{"id":5280,"date":"2025-09-01T00:00:00","date_gmt":"2025-09-01T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/optical-transceiver-insertion-loss-definition-impact\/"},"modified":"2026-06-22T07:58:23","modified_gmt":"2026-06-22T07:58:23","slug":"optical-transceiver-insertion-loss-definition-impact","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-transceiver-insertion-loss-definition-impact","title":{"rendered":"T\u1ed5n hao ch\u00e8n b\u1ed9 thu ph\u00e1t quang: \u0110\u1ecbnh ngh\u0129a, \u0111o l\u01b0\u1eddng v\u00e0 t\u00e1c \u0111\u1ed9ng"},"content":{"rendered":"<h2 class=\"wp-block-heading\" >\u25b6 Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong truy\u1ec1n th\u00f4ng quang, m\u1ed7i ph\u1ea7n nh\u1ecf c\u1ee7a decibel c\u00f3 th\u1ec3 quy\u1ebft \u0111\u1ecbnh li\u1ec7u m\u1ed9t li\u00ean k\u1ebft ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru hay g\u1eb7p s\u1ef1 c\u1ed1 d\u01b0\u1edbi t\u1ea3i. M\u1ed9t trong nh\u1eefng th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u1ea5t l\u00e0 <strong>t\u1ed5n hao ch\u00e8n (IL)<\/strong> \u2014 l\u01b0\u1ee3ng c\u00f4ng su\u1ea5t quang b\u1ecb m\u1ea5t khi \u00e1nh s\u00e1ng truy\u1ec1n qua m\u1ed9t th\u00e0nh ph\u1ea7n, \u0111\u1ea7u n\u1ed1i ho\u1eb7c \u0111o\u1ea1n c\u00e1p s\u1ee3i quang. K\u1ef9 s\u01b0 coi t\u1ed5n hao ch\u00e8n l\u00e0 ph\u00e9p \u0111o n\u1ec1n t\u1ea3ng khi t\u00ednh to\u00e1n ng\u00e2n s\u00e1ch li\u00ean k\u1ebft, ki\u1ec3m tra l\u1eafp \u0111\u1eb7t s\u1ee3i quang v\u00e0 l\u1ef1a ch\u1ecdn <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">b\u1ed9 thu ph\u00e1t quang<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i vi\u1ebft n\u00e0y gi\u1ea3i th\u00edch t\u1ed5n hao ch\u00e8n l\u00e0 g\u00ec, c\u00e1ch \u0111o l\u01b0\u1eddng n\u00f3, c\u00e1c gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh ra sao v\u00e0 l\u00fd do v\u00ec sao n\u00f3 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi hi\u1ec7u n\u0103ng c\u1ee7a c\u00e1c module quang nh\u01b0 nh\u1eefng s\u1ea3n ph\u1ea9m do <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/page\/aboutus.htm\"><strong>LINK-PP<\/strong><\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/283194d74a2a4ae4857bfb467fb58fca.webp\" alt=\"Optical transceiver insertion loss visualized across LC and MPO connectors in a data center link\" class=\"wp-image-5276\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/283194d74a2a4ae4857bfb467fb58fca.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/283194d74a2a4ae4857bfb467fb58fca-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/283194d74a2a4ae4857bfb467fb58fca-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/283194d74a2a4ae4857bfb467fb58fca-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/283194d74a2a4ae4857bfb467fb58fca-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 \u201cT\u1ed5n hao ch\u00e8n b\u1ed9 thu ph\u00e1t quang\u201d l\u00e0 g\u00ec?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110\u1ecbnh ngh\u0129a b\u1eb1ng ng\u00f4n ng\u1eef \u0111\u01a1n gi\u1ea3n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed5n hao ch\u00e8n l\u00e0 m\u1ee9c gi\u1ea3m c\u00f4ng su\u1ea5t t\u00edn hi\u1ec7u gi\u1eefa \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a m\u1ed9t th\u00e0nh ph\u1ea7n ho\u1eb7c li\u00ean k\u1ebft. N\u00f3 lu\u00f4n \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng <strong>decibel (dB)<\/strong>. T\u1ed5n hao ch\u00e8n th\u1ea5p h\u01a1n ngh\u0129a l\u00e0 nhi\u1ec1u \u00e1nh s\u00e1ng h\u01a1n \u0111\u1ebfn \u0111\u01b0\u1ee3c b\u1ed9 thu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"320\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/222f8c7683aa4833bd4b9e10f9448198.webp\" alt=\"Optical Transceiver Insertion Loss\" class=\"wp-image-5277\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/222f8c7683aa4833bd4b9e10f9448198.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/222f8c7683aa4833bd4b9e10f9448198-300x80.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/222f8c7683aa4833bd4b9e10f9448198-1024x273.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/222f8c7683aa4833bd4b9e10f9448198-768x205.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/222f8c7683aa4833bd4b9e10f9448198-18x5.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong \u0111\u00f3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Pin<\/strong> = c\u00f4ng su\u1ea5t quang \u0111\u1ea7u v\u00e0o<\/p><\/li><li><p><strong>Pout<\/strong> = c\u00f4ng su\u1ea5t quang \u0111\u1ea7u ra<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>N\u1ebfu b\u1ea1n \u0111\u01b0a v\u00e0o \u20132 dBm v\u00e0o s\u1ee3i quang v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c \u20132.5 dBm \u1edf \u0111\u1ea7u xa, th\u00ec t\u1ed5n hao ch\u00e8n l\u00e0 0.5 dB.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u00fd do v\u00ec sao IL quan tr\u1ecdng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec b\u1ed9 thu quang y\u00eau c\u1ea7u m\u1ed9t m\u1ee9c c\u00f4ng su\u1ea5t \u0111\u1ea7u v\u00e0o t\u1ed1i thi\u1ec3u nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang, t\u1ed5n hao ch\u00e8n qu\u00e1 m\u1ee9c s\u1ebd l\u00e0m gi\u1ea3m tr\u1ef1c ti\u1ebfp bi\u00ean d\u1ef1 ph\u00f2ng h\u1ec7 th\u1ed1ng v\u00e0 c\u00f3 th\u1ec3 khi\u1ebfn b\u1ed9 thu r\u01a1i xu\u1ed1ng d\u01b0\u1edbi ng\u01b0\u1ee1ng \u0111\u1ed9 nh\u1ea1y. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn t\u1ef7 l\u1ec7 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-what-is-bit-error-rate\/\">t\u1ef7 l\u1ec7 l\u1ed7i bit (BER)<\/a> ho\u1eb7c th\u1eadm ch\u00ed m\u1ea5t k\u1ebft n\u1ed1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 C\u00e1c nguy\u00ean nh\u00e2n g\u00e2y t\u1ed5n hao ch\u00e8n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed5n hao ch\u00e8n l\u00e0 \u0111i\u1ec1u kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi, nh\u01b0ng c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1edd thi\u1ebft k\u1ebf t\u1ed1t v\u00e0 b\u1ea3o tr\u00ec \u0111\u00fang c\u00e1ch. C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh g\u00e2y ra t\u1ed5n hao bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>T\u1ed5n hao gh\u00e9p n\u1ed1i \u0111\u1ea7u n\u1ed1i<\/strong> \u2014 Khe h\u1edf nh\u1ecf, l\u1ec7ch tr\u1ee5c ho\u1eb7c b\u1ee5i b\u1ea9n gi\u1eefa hai \u0111\u1ea7u n\u1ed1i s\u1ee3i quang l\u00e0m t\u0103ng t\u1ed5n hao.<\/p><\/li><li><p><strong>Su\u1ea5t suy hao s\u1ee3i quang<\/strong> \u2014 Ngay c\u1ea3 s\u1ee3i quang ch\u1ebf \u0111\u1ed9 \u0111\u01a1n ch\u1ea5t l\u01b0\u1ee3ng cao c\u0169ng c\u00f3 suy hao n\u1ed9i t\u1ea1i (v\u00ed d\u1ee5: ~0,35 dB\/km \u1edf b\u01b0\u1edbc s\u00f3ng 1310 nm, ~0,2 dB\/km \u1edf 1550 nm).<\/p><\/li><li><p><strong>T\u1ed5n hao h\u00e0n n\u1ed1i<\/strong> \u2014 C\u00e1c m\u1ed1i n\u1ed1i c\u01a1 h\u1ecdc ho\u1eb7c h\u00e0n n\u00f3ng ch\u1ea3y th\u01b0\u1eddng th\u00eam 0,05\u20130,3 dB.<\/p><\/li><li><p><strong>T\u1ed5n hao do u\u1ed1n cong<\/strong> \u2014 C\u00e1c ch\u1ed7 u\u1ed1n cong s\u1eafc c\u1ea1nh ho\u1eb7c u\u1ed1n cong vi m\u00f4 g\u00e2y r\u00f2 r\u1ec9 t\u00edn hi\u1ec7u.<\/p><\/li><li><p><strong>T\u1ed5n hao n\u1ed9i t\u1ea1i trong module<\/strong> \u2014 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475859.htm\">B\u1ed9 thu ph\u00e1t quang<\/a> c\u00f3 c\u00e1c th\u1ea5u k\u00ednh v\u00e0 giao di\u1ec7n t\u00edch h\u1ee3p l\u00e0m ph\u00e1t sinh c\u00e1c gi\u00e1 tr\u1ecb IL nh\u1ecf.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 C\u00e1ch \u0111o t\u1ed5n hao ch\u00e8n<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ed9 ki\u1ec3m tra t\u1ed5n hao quang (OLTS)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch \u0111o t\u1ed5n hao ch\u00e8n (IL) ch\u00ednh x\u00e1c nh\u1ea5t l\u00e0 s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb OLTS: m\u1ed9t ngu\u1ed3n s\u00e1ng \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n \u1edf m\u1ed9t \u0111\u1ea7u c\u1ee7a \u0111\u01b0\u1eddng d\u00e2y v\u00e0 m\u1ed9t m\u00e1y \u0111o c\u00f4ng su\u1ea5t \u1edf \u0111\u1ea7u kia. \u0110\u00e2y l\u00e0 ti\u00eau chu\u1ea9n <strong>Ki\u1ec3m tra ch\u1ee9ng nh\u1eadn c\u1ea5p 1<\/strong> trong quang h\u1ecdc s\u1ee3i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u01b0\u1edbc:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>N\u1ed1i ngu\u1ed3n v\u00e0 m\u00e1y \u0111o b\u1eb1ng c\u00e1p tham chi\u1ebfu \u0111\u00e3 bi\u1ebft.<\/p><\/li><li><p>\u0110o c\u00f4ng su\u1ea5t tham chi\u1ebfu (Pin).<\/p><\/li><li><p>N\u1ed1i \u0111\u01b0\u1eddng d\u00e2y s\u1ee3i quang c\u1ea7n ki\u1ec3m tra.<\/p><\/li><li><p>\u0110o c\u00f4ng su\u1ea5t \u0111\u1ea7u ra (Pout).<\/p><\/li><li><p>T\u00ednh IL = 10\u00b7log<sub>10<\/sub>(Pin\/Pout).<\/p><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" >OTDR (B\u1ed9 ph\u1ea3n x\u1ea1 k\u1ebf mi\u1ec1n th\u1eddi gian quang h\u1ecdc)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft b\u1ecb OTDR c\u0169ng c\u00f3 th\u1ec3 \u01b0\u1edbc t\u00ednh IL, nh\u01b0ng ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh v\u1ecb s\u1ef1 c\u1ed1. \u0110\u1ed1i v\u1edbi ki\u1ec3m tra nghi\u1ec7m thu, OLTS \u0111\u01b0\u1ee3c \u01b0u ti\u00ean.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1eb9o ki\u1ec3m tra th\u1ef1c \u0111\u1ecba<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Lu\u00f4n l\u00e0m s\u1ea1ch c\u00e1c \u0111\u1ea7u n\u1ed1i tr\u01b0\u1edbc khi ki\u1ec3m tra \u2014 nhi\u1ec5m b\u1ea9n l\u00e0 nguy\u00ean nh\u00e2n h\u00e0ng \u0111\u1ea7u g\u00e2y t\u1ed5n hao v\u01b0\u1ee3t m\u1ee9c.<\/p><\/li><li><p>Ki\u1ec3m tra theo c\u1ea3 hai chi\u1ec1u (A\u2192B v\u00e0 B\u2192A) r\u1ed3i l\u1ea5y trung b\u00ecnh k\u1ebft qu\u1ea3.<\/p><\/li><li><p>S\u1eed d\u1ee5ng c\u00e1p tham chi\u1ebfu ch\u1ea5t l\u01b0\u1ee3ng cao v\u1edbi t\u1ed5n hao ch\u00e8n (IL) th\u1ea5p \u0111\u00e3 bi\u1ebft.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 C\u00e1c gi\u00e1 tr\u1ecb t\u1ed5n hao ch\u00e8n \u0111i\u1ec3n h\u00ecnh<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c gi\u00e1 tr\u1ecb IL \u0111i\u1ec3n h\u00ecnh gi\u00fap k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf ng\u00e2n s\u00e1ch \u0111\u01b0\u1eddng truy\u1ec1n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>M\u1ed9t \u0111\u1ea7u n\u1ed1i:<\/strong> 0,1\u20130,5 dB (\u0111\u00e1nh b\u00f3ng t\u1ed1t v\u00e0 s\u1ea1ch).<\/p><\/li><li><p><strong>N\u1ed1i c\u01a1 h\u1ecdc:<\/strong> 0,2\u20130,5 dB.<\/p><\/li><li><p><strong>N\u1ed1i h\u00e0n:<\/strong> 0,05\u20130,1 dB.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482604.htm\"><strong>What Does SFP Stand For?<\/strong><\/a><strong> suy hao:<\/strong> 0,35 dB\/km t\u1ea1i b\u01b0\u1edbc s\u00f3ng 1310 nm, 0,2 dB\/km t\u1ea1i b\u01b0\u1edbc s\u00f3ng 1550 nm.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/488477.htm\"><strong>Direct Attach Copper (DAC)<\/strong><\/a><strong> suy hao:<\/strong> 3,0 dB\/km t\u1ea1i b\u01b0\u1edbc s\u00f3ng 850 nm, 1,0 dB\/km t\u1ea1i b\u01b0\u1edbc s\u00f3ng 1300 nm.<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>V\u00ed d\u1ee5, m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n s\u1ee3i quang ch\u1ebf \u0111\u1ed9 \u0111\u01a1n d\u00e0i 10 km t\u1ea1i b\u01b0\u1edbc s\u00f3ng 1550 nm v\u1edbi hai \u0111\u1ea7u n\u1ed1i v\u00e0 hai m\u1ed1i n\u1ed1i c\u00f3 th\u1ec3 c\u00f3 t\u1ed5ng IL \u2248 0,2 \u00d7 10 + 0,3 + 0,1 = 2,4 dB.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 T\u1ed5n hao ch\u00e8n trong t\u00ednh to\u00e1n ng\u00e2n s\u00e1ch \u0111\u01b0\u1eddng truy\u1ec1n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u00e2n s\u00e1ch \u0111\u01b0\u1eddng truy\u1ec1n l\u00e0 ch\u00eanh l\u1ec7ch gi\u1eefa c\u00f4ng su\u1ea5t ph\u00e1t c\u1ee7a b\u1ed9 ph\u00e1t v\u00e0 \u0111\u1ed9 nh\u1ea1y c\u1ee7a b\u1ed9 thu, \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh theo IL v\u00e0 d\u1ef1 ph\u00f2ng.<\/p>\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>C\u00f4ng su\u1ea5t b\u1ed9 ph\u00e1t (Tx): 0 dBm<\/p><\/li><li><p>\u0110\u1ed9 nh\u1ea1y b\u1ed9 thu (Rx): \u201314 dBm<\/p><\/li><li><p>Ng\u00e2n s\u00e1ch kh\u1ea3 d\u1ee5ng = 14 dB<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu IL = 10 dB, d\u1ef1 ph\u00f2ng = 4 dB \u2192 <strong>ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c<\/strong>.<br\/>N\u1ebfu IL = 15 dB, d\u1ef1 ph\u00f2ng = \u20131 dB \u2192 <strong>\u0111\u01b0\u1eddng truy\u1ec1n th\u1ea5t b\u1ea1i<\/strong>.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u0110i\u1ec1u n\u00e0y cho th\u1ea5y v\u00ec sao ngay c\u1ea3 ph\u1ea7n nh\u1ecf c\u1ee7a dB c\u0169ng r\u1ea5t quan tr\u1ecdng.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 \u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn b\u1ed9 thu ph\u00e1t quang<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed5n hao ch\u00e8n \u1ea3nh h\u01b0\u1edfng <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">module quang<br><\/a> theo ba c\u00e1ch ch\u00ednh:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>Gi\u1ea3m d\u1ef1 ph\u00f2ng:<\/strong> IL cao l\u00e0m gi\u1ea3m d\u1ef1 ph\u00f2ng h\u1ec7 th\u1ed1ng kh\u1ea3 d\u1ee5ng, khi\u1ebfn \u0111\u01b0\u1eddng truy\u1ec1n d\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi l\u00e3o h\u00f3a ho\u1eb7c thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.<\/p><\/li><li><p><strong>T\u1ef7 l\u1ec7 l\u1ed7i bit (BER) t\u0103ng:<\/strong> T\u1ef7 s\u1ed1 t\u00edn hi\u1ec7u tr\u00ean nhi\u1ec5u (SNR) th\u1ea5p h\u01a1n t\u1ea1i b\u1ed9 thu d\u1eabn \u0111\u1ebfn nhi\u1ec1u l\u1ed7i bit h\u01a1n.<\/p><\/li><li><p><strong>Gi\u1ea3m kho\u1ea3ng c\u00e1ch truy\u1ec1n:<\/strong> M\u1ed9t module c\u00f3 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u1ea1t 40 km c\u00f3 th\u1ec3 ch\u1ec9 truy\u1ec1n \u0111\u01b0\u1ee3c 30 km n\u1ebfu IL v\u01b0\u1ee3t qu\u00e1 gi\u1ea3 \u0111\u1ecbnh.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, LINK-PP\u2019s <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482907.htm\"><strong>LS-CW3110-40I<\/strong><\/a><strong> b\u1ed9 thu ph\u00e1t quang<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho truy\u1ec1n d\u1eabn 40 km \u1edf t\u1ed1c \u0111\u1ed9 10G. N\u1ebfu tri\u1ec3n khai v\u1edbi t\u1ed5n hao ch\u00e8n (IL) v\u01b0\u1ee3t m\u1ee9c (\u0111\u1ea7u n\u1ed1i b\u1ea9n, m\u1ed1i h\u00e0n k\u00e9m), kho\u1ea3ng c\u00e1ch truy\u1ec1n hi\u1ec7u d\u1ee5ng s\u1ebd gi\u1ea3m. Do \u0111\u00f3, vi\u1ec7c ki\u1ec3m tra IL l\u00e0 m\u1ed9t ph\u1ea7n trong quy tr\u00ecnh \u0111\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng \u0111\u1ea1t m\u1ee9c ghi trong b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 C\u00e1ch gi\u1ea3m thi\u1ec3u t\u1ed5n hao ch\u00e8n<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>L\u00e0m s\u1ea1ch c\u00e1c \u0111\u1ea7u n\u1ed1i<\/strong> tr\u01b0\u1edbc m\u1ed7i l\u1ea7n s\u1eed d\u1ee5ng b\u1eb1ng kh\u0103n lau kh\u00f4ng x\u01a1 v\u00e0 c\u1ed3n isopropyl.<\/p><\/li><li><p><strong>Ki\u1ec3m tra m\u1eb7t cu\u1ed1i s\u1ee3i quang<\/strong> b\u1eb1ng k\u00ednh soi s\u1ee3i quang.<\/p><\/li><li><p><strong>S\u1eed d\u1ee5ng h\u00e0n fusion<\/strong> thay v\u00ec h\u00e0n c\u01a1 h\u1ecdc b\u1ea5t c\u1ee9 khi n\u00e0o c\u00f3 th\u1ec3.<\/p><\/li><li><p><strong>Tr\u00e1nh u\u1ed1n cong s\u1eafc n\u00e9t<\/strong> \u2014 tu\u00e2n th\u1ee7 b\u00e1n k\u00ednh u\u1ed1n c\u1ee7a s\u1ee3i quang.<\/p><\/li><li><p><strong>Ch\u1ecdn c\u00e1c th\u00e0nh ph\u1ea7n ch\u1ea5t l\u01b0\u1ee3ng cao<\/strong> \u2014 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">m\u00f4-\u0111un<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-21644-fiber-optic-cages-connectors.htm\">c\u00e1c \u0111\u1ea7u n\u1ed1i<\/a>, and <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26454-dac-aoc-aec-cables.htm\">d\u00e2y n\u1ed1i (patch cord)<\/a> c\u00f3 th\u00f4ng s\u1ed1 t\u1ed5n hao ch\u00e8n (IL) \u0111\u01b0\u1ee3c cam k\u1ebft.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 LINK-PP h\u1ed7 tr\u1ee3 \u1edf \u0111\u00e2u<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9cc5ec3f48c48f3b5b28dfe28abb572.webp\" alt=\"LINK-PP Solutions\" class=\"wp-image-5278\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9cc5ec3f48c48f3b5b28dfe28abb572.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9cc5ec3f48c48f3b5b28dfe28abb572-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9cc5ec3f48c48f3b5b28dfe28abb572-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9cc5ec3f48c48f3b5b28dfe28abb572-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d9cc5ec3f48c48f3b5b28dfe28abb572-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang thi\u1ebft k\u1ebf ho\u1eb7c v\u1eadn h\u00e0nh c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n trong d\u1ea3i t\u1ed1c \u0111\u1ed9 t\u1eeb 1G \u0111\u1ebfn 800G, LINK-PP cung c\u1ea5p c\u00e1c module v\u00e0 gi\u1ea3i ph\u00e1p k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch, hi\u1ec7u n\u0103ng v\u00e0 quy tr\u00ecnh ch\u1ee9ng nh\u1eadn tr\u01a1n tru:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ed9 thu ph\u00e1t quang: c\u00e1c d\u00f2ng SFP\/SFP+, SFP28, QSFP28, QSFP-DD, OSFP ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n quang h\u1ecdc Ethernet c\u1ee7a IEEE. Xem t\u1ed5ng quan c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 l\u00fd do c\u00e1c doanh nghi\u1ec7p ch\u1ecdn module c\u1ee7a ch\u00fang t\u00f4i t\u1ea1i <a target=\"_blank\" rel=\"nofollow\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/why-choose-link-pp-fiber-optical-modules\/\">V\u00ec sao n\u00ean ch\u1ecdn module quang s\u1ee3i LINK-PP<\/a>.<\/p><\/li><li><p>\u0110\u1ea7u n\u1ed1i v\u00e0 c\u1ee5m l\u1eafp r\u00e1p: \u0111\u1ea7u n\u1ed1i LC duplex v\u00e0 \u0111\u1ea7u n\u1ed1i t\u01b0\u01a1ng th\u00edch MPO\/MTP v\u1edbi c\u00e1c t\u00f9y ch\u1ecdn t\u1ed5n hao th\u1ea5p nh\u1eb1m b\u1ea3o v\u1ec7 ng\u00e2n s\u00e1ch c\u1ee7a b\u1ea1n. \u0110\u1ec3 hi\u1ec3u n\u1ec1n t\u1ea3ng v\u1ec1 \u0111\u1ea7u n\u1ed1i, vui l\u00f2ng xem <a target=\"_blank\" rel=\"nofollow\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/common-fiber-connector-types-optical-transceivers\/\">C\u00e1c lo\u1ea1i \u0111\u1ea7u n\u1ed1i s\u1ee3i quang ph\u1ed5 bi\u1ebfn trong b\u1ed9 thu ph\u00e1t quang<\/a>.<\/p><\/li><li><p>\u0110\u00e1nh gi\u00e1 tr\u1edf n\u00ean d\u1ec5 d\u00e0ng: Y\u00eau c\u1ea7u m\u1eabu mi\u1ec5n ph\u00ed v\u00e0 nh\u1eadn h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt \u0111\u1ec3 x\u00e1c th\u1ef1c t\u1ed5n hao ch\u00e8n (IL) v\u00e0 ng\u00e2n s\u00e1ch \u0111\u01b0\u1eddng truy\u1ec1n trong m\u00f4i tr\u01b0\u1eddng c\u1ee7a b\u1ea1n\u2014xem c\u00e1c n\u00fat k\u00eau g\u1ecdi h\u00e0nh \u0111\u1ed9ng (CTA) v\u1ec1 m\u1eabu\/h\u1ed7 tr\u1ee3 tr\u00ean c\u00e1c trang c\u1eeda h\u00e0ng c\u1ee7a ch\u00fang t\u00f4i nh\u01b0 trang <a target=\"_blank\" rel=\"nofollow\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\">Trang danh m\u1ee5c SFP 1G c\u1ee7a LINK-PP<\/a>.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ) ng\u1eafn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C1: Gi\u00e1 tr\u1ecb t\u1ed5n hao ch\u00e8n ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c cho m\u1ed7i \u0111\u1ea7u n\u1ed1i l\u00e0 bao nhi\u00eau?<\/strong><br\/>\u0110: \u0110\u1ed1i v\u1edbi c\u00e1c \u0111\u1ea7u n\u1ed1i ch\u1ea5t l\u01b0\u1ee3ng cao, gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh l\u00e0 &lt;0,3 dB.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C2: T\u1ed5n hao ch\u00e8n n\u00ean \u0111\u01b0\u1ee3c ki\u1ec3m tra bao l\u00e2u m\u1ed9t l\u1ea7n?<\/strong><br\/>\u0110: Khi l\u1eafp \u0111\u1eb7t v\u00e0 sau b\u1ea5t k\u1ef3 b\u1ea3o tr\u00ec l\u1edbn n\u00e0o. C\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n quan tr\u1ecdng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m tra l\u1ea1i trong c\u00e1c \u0111\u1ee3t ki\u1ec3m to\u00e1n \u0111\u1ecbnh k\u1ef3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C3: Li\u1ec7u t\u1ed5n hao ch\u00e8n c\u00f3 th\u1ec3 gi\u1ea3m sau khi \u0111\u00e3 l\u1eafp \u0111\u1eb7t kh\u00f4ng?<\/strong><br\/>\u0110: Th\u01b0\u1eddng l\u00e0 c\u00f3 \u2014 l\u00e0m s\u1ea1ch c\u00e1c \u0111\u1ea7u n\u1ed1i ho\u1eb7c n\u1ed1i l\u1ea1i c\u00e1c m\u1ed1i h\u00e0n c\u00f3 t\u1ed5n hao cao c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m t\u1ed5n hao ch\u00e8n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed5n hao ch\u00e8n c\u00f3 v\u1ebb l\u00e0 m\u1ed9t con s\u1ed1 nh\u1ecf, nh\u01b0ng trong c\u00e1c m\u1ea1ng quang t\u1ed1c \u0111\u1ed9 cao th\u00ec t\u1eebng ph\u1ea7n nh\u1ecf c\u1ee7a decibel \u0111\u1ec1u c\u00f3 \u00fd ngh\u0129a. Thi\u1ebft k\u1ebf \u0111\u00fang c\u00e1ch, ki\u1ec3m tra v\u00e0 b\u1ea3o tr\u00ec th\u00edch h\u1ee3p l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 tri\u1ec3n khai <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>transceiver quang h\u1ecdc LINK-PP<\/strong><\/a>, vi\u1ec7c ki\u1ec3m tra t\u1ed5n hao ch\u00e8n l\u00e0 m\u1ed9t b\u01b0\u1edbc then ch\u1ed1t nh\u1eb1m x\u00e1c th\u1ef1c hi\u1ec7u su\u1ea5t trong th\u1ef1c t\u1ebf. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 t\u1ed5n hao ch\u00e8n, ki\u1ec3m tra ch\u00ednh x\u00e1c v\u00e0 gi\u1ea3m thi\u1ec3u n\u00f3 trong th\u1ef1c ti\u1ec5n, c\u00e1c nh\u00e0 v\u1eadn h\u00e0nh m\u1ea1ng c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n \u0111\u00e1ng tin c\u1eady, hi\u1ec7u su\u1ea5t cao v\u00e0 s\u1eb5n s\u00e0ng cho t\u01b0\u01a1ng lai.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u v\u1ec1 t\u1ed5n hao ch\u00e8n quang (optical transceiver insertion loss), c\u00e1ch n\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ng\u00e2n s\u00e1ch \u0111\u01b0\u1eddng truy\u1ec1n (link budget), t\u1ef7 l\u1ec7 l\u1ed7i bit (BER) v\u00e0 m\u00e3 h\u00f3a s\u1eeda l\u1ed7i (FEC). Bao g\u1ed3m c\u00e1c gi\u00e1 tr\u1ecb s\u1ed1 cho \u0111\u1ea7u n\u1ed1i LC\/MPO, m\u1eb9o \u0111i\u1ec1u khi\u1ec3n v\u00e0 th\u00f4ng tin chuy\u00ean s\u00e2u t\u1eeb LINK-PP.<\/p>","protected":false},"author":1,"featured_media":5279,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[19,21,26],"class_list":["post-5280","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-aoc-dac-cables","tag-fiber-optic-cage-and-connector","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5280","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=5280"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5280\/revisions"}],"predecessor-version":[{"id":11203,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5280\/revisions\/11203"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/5279"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=5280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=5280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=5280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}