MMF th\u01b0\u1eddng ti\u1ebft ki\u1ec7m chi ph\u00ed cho li\u00ean k\u1ebft t\u1ea7m ng\u1eafn, nh\u01b0ng t\u1ed5ng chi ph\u00ed ph\u1ee5 thu\u1ed9c v\u00e0o quy m\u00f4 tri\u1ec3n khai.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 271px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"271\"><p>Y\u1ebfu t\u1ed1<br><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>C\u00e2n nh\u1eafc<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"271\"><p>Chi ph\u00ed m\u00f4-\u0111un<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chi ph\u00ed MMF th\u1ea5p h\u01a1n SMF<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"271\"><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00f3 th\u1ec3 c\u1ea7n nhi\u1ec1u l\u00f5i h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"271\"><p>B\u1ea3o tr\u00ec<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ec5 ch\u1ea9n \u0111o\u00e1n s\u1ef1 c\u1ed1 h\u01a1n cho li\u00ean k\u1ebft t\u1ea7m ng\u1eafn<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Insight: <\/strong>MMF mang l\u1ea1i hi\u1ec7u qu\u1ea3 chi ph\u00ed cao nh\u1ea5t khi kho\u1ea3ng c\u00e1ch ng\u1eafn v\u00e0 m\u1eadt \u0111\u1ed9 cao (v\u00ed d\u1ee5: trung t\u00e2m d\u1eef li\u1ec7u).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Danh s\u00e1ch ki\u1ec3m tra th\u1ef1c t\u1ebf khi ch\u1ecdn SFP MMF<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi mua, h\u00e3y x\u00e1c nh\u1eadn:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714 Kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn y\u00eau c\u1ea7u (&lt;550 m)<br>\u2714 Lo\u1ea1i s\u1ee3i quang (OM3 ho\u1eb7c OM4 \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho 10G+)<br>\u2714 T\u1ed1c \u0111\u1ed9 t\u01b0\u01a1ng th\u00edch (1G \/ 10G \/ 25G)<br>\u2714 T\u01b0\u01a1ng th\u00edch v\u1edbi switch (c\u00f3 m\u00e3 h\u00f3a theo nh\u00e0 cung c\u1ea5p ho\u1eb7c \u0111a nh\u00e0 cung c\u1ea5p)<br>\u2714 Lo\u1ea1i \u0111\u1ea7u n\u1ed1i (chu\u1ea9n LC duplex)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Module SFP MMF ph\u00f9 h\u1ee3p kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n \u2014 m\u00e0 l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh \u1edf c\u1ea5p \u0111\u1ed9 h\u1ec7 th\u1ed1ng. L\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u c\u00e2n b\u1eb1ng gi\u1eefa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 Y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch<\/p><\/li>\n\n\n\n<li><p>\u2714 Ch\u1ea5t l\u01b0\u1ee3ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang<\/p><\/li>\n\n\n\n<li><p>\u2714 Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi b\u1ed9 chuy\u1ec3n m\u1ea1ch<\/p><\/li>\n\n\n\n<li><p>\u2714 Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Khi t\u1ea5t c\u1ea3 c\u00e1c y\u1ebfu t\u1ed1 \u0111\u1ed3ng b\u1ed9, m\u00f4-\u0111un MMF SFP mang l\u1ea1i gi\u1ea3i ph\u00e1p hi\u1ec7u n\u0103ng cao, \u0111\u1ed9 tr\u1ec5 th\u1ea5p v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed cho m\u1ea1ng quang t\u1ea7m ng\u1eafn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Khuy\u1ebfn ngh\u1ecb cu\u1ed1i c\u00f9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang l\u00ean k\u1ebf ho\u1ea1ch tri\u1ec3n khai m\u1edbi ho\u1eb7c n\u00e2ng c\u1ea5p m\u1ea1ng hi\u1ec7n c\u00f3, h\u00e3y lu\u00f4n ch\u1ecdn m\u00f4-\u0111un MMF SFP ch\u1ea5t l\u01b0\u1ee3ng cao, t\u01b0\u01a1ng th\u00edch \u0111\u1ea7y \u0111\u1ee7<strong>s<\/strong> \u0111\u1ec3 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng t\u00e1c v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 \u0110\u1ec3 c\u00f3 c\u00e1c b\u1ed9 thu ph\u00e1t quang \u0111\u00e1ng tin c\u1eady v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra, h\u00e3y kh\u00e1m ph\u00e1<br><a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a> \u0111\u1ec3 xem to\u00e0n b\u1ed9 danh m\u1ee5c m\u00f4-\u0111un MMF SFP, bao g\u1ed3m c\u00e1c gi\u1ea3i ph\u00e1p 1G, 10G v\u00e0 t\u1ed1c \u0111\u1ed9 cao SR \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh ri\u00eang cho \u1ee9ng d\u1ee5ng doanh nghi\u1ec7p v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u module SFP MMF l\u00e0 g\u00ec, c\u00e1ch n\u00f3 kh\u00e1c v\u1edbi SMF, c\u00e1ch nh\u1eadn di\u1ec7n v\u00e0 c\u00e1ch tr\u00e1nh sai l\u1ea7m t\u01b0\u01a1ng th\u00edch trong tri\u1ec3n khai th\u1ef1c t\u1ebf.<\/p>","protected":false},"author":1,"featured_media":2865,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[14,15,16,26],"class_list":["post-2866","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-10g-sfp-transceivers","tag-link-pp-1g-sfp-modules","tag-link-pp-25g-sfp28-optical-modules","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2866","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=2866"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2866\/revisions"}],"predecessor-version":[{"id":10731,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2866\/revisions\/10731"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2865"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2866"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}