{"id":3810,"date":"2025-06-23T00:00:00","date_gmt":"2025-06-23T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/what-is-lwdm-and-why-important-for-lans\/"},"modified":"2026-06-22T09:25:25","modified_gmt":"2026-06-22T09:25:25","slug":"what-is-lwdm-and-why-important-for-lans","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-lwdm-and-why-important-for-lans","title":{"rendered":"LWDM l\u00e0 g\u00ec v\u00e0 T\u1ea1i sao N\u00f3 Quan Tr\u1ecdng \u0111\u1ed1i v\u1edbi M\u1ea1ng LAN"},"content":{"rendered":"<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\/b50af26084fc4fa5890678b00ba24169.webp\" alt=\"What is LWDM\" class=\"wp-image-3807\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b50af26084fc4fa5890678b00ba24169.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b50af26084fc4fa5890678b00ba24169-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b50af26084fc4fa5890678b00ba24169-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b50af26084fc4fa5890678b00ba24169-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b50af26084fc4fa5890678b00ba24169-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"qc-p1-tag\" style=\"color: rgb(64, 64, 64);\">Trong h\u00e0nh tr\u00ecnh kh\u00f4ng ng\u1eebng ngh\u1ec9 nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u0103ng th\u00f4ng cao h\u01a1n v\u00e0 m\u1eadt \u0111\u1ed9 m\u1ea1ng l\u1edbn h\u01a1n, c\u00e1c c\u00f4ng ngh\u1ec7 quang h\u1ecdc \u0111\u1ed5i m\u1edbi li\u00ean t\u1ee5c xu\u1ea5t hi\u1ec7n. M\u1ed9t trong nh\u1eefng c\u00f4ng ngh\u1ec7 nh\u01b0 v\u1eady \u0111ang ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng l\u00e0 <\/span><span class=\"qc-p1-tag\"><strong>LWDM (\u0110a ph\u00e2n k\u00eanh theo b\u01b0\u1edbc s\u00f3ng cho M\u1ea1ng LAN)<\/strong><\/span><span class=\"qc-p1-tag\" style=\"color: rgb(64, 64, 64);\">. N\u1ebfu b\u1ea1n tham gia v\u00e0o quy ho\u1ea1ch m\u1ea1ng, v\u1eadn h\u00e0nh trung t\u00e2m d\u1eef li\u1ec7u ho\u1eb7c vi\u1ec5n th\u00f4ng, vi\u1ec7c hi\u1ec3u r\u00f5 LWDM \u0111ang tr\u1edf n\u00ean ng\u00e0y c\u00e0ng quan tr\u1ecdng. H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111i s\u00e2u v\u00e0o c\u00f4ng ngh\u1ec7 LWDM l\u00e0 g\u00ec, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng, c\u00e1c \u01b0u \u0111i\u1ec3m c\u1ee7a n\u00f3 v\u00e0 nh\u1eefng l\u0129nh v\u1ef1c m\u00e0 n\u00f3 ph\u00e1t huy hi\u1ec7u qu\u1ea3 nh\u1ea5t.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 \u0110i\u1ec3m n\u1ed5i b\u1eadt<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>LWDM<\/strong> g\u1eedi nhi\u1ec1u d\u1eef li\u1ec7u h\u01a1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c b\u01b0\u1edbc s\u00f3ng \u00e1nh s\u00e1ng kh\u00e1c nhau tr\u00ean m\u1ed9t s\u1ee3i quang. \u0110i\u1ec1u n\u00e0y gi\u00fap m\u1ea1ng LAN \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 nhanh h\u01a1n v\u00e0 c\u00f3 b\u0103ng th\u00f4ng l\u1edbn h\u01a1n. LWDM ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t \u1edf kho\u1ea3ng c\u00e1ch ng\u1eafn, t\u1ed1i \u0111a 40 km. N\u00f3 s\u1eed d\u1ee5ng d\u1ea3i O-band \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00edn hi\u1ec7u r\u00f5 r\u00e0ng v\u00e0 \u1ed5n \u0111\u1ecbnh. Vi\u1ec7c n\u00e0y c\u0169ng gi\u00fap gi\u1eef chi ph\u00ed \u1edf m\u1ee9c th\u1ea5p. LWDM l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p cho m\u1ea1ng LAN v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u. N\u00f3 cho ph\u00e9p c\u00e1c doanh nghi\u1ec7p n\u00e2ng c\u1ea5p m\u1ea1ng m\u00e0 kh\u00f4ng c\u1ea7n l\u1eafp \u0111\u1eb7t c\u00e1p m\u1edbi. LWDM d\u1ec5 tri\u1ec3n khai v\u00e0 r\u1ebb h\u01a1n <a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/cwdm-vs-dwdm-differences-channel-capacity-distance-cost\/\">CWDM v\u00e0 DWDM<\/a> \u0111\u1ed1i v\u1edbi m\u1ea1ng c\u1ee5c b\u1ed9. N\u00f3 mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1t gi\u1eefa t\u1ed1c \u0111\u1ed9, gi\u00e1 th\u00e0nh v\u00e0 t\u00ednh d\u1ec5 s\u1eed d\u1ee5ng. LWDM h\u1ed7 tr\u1ee3 s\u1ef1 ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng c\u1ee7a 5G, \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 c\u00e1c thi\u1ebft b\u1ecb th\u00f4ng minh b\u1eb1ng c\u00e1ch cung c\u1ea5p t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u cao v\u00e0 thi\u1ebft l\u1eadp d\u1ec5 d\u00e0ng.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 Hi\u1ec3u r\u00f5 n\u1ec1n t\u1ea3ng c\u1ed1t l\u00f5i: \u0110a ph\u00e2n k\u00eanh theo b\u01b0\u1edbc s\u00f3ng (WDM)<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c LWDM, ch\u00fang ta ph\u1ea3i b\u1eaft \u0111\u1ea7u t\u1eeb n\u1ec1n t\u1ea3ng c\u1ee7a n\u00f3: <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/wdm-optical-transceiver-module-applications\/\"><strong>\u0110a h\u1ee3p ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng (WDM)<\/strong><\/a>. WDM l\u00e0 k\u1ef9 thu\u1eadt c\u01a1 b\u1ea3n cho ph\u00e9p nhi\u1ec1u t\u00edn hi\u1ec7u quang, m\u1ed7i t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c mang tr\u00ean m\u1ed9t b\u01b0\u1edbc s\u00f3ng (ho\u1eb7c m\u00e0u) laser ri\u00eang bi\u1ec7t, \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ed3ng th\u1eddi qua m\u1ed9t s\u1ee3i quang duy nh\u1ea5t. \u0110i\u1ec1u n\u00e0y l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 dung l\u01b0\u1ee3ng c\u1ee7a s\u1ee3i quang m\u00e0 kh\u00f4ng c\u1ea7n l\u1eafp \u0111\u1eb7t th\u00eam c\u00e1p m\u1edbi. Hai lo\u1ea1i WDM ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>CWDM (\u0110a ph\u00e2n k\u00eanh theo b\u01b0\u1edbc s\u00f3ng th\u00f4):<\/strong> S\u1eed d\u1ee5ng kho\u1ea3ng c\u00e1ch k\u00eanh r\u1ed9ng h\u01a1n (th\u01b0\u1eddng l\u00e0 20 nm), ho\u1ea1t \u0111\u1ed9ng trong d\u1ea3i b\u01b0\u1edbc s\u00f3ng t\u1eeb 1270 nm \u0111\u1ebfn 1610 nm. Quang h\u1ecdc \u0111\u01a1n gi\u1ea3n v\u00e0 r\u1ebb h\u01a1n, nh\u01b0ng h\u1ed7 tr\u1ee3 \u00edt k\u00eanh h\u01a1n (th\u01b0\u1eddng t\u1ed1i \u0111a 18 k\u00eanh).<\/p><\/li><li><p style=\"margin: 0px;\"><strong>DWDM (\u0110a ph\u00e2n k\u00eanh theo b\u01b0\u1edbc s\u00f3ng d\u00e0y):<\/strong> S\u1eed d\u1ee5ng kho\u1ea3ng c\u00e1ch k\u00eanh r\u1ea5t h\u1eb9p (v\u00ed d\u1ee5: 0,8 nm, 0,4 nm), ch\u1ee7 y\u1ebfu trong d\u1ea3i C (~1530 nm \u0111\u1ebfn 1565 nm) v\u00e0 d\u1ea3i L. H\u1ed7 tr\u1ee3 s\u1ed1 l\u01b0\u1ee3ng k\u00eanh l\u1edbn (tr\u00ean 80 k\u00eanh), cho ph\u00e9p dung l\u01b0\u1ee3ng kh\u1ed5ng l\u1ed3 tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i. Y\u00eau c\u1ea7u quang h\u1ecdc ph\u1ee9c t\u1ea1p v\u00e0 \u0111\u1eaft \u0111\u1ecf h\u01a1n.<\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 LWDM n\u1eb1m \u1edf \u0111\u00e2u? \u0110\u1ecbnh ngh\u0129a c\u00f4ng ngh\u1ec7<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>LWDM l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a LAN WDM (Wavelength Division Multiplexing cho M\u1ea1ng c\u1ee5c b\u1ed9), l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 WDM chuy\u00ean bi\u1ec7t \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u1ea5p \u0111\u1ea7y kho\u1ea3ng tr\u1ed1ng gi\u1eefa CWDM v\u00e0 DWDM, \u0111\u1eb7c bi\u1ec7t t\u1ed1i \u01b0u h\u00f3a cho k\u1ebft n\u1ed1i m\u1eadt \u0111\u1ed9 cao, chi ph\u00ed th\u1ea5p trong c\u00e1c \u1ee9ng d\u1ee5ng t\u1ea7m ng\u1eafn, th\u01b0\u1eddng d\u00f9ng trong trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng khu\u00f4n vi\u00ean doanh nghi\u1ec7p.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1eb7c \u0111i\u1ec3m \u0111\u1ecbnh ngh\u0129a c\u1ed1t l\u00f5i c\u1ee7a n\u00f3 l\u00e0 <strong>l\u01b0\u1edbi b\u01b0\u1edbc s\u00f3ng ho\u1ea1t \u0111\u1ed9ng<\/strong>. Trong khi CWDM s\u1eed d\u1ee5ng c\u00e1c b\u01b0\u1edbc s\u00f3ng tr\u1ea3i r\u1ed9ng tr\u00ean c\u00e1c d\u1ea3i O, E, S, C v\u00e0 L, v\u00e0 DWDM t\u1eadp trung d\u00e0y \u0111\u1eb7c trong c\u00e1c d\u1ea3i C\/L, th\u00ec LWDM khai th\u00e1c chi\u1ebfn l\u01b0\u1ee3c c\u00e1c b\u01b0\u1edbc s\u00f3ng c\u1ee5 th\u1ec3 ch\u1ee7 y\u1ebfu trong d\u1ea3i <strong>O-band (1260 nm \u0111\u1ebfn 1360 nm)<\/strong>, t\u1eadn d\u1ee5ng \u0111\u1eb7c t\u00ednh t\u00e1n s\u1eafc s\u1eafc k\u00fd th\u1ea5p h\u01a1n c\u1ee7a d\u1ea3i n\u00e0y.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u01b0\u1edbi b\u01b0\u1edbc s\u00f3ng LWDM: \u0110\u1ed9 ch\u00ednh x\u00e1c v\u00ec hi\u1ec7u n\u0103ng<\/strong><\/p>\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\/8e0c2465ec6045f6af6f119372f14aa4.webp\" alt=\"LWDM Wavelength\" class=\"wp-image-3808\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e0c2465ec6045f6af6f119372f14aa4.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e0c2465ec6045f6af6f119372f14aa4-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e0c2465ec6045f6af6f119372f14aa4-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e0c2465ec6045f6af6f119372f14aa4-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e0c2465ec6045f6af6f119372f14aa4-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">LWDM s\u1eed d\u1ee5ng m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c b\u01b0\u1edbc s\u00f3ng x\u00e1c \u0111\u1ecbnh v\u1edbi kho\u1ea3ng c\u00e1ch k\u00eanh l\u00e0 <strong>4 nm<\/strong>. L\u01b0\u1edbi LWDM ph\u1ed5 bi\u1ebfn nh\u1ea5t, \u0111\u01b0\u1ee3c IEEE chu\u1ea9n h\u00f3a cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, s\u1eed d\u1ee5ng 12 b\u01b0\u1edbc s\u00f3ng:<\/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><strong>K\u00eanh LWDM<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>B\u01b0\u1edbc s\u00f3ng (nm)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh LWDM<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>B\u01b0\u1edbc s\u00f3ng (nm)<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 1<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1269.23<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 7<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1295.56<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 2<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1273.54<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 8<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1300.05<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 3<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1277.89<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 9<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1304.58<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 4<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1282.26<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 10<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1309.14<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 5<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1286.66<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 11<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1313.73<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 6<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1291.10<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>K\u00eanh 12<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1318.35<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">*B\u1ea3ng 1: L\u01b0\u1edbi b\u01b0\u1edbc s\u00f3ng LWDM ti\u00eau chu\u1ea9n 12 k\u00eanh (d\u1ef1a tr\u00ean IEEE 802.3cn).*<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01b0\u1edbi c\u1ee5 th\u1ec3 n\u00e0y trong d\u1ea3i O-band gi\u00fap LWDM mang l\u1ea1i nh\u1eefng l\u1ee3i th\u1ebf \u0111\u00e1ng k\u1ec3 cho c\u00e1c \u1ee9ng d\u1ee5ng m\u1ee5c ti\u00eau c\u1ee7a n\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 T\u1ea1i sao ch\u1ecdn LWDM? C\u00e1c l\u1ee3i th\u1ebf c\u1ed1t l\u00f5i<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00f4ng ngh\u1ec7 LWDM<\/strong> mang l\u1ea1i m\u1ed9t t\u1eadp h\u1ee3p l\u1ee3i \u00edch h\u1ea5p d\u1eabn, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng y\u00eau c\u1ea7u m\u1eadt \u0111\u1ed9 cao, nh\u1ea1y c\u1ea3m v\u1ec1 chi ph\u00ed v\u00e0 gi\u1edbi h\u1ea1n v\u1ec1 c\u00f4ng su\u1ea5t:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>Gi\u1ea3m t\u00e1n s\u1eafc s\u1eafc k\u00fd (CD):<\/strong> Ho\u1ea1t \u0111\u1ed9ng trong d\u1ea3i O-band l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 t\u00e1n s\u1eafc s\u1eafc k\u00fd so v\u1edbi d\u1ea3i C m\u00e0 nhi\u1ec1u h\u1ec7 th\u1ed1ng DWDM s\u1eed d\u1ee5ng. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p s\u1eed d\u1ee5ng b\u1ed9 thu ph\u00e1t \u0111\u01a1n gi\u1ea3n v\u00e0 r\u1ebb h\u01a1n, kh\u00f4ng c\u1ea7n c\u00e1c m\u00f4-\u0111un b\u00f9 t\u00e1n s\u1eafc (DCM) ph\u1ee9c t\u1ea1p, \u0111\u1eb7c bi\u1ec7t c\u00f3 l\u1ee3i cho kho\u1ea3ng c\u00e1ch l\u00ean t\u1edbi 10 km.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Hi\u1ec7u qu\u1ea3 chi ph\u00ed:<\/strong> So s\u00e1nh v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng DWDM \u0111\u1ea7y \u0111\u1ee7, b\u1ed9 thu ph\u00e1t LWDM (<br>)<strong>B\u1ed9 thu ph\u00e1t quang LWDM<br><\/strong>) th\u01b0\u1eddng \u00edt ph\u1ee9c t\u1ea1p h\u01a1n v\u00e0 s\u1eed d\u1ee5ng laser kh\u00f4ng l\u00e0m m\u00e1t t\u01b0\u01a1ng t\u1ef1 nh\u01b0 CWDM, d\u1eabn \u0111\u1ebfn chi ph\u00ed m\u00f4-\u0111un th\u1ea5p h\u01a1n v\u00e0 chi ph\u00ed v\u1eadn h\u00e0nh gi\u1ea3m.<br>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>M\u1eadt \u0111\u1ed9 cao:<br><\/strong> Kho\u1ea3ng c\u00e1ch k\u00eanh 4nm cho ph\u00e9p gh\u00e9p 12 k\u00eanh tr\u1edf l\u00ean v\u00e0o m\u1ed9t c\u1eb7p s\u1ee3i quang duy nh\u1ea5t trong m\u1ed9t d\u1ea3i ph\u1ed5 nh\u1ecf g\u1ecdn. \u0110i\u1ec1u n\u00e0y chuy\u1ec3n th\u00e0nh m\u1eadt \u0111\u1ed9 c\u1ed5ng cao tr\u00ean c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn t\u1eadp trung, t\u1ed1i \u0111a h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng kh\u00f4ng gian gi\u00e1 \u0111\u1ee1\u2014m\u1ed9t y\u1ebfu t\u1ed1 then ch\u1ed1t trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i.<br>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>T\u1ed1i \u01b0u cho kho\u1ea3ng c\u00e1ch ng\u1eafn:<br><\/strong> LWDM ho\u1ea1t \u0111\u1ed9ng xu\u1ea5t s\u1eafc ch\u00ednh x\u00e1c trong ph\u1ea1m vi 2km \u0111\u1ebfn 10km, v\u1ed1n ph\u1ed5 bi\u1ebfn cho c\u00e1c k\u1ebft n\u1ed1i n\u1ed9i b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u (DCI) gi\u1eefa c\u00e1c t\u00f2a nh\u00e0 ho\u1eb7c trong khu\u00f4n vi\u00ean l\u1edbn, c\u0169ng nh\u01b0 cho vi\u1ec7c k\u1ebft n\u1ed1i c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch \u0111\u1ea7u t\u1ee7 (ToR) v\u1edbi l\u1edbp t\u1eadp trung.<br>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Tri\u1ec3n khai \u0111\u01a1n gi\u1ea3n:<br><\/strong> Vi\u1ec7c tr\u00e1nh c\u1ea7n b\u00f9 t\u00e1n s\u1eafc v\u00e0 th\u01b0\u1eddng s\u1eed d\u1ee5ng laser kh\u00f4ng l\u00e0m m\u00e1t gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec so v\u1edbi DWDM \u0111\u01b0\u1eddng d\u00e0i.<br>.<\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 LWDM so v\u1edbi CWDM so v\u1edbi DWDM: L\u1ef1a ch\u1ecdn c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p<br><\/strong><\/h2>\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><strong>\u0110\u1eb7c t\u00ednh<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>CWDM<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>LWDM<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>DWDM<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Kho\u1ea3ng c\u00e1ch k\u00eanh<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>20nm<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4 nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0,8nm, 0,4nm, v.v.<br>.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>S\u1ed1 k\u00eanh \u0111i\u1ec3n h\u00ecnh<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a 18<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>8, 12, 24<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>40, 80, 96+<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>D\u1ea3i b\u0103ng ch\u00ednh<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c d\u1ea3i O, E, S, C, L<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>D\u1ea3i O (1260\u20131360 nm)<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c d\u1ea3i C, L<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng t\u1eadp trung<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>&lt;~80 km<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>2 km \u2013 40 km<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>80 km \u2013 h\u00e0ng ngh\u00ecn km<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Chi ph\u00ed b\u1ed9 thu ph\u00e1t<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Th\u1ea5p nh\u1ea5t<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Trung b\u00ecnh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao nh\u1ea5t<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>B\u00f9 t\u00e1n s\u1eafc<br>.<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Hi\u1ebfm khi c\u1ea7n<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Hi\u1ebfm khi c\u1ea7n<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u01b0\u1eddng y\u00eau c\u1ea7u<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Lo\u1ea1i laser<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u00f4ng l\u00e0m m\u00e1t<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Kh\u00f4ng l\u00e0m m\u00e1t<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00e0m m\u00e1t (th\u01b0\u1eddng xuy\u00ean)<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ph\u00f9 h\u1ee3p nh\u1ea5t cho<br><\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nh\u1ea1y c\u1ea3m v\u1edbi chi ph\u00ed, m\u1eadt \u0111\u1ed9 th\u1ea5p, kho\u1ea3ng c\u00e1ch ng\u1eafn\u2013trung b\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Li\u00ean k\u1ebft DCI m\u1eadt \u0111\u1ed9 cao, li\u00ean k\u1ebft khu\u00f4n vi\u00ean, t\u1eadp h\u1ee3p (2\u201340 km)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Truy\u1ec1n d\u1eabn xa, dung l\u01b0\u1ee3ng c\u1ef1c cao<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>B\u1ea3ng 2: So s\u00e1nh \u0111\u1eb7c t\u00ednh c\u1ee7a CWDM, LWDM v\u00e0 DWDM.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 C\u00e1c \u1ee9ng d\u1ee5ng ch\u00ednh c\u1ee7a c\u00f4ng ngh\u1ec7 LWDM<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">LWDM ph\u00e1t huy hi\u1ec7u qu\u1ea3 m\u1ea1nh nh\u1ea5t trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p y\u00eau c\u1ea7u m\u1eadt \u0111\u1ed9 c\u1ed5ng cao, hi\u1ec7u qu\u1ea3 chi ph\u00ed v\u00e0 t\u1ea7m ho\u1ea1t \u0111\u1ed9ng l\u00ean \u0111\u1ebfn 40 km:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>Li\u00ean k\u1ebft gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI):<\/strong> K\u1ebft n\u1ed1i nhi\u1ec1u t\u00f2a nh\u00e0 trung t\u00e2m d\u1eef li\u1ec7u trong c\u00f9ng m\u1ed9t khu\u00f4n vi\u00ean ho\u1eb7c khu v\u1ef1c \u0111\u00f4 th\u1ecb (th\u01b0\u1eddng t\u1eeb 2 km \u0111\u1ebfn 10 km). M\u1eadt \u0111\u1ed9 cao c\u1ee7a LWDM cho ph\u00e9p m\u1edf r\u1ed9ng b\u0103ng th\u00f4ng quy m\u00f4 l\u1edbn tr\u00ean c\u00e1c c\u1eb7p s\u1ee3i quang hi\u1ec7n c\u00f3.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>T\u1eadp h\u1ee3p m\u1eadt \u0111\u1ed9 cao:<\/strong> K\u1ebft n\u1ed1i s\u1ed1 l\u01b0\u1ee3ng l\u1edbn switch Top-of-Rack (ToR) v\u1edbi switch t\u1eadp h\u1ee3p ho\u1eb7c switch l\u00f5i trong m\u1ed9t ph\u00f2ng trung t\u00e2m d\u1eef li\u1ec7u l\u1edbn duy nh\u1ea5t. LWDM t\u1ed1i \u0111a h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng s\u1ee3i quang m\u00e0 kh\u00f4ng c\u1ea7n h\u1ec7 th\u1ed1ng DWDM ph\u1ee9c t\u1ea1p.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Fronthaul 5G:<\/strong> Cung c\u1ea5p k\u1ebft n\u1ed1i b\u0103ng th\u00f4ng cao, \u0111\u1ed9 tr\u1ec5 th\u1ea5p gi\u1eefa c\u00e1c \u0111\u01a1n v\u1ecb t\u1eadp trung (CU), \u0111\u01a1n v\u1ecb ph\u00e2n t\u00e1n (DU) v\u00e0 c\u00e1c \u0111\u01a1n v\u1ecb radio xa (RRU) trong m\u1ea1ng di \u0111\u1ed9ng 5G, \u0111\u1eb7c bi\u1ec7t \u1edf kho\u1ea3ng c\u00e1ch d\u01b0\u1edbi 10 km.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>M\u1ea1ng khu\u00f4n vi\u00ean doanh nghi\u1ec7p:<\/strong> K\u1ebft n\u1ed1i c\u00e1c t\u00f2a nh\u00e0 trong khu\u00f4n vi\u00ean doanh nghi\u1ec7p ho\u1eb7c \u0111\u1ea1i h\u1ecdc quy m\u00f4 l\u1edbn \u2014 n\u01a1i y\u00eau c\u1ea7u b\u0103ng th\u00f4ng cao h\u01a1n CWDM cung c\u1ea5p, nh\u01b0ng DWDM l\u1ea1i qu\u00e1 d\u01b0 th\u1eeba v\u00e0 t\u1ed1n k\u00e9m.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>M\u1edf r\u1ed9ng b\u0103ng th\u00f4ng hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed:<\/strong> Khi \u0111\u1ed1i m\u1eb7t v\u1edbi t\u00ecnh tr\u1ea1ng c\u1ea1n ki\u1ec7t s\u1ee3i quang, LWDM cung c\u1ea5p l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p kh\u1ea3 thi v\u00e0 kinh t\u1ebf h\u01a1n so v\u1edbi vi\u1ec7c l\u1eafp \u0111\u1eb7t th\u00eam s\u1ee3i quang m\u1edbi ho\u1eb7c tri\u1ec3n khai h\u1ec7 th\u1ed1ng DWDM \u0111\u1ea7y \u0111\u1ee7.<\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 Tri\u1ec3n khai LWDM: C\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 y\u1ebfu t\u1ed1 c\u1ea7n l\u01b0u \u00fd<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n LWDM c\u01a1 b\u1ea3n y\u00eau c\u1ea7u:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><span class=\"qc-p1-tag\"><strong>B\u1ed9 thu ph\u00e1t LWDM:<\/strong> \u0110\u01b0\u1ee3c l\u1eafp v\u00e0o switch\/router \u1edf m\u1ed7i \u0111\u1ea7u. \u0110\u00e2y l\u00e0 <strong>module quang LWDM<\/strong> (v\u00ed d\u1ee5: SFP28, QSFP28, QSFP-DD, OSFP) \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh theo c\u00e1c b\u01b0\u1edbc s\u00f3ng LWDM c\u1ee5 th\u1ec3. V\u00ed d\u1ee5, <strong>LINK-PP cung c\u1ea5p c\u00e1c b\u1ed9 thu ph\u00e1t LWDM hi\u1ec7u su\u1ea5t cao nh\u01b0 <\/strong><\/span><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472118.htm\"><span class=\"qc-p1-tag\" style=\"color: var(--qc-color8);\"><strong>LQ-LW100-LR4C<br><\/strong><\/span><\/a><span class=\"qc-p1-tag\"><strong> (c\u00e1c bi\u1ebfn th\u1ec3 t\u1eeb 1295,56 nm \u0111\u1ebfn 1309,14 nm) v\u00e0 <\/strong><\/span><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482513.htm\"><span class=\"qc-p1-tag\" style=\"color: var(--qc-color8);\"><strong>LQ-LW100-ZR4C<br><\/strong><\/span><\/a><span class=\"qc-p1-tag\"><strong> d\u00e0nh cho c\u00e1c \u1ee9ng d\u1ee5ng 100G th\u1ebf h\u1ec7 ti\u1ebfp theo<\/strong>.<\/span><\/p><\/li><li><p style=\"margin: 0px;\"><strong>B\u1ed9 gh\u00e9p k\u00eanh\/t\u00e1ch k\u00eanh LWDM (Mux\/Demux):<\/strong> C\u00e1c th\u00e0nh ph\u1ea7n quang th\u1ee5 \u0111\u1ed9ng k\u1ebft h\u1ee3p (gh\u00e9p k\u00eanh) c\u00e1c t\u00edn hi\u1ec7u b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau l\u00ean m\u1ed9t s\u1ee3i quang duy nh\u1ea5t \u1edf \u0111\u1ea7u ph\u00e1t v\u00e0 t\u00e1ch (t\u00e1ch k\u00eanh) ch\u00fang tr\u1edf l\u1ea1i th\u00e0nh t\u1eebng b\u01b0\u1edbc s\u00f3ng ri\u00eang bi\u1ec7t \u1edf \u0111\u1ea7u thu. C\u00e1c thi\u1ebft b\u1ecb n\u00e0y c\u00f3 s\u1ed1 k\u00eanh nh\u01b0 8, 12 ho\u1eb7c 24.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>S\u1ee3i quang \u0111\u01a1n mode (SMF):<\/strong> S\u1eed d\u1ee5ng s\u1ee3i quang ti\u00eau chu\u1ea9n G.652.D.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 thu ph\u00e1t LWDM v\u00e0 th\u00e0nh ph\u1ea7n th\u1ee5 \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady, ch\u1ea5t l\u01b0\u1ee3ng cao l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng t\u1ed1i \u01b0u v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh m\u1ea1ng.<\/strong> H\u1ee3p t\u00e1c v\u1edbi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t uy t\u00edn nh\u01b0 <strong>LINK-PP<\/strong> \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch, hi\u1ec7u n\u0103ng v\u00e0 tu\u1ed5i th\u1ecd cho c\u00e1c <strong>gi\u1ea3i ph\u00e1p LWDM m\u1eadt \u0111\u1ed9 cao c\u1ee7a b\u1ea1n<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 T\u01b0\u01a1ng lai c\u1ee7a LWDM: M\u1edf r\u1ed9ng theo nhu c\u1ea7u<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u01b0u l\u01b0\u1ee3ng trung t\u00e2m d\u1eef li\u1ec7u ti\u1ebfp t\u1ee5c t\u0103ng m\u1ea1nh v\u00e0 c\u00e1c c\u00f4ng ngh\u1ec7 nh\u01b0 Ethernet 400G v\u00e0 800G tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn, LWDM \u0111ang kh\u00f4ng ng\u1eebng ph\u00e1t tri\u1ec3n. Ch\u00fang ta th\u1ea5y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>S\u1ed1 k\u00eanh ng\u00e0y c\u00e0ng t\u0103ng:<\/strong> V\u01b0\u1ee3t ra ngo\u00e0i 12 k\u00eanh (v\u00ed d\u1ee5: 24 k\u00eanh) nh\u1eb1m h\u1ed7 tr\u1ee3 m\u1eadt \u0111\u1ed9 cao h\u01a1n n\u1eefa.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>H\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 cao h\u01a1n:<\/strong> <strong>B\u1ed9 thu ph\u00e1t quang LWDM<br><\/strong> \u0111\u00e3 v\u00e0 \u0111ang cho ph\u00e9p \u0111\u1ea1t 100G tr\u00ean m\u1ed7i b\u01b0\u1edbc s\u00f3ng (s\u1eed d\u1ee5ng \u0111i\u1ec1u ch\u1ebf PAM4 tr\u00ean c\u00e1c d\u1ea1ng nh\u00e2n t\u1ed1 QSFP28\/QSFP-DD\/OSFP) v\u00e0 s\u1ebd m\u1edf r\u1ed9ng l\u00ean 200G tr\u1edf l\u00ean.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>T\u1ed3n t\u1ea1i song song v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 kh\u00e1c:<\/strong> LWDM c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p v\u1edbi c\u00e1c k\u1ef9 thu\u1eadt nh\u01b0 truy\u1ec1n d\u1eabn hai chi\u1ec1u (BiDi) tr\u00ean m\u1ed9t s\u1ee3i quang duy nh\u1ea5t ho\u1eb7c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng song song v\u1edbi c\u00e1c k\u00eanh CWDM tr\u00ean c\u00e1c d\u1ea3i b\u01b0\u1edbc s\u00f3ng kh\u00e1c nh\u1eb1m t\u1ed1i \u0111a h\u00f3a dung l\u01b0\u1ee3ng s\u1ee3i quang h\u01a1n n\u1eefa.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 Khai ph\u00e1 m\u1eadt \u0111\u1ed9 cao h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 chi ph\u00ed v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p LWDM c\u1ee7a LINK-PP<\/strong><\/h2>\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\/2c75907853f64d3d89eaccaeba68b3e9.webp\" alt=\"LINK-PP\" class=\"wp-image-3809\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2c75907853f64d3d89eaccaeba68b3e9.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2c75907853f64d3d89eaccaeba68b3e9-300x169.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2c75907853f64d3d89eaccaeba68b3e9-1024x576.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2c75907853f64d3d89eaccaeba68b3e9-768x432.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2c75907853f64d3d89eaccaeba68b3e9-18x10.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00f4ng ngh\u1ec7 LWDM<\/strong> LWDM \u0111\u00e3 kh\u1eb3ng \u0111\u1ecbnh v\u1ecb th\u1ebf v\u1eefng ch\u1eafc l\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho k\u1ebft n\u1ed1i b\u0103ng th\u00f4ng cao, m\u1eadt \u0111\u1ed9 cao tr\u00ean kho\u1ea3ng c\u00e1ch ng\u1eafn \u0111\u1ebfn trung b\u00ecnh. Vi\u1ec7c t\u1eadn d\u1ee5ng th\u00f4ng minh l\u01b0\u1edbi b\u01b0\u1edbc s\u00f3ng d\u1ea3i O-band mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng then ch\u1ed1t gi\u1eefa hi\u1ec7u n\u0103ng, m\u1eadt \u0111\u1ed9 v\u00e0 chi ph\u00ed \u2014 \u0111i\u1ec1u m\u00e0 c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i v\u00e0 m\u1ea1ng 5G \u0111ang r\u1ea5t c\u1ea7n. B\u1eb1ng c\u00e1ch cung c\u1ea5p m\u1ee9c t\u0103ng dung l\u01b0\u1ee3ng \u0111\u00e1ng k\u1ec3 so v\u1edbi CWDM m\u00e0 kh\u00f4ng k\u00e8m theo \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u00e0 chi ph\u00ed c\u1ee7a DWDM truy\u1ec1n d\u1eabn xa, LWDM gi\u1ea3i quy\u1ebft hi\u1ec7u qu\u1ea3 c\u00e1c th\u00e1ch th\u1ee9c c\u1ea1n ki\u1ec7t s\u1ee3i quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u1eb5n s\u00e0ng kh\u00e1m ph\u00e1 c\u00e1ch LWDM c\u00f3 th\u1ec3 bi\u1ebfn \u0111\u1ed5i n\u0103ng l\u1ef1c v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a m\u1ea1ng b\u1ea1n?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kh\u00e1m ph\u00e1 to\u00e0n b\u1ed9 d\u00f2ng b\u1ed9 thu ph\u00e1t quang LWDM hi\u1ec7u su\u1ea5t cao, \u0111\u00e1ng tin c\u1eady c\u1ee7a LINK-PP<\/strong>, bao g\u1ed3m c\u00e1c m\u1eabu c\u1ee5 th\u1ec3 nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472708.htm\"><strong>LQ-LW100-ER4C<\/strong><\/a>, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch v\u00e0 v\u1eadn h\u00e0nh t\u1ed1i \u01b0u trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111\u00f2i h\u1ecfi kh\u1eaft khe. C\u00e1c <strong>gi\u1ea3i ph\u00e1p b\u1ed9 thu ph\u00e1t quang chuy\u00ean nghi\u1ec7p c\u1ee7a ch\u00fang t\u00f4i<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n nghi\u00eam ng\u1eb7t d\u00e0nh cho li\u00ean k\u1ebft gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u, fronthaul 5G v\u00e0 n\u00e2ng c\u1ea5p m\u1ea1ng doanh nghi\u1ec7p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">Truy c\u1eadp trang web c\u1ee7a ch\u00fang t\u00f4i \u279c<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/support.htm\">H\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt \u279c<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n c\u00e1 nh\u00e2n h\u00f3a v\u00e0 kh\u00e1m ph\u00e1 s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H: S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa LWDM v\u00e0 CWDM l\u00e0 g\u00ec?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110: LWDM \u0111\u1eb7t c\u00e1c k\u00eanh g\u1ea7n nhau h\u01a1n trong d\u1ea3i O-band. CWDM c\u00f3 c\u00e1c k\u00eanh c\u00e1ch xa h\u01a1n v\u00e0 s\u1eed d\u1ee5ng nhi\u1ec1u b\u01b0\u1edbc s\u00f3ng h\u01a1n. LWDM ph\u00f9 h\u1ee3p v\u1edbi m\u1ea1ng c\u1ee5c b\u1ed9 v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u. CWDM ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t trong m\u1ea1ng \u0111\u00f4 th\u1ecb v\u00e0 m\u1ea1ng truy nh\u1eadp.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H: LWDM c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i LAN nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110: LWDM cho ph\u00e9p LAN truy\u1ec1n d\u1eef li\u1ec7u tr\u00ean nhi\u1ec1u b\u01b0\u1edbc s\u00f3ng qua m\u1ed9t s\u1ee3i quang duy nh\u1ea5t. \u0110i\u1ec1u n\u00e0y mang l\u1ea1i b\u0103ng th\u00f4ng l\u1edbn h\u01a1n v\u00e0 h\u1ed7 tr\u1ee3 nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng h\u01a1n. Doanh nghi\u1ec7p c\u00f3 th\u1ec3 n\u00e2ng c\u1ea5p m\u00e0 kh\u00f4ng c\u1ea7n l\u1eafp \u0111\u1eb7t c\u00e1p m\u1edbi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H: LWDM c\u00f3 h\u1ed7 tr\u1ee3 m\u1ea1ng 5G kh\u00f4ng?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110: LWDM h\u1ed7 tr\u1ee3 m\u1ea1ng 5G b\u1eb1ng c\u00e1ch cung c\u1ea5p b\u0103ng th\u00f4ng cao v\u00e0 t\u00edn hi\u1ec7u \u1ed5n \u0111\u1ecbnh. Nhi\u1ec1u m\u1ea1ng 5G s\u1eed d\u1ee5ng LWDM cho c\u00e1c li\u00ean k\u1ebft fronthaul. C\u00f4ng ngh\u1ec7 n\u00e0y truy\u1ec1n t\u1ea3i l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u nhanh ch\u00f3ng v\u00e0 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H: T\u1ea1i sao c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u s\u1eed d\u1ee5ng LWDM cho li\u00ean k\u1ebft n\u1ed9i b\u1ed9?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110: C\u00e1c trung t\u00e2m d\u1eef li\u1ec7u l\u1ef1a ch\u1ecdn LWDM \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao tr\u00ean kho\u1ea3ng c\u00e1ch ng\u1eafn. C\u00e1c module LWDM c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 100G, 200G ho\u1eb7c 400G. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi \u0111\u1ec3 k\u1ebft n\u1ed1i switch v\u00e0 m\u00e1y ch\u1ee7 trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u m\u1edbi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e2u h\u1ecfi: LWDM c\u00f3 t\u01b0\u01a1ng th\u00edch v\u1edbi s\u1ee3i quang \u0111\u01a1n mode ti\u00eau chu\u1ea9n kh\u00f4ng?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u1ea3 l\u1eddi: LWDM ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c v\u1edbi s\u1ee3i quang \u0111\u01a1n mode th\u00f4ng th\u01b0\u1eddng. C\u00f4ng ngh\u1ec7 n\u00e0y kh\u00f4ng y\u00eau c\u1ea7u c\u00e1p \u0111\u1eb7c bi\u1ec7t. Nh\u1edd \u0111\u00f3, vi\u1ec7c tri\u1ec3n khai LWDM trong c\u00e1c m\u1ea1ng LAN c\u0169 tr\u1edf n\u00ean d\u1ec5 d\u00e0ng v\u00e0 gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed n\u00e2ng c\u1ea5p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >Xem Th\u00eam<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/wdm-optical-transceiver-module-applications\/\">Kh\u00e1m ph\u00e1 c\u00f4ng ngh\u1ec7 WDM v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong m\u1ea1ng quang<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\">T\u1ea7m quan tr\u1ecdng c\u1ee7a gi\u00e1m s\u00e1t k\u1ef9 thu\u1eadt s\u1ed1 trong b\u1ed9 thu ph\u00e1t quang<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/dfb-laser-definition\/\">Gi\u1edbi thi\u1ec7u t\u1ed5ng quan v\u1ec1 laser ph\u1ea3n h\u1ed3i ph\u00e2n b\u1ed1 (DFB) \u2013 Gi\u1ea3i th\u00edch r\u00f5 r\u00e0ng<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/tosa-in-optical-modules-importance\/\">Vai tr\u00f2 v\u00e0 \u00fd ngh\u0129a c\u1ee7a TOSA trong c\u00e1c module quang<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/products\/qsfp-dd-lr4-transceiver-400g-10km-solution\/\">Gi\u1edbi thi\u1ec7u c\u1ed9ng \u0111\u1ed3ng LINK-PP v\u00e0 nh\u1eefng l\u1ee3i \u00edch m\u00e0 c\u1ed9ng \u0111\u1ed3ng n\u00e0y mang l\u1ea1i<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>LWDM l\u00e0 g\u00ec? LWDM l\u00e0 c\u00f4ng ngh\u1ec7 WDM cho m\u1ea1ng c\u1ee5c b\u1ed9 (LAN) s\u1eed d\u1ee5ng nhi\u1ec1u b\u01b0\u1edbc s\u00f3ng \u0111\u1ec3 t\u0103ng b\u0103ng th\u00f4ng v\u00e0 hi\u1ec7u su\u1ea5t trong m\u1ea1ng c\u1ee5c b\u1ed9 v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u.<\/p>","protected":false},"author":1,"featured_media":3807,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[26],"class_list":["post-3810","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3810","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=3810"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3810\/revisions"}],"predecessor-version":[{"id":11453,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3810\/revisions\/11453"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/3807"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=3810"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=3810"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=3810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}