{"id":6944,"date":"2025-08-19T00:00:00","date_gmt":"2025-08-19T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/100g-cwdm4-lr4-single-mode-fiber-key-differences-use-cases\/"},"modified":"2026-06-22T08:20:19","modified_gmt":"2026-06-22T08:20:19","slug":"100g-cwdm4-lr4-single-mode-fiber-key-differences-use-cases","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/100g-cwdm4-lr4-single-mode-fiber-key-differences-use-cases","title":{"rendered":"So s\u00e1nh QSFP28 100G CWDM4 v\u00e0 LR4 cho c\u00e1c tri\u1ec3n khai tr\u00ean s\u1ee3i quang \u0111\u01a1n mode"},"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\/8244e8dc75e24b2e8a1ec07d6aada7cb.webp\" alt=\"100G CWDM4 VS LR4\" class=\"wp-image-6942\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8244e8dc75e24b2e8a1ec07d6aada7cb.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8244e8dc75e24b2e8a1ec07d6aada7cb-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8244e8dc75e24b2e8a1ec07d6aada7cb-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8244e8dc75e24b2e8a1ec07d6aada7cb-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8244e8dc75e24b2e8a1ec07d6aada7cb-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn gi\u1eefa c\u00e1c m\u00f4-\u0111un QSFP28 100G CWDM4 v\u00e0 LR4 cho trung t\u00e2m d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n?<\/strong> Hai ti\u00eau chu\u1ea9n th\u1ed1ng tr\u1ecb n\u00e0y <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\"><strong>b\u1ed9 thu ph\u00e1t quang 100G<br><\/strong><\/a> tr\u00f4ng t\u01b0\u01a1ng t\u1ef1 nhau nh\u01b0ng c\u00f3 nh\u1eefng kh\u00e1c bi\u1ec7t quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn chi ph\u00ed, kho\u1ea3ng c\u00e1ch truy\u1ec1n v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng. H\u01b0\u1edbng d\u1eabn n\u00e0y gi\u00fap b\u1ea1n lo\u1ea1i b\u1ecf s\u1ef1 ph\u1ee9c t\u1ea1p, trao quy\u1ec1n \u0111\u1ec3 b\u1ea1n \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh <strong>ho\u00e0n h\u1ea3o<\/strong>, <strong>ti\u1ebft ki\u1ec7m chi ph\u00ed<\/strong> ph\u00f9 h\u1ee3p cho c\u00e1c k\u1ebft n\u1ed1i t\u1ed1c \u0111\u1ed9 cao c\u1ee7a b\u1ea1n.<\/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>Ch\u1ecdn <strong>C\u00e1c m\u00f4-\u0111un 100G CWDM4<\/strong> d\u00e0nh cho kho\u1ea3ng c\u00e1ch ng\u1eafn ho\u1eb7c trung b\u00ecnh <strong>l\u00ean \u0111\u1ebfn 2 km<\/strong>. C\u00e1c m\u00f4-\u0111un n\u00e0y gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 ti\u00eau th\u1ee5 \u00edt n\u0103ng l\u01b0\u1ee3ng h\u01a1n. Ch\u00fang v\u1eabn \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1t.<\/p><\/li><li><p>S\u1eed d\u1ee5ng <strong>C\u00e1c m\u00f4-\u0111un 100G LR4<\/strong> d\u00e0nh cho kho\u1ea3ng c\u00e1ch xa <strong>l\u00ean \u0111\u1ebfn 10 km<\/strong>. C\u00e1c m\u00f4-\u0111un n\u00e0y cung c\u1ea5p t\u00edn hi\u1ec7u m\u1ea1nh v\u00e0 \u0111\u00e1ng tin c\u1eady. B\u1ea1n c\u1ea7n chi nhi\u1ec1u h\u01a1n cho ch\u00fang.<\/p><\/li><li><p>Ki\u1ec3m tra xem thi\u1ebft b\u1ecb m\u1ea1ng c\u1ee7a b\u1ea1n c\u00f3 t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c m\u00f4-\u0111un hay kh\u00f4ng tr\u01b0\u1edbc khi mua. \u0110\u1ea3m b\u1ea3o c\u00e1c m\u00f4-\u0111un ph\u00f9 h\u1ee3p v\u1edbi b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn c\u1ee7a b\u1ea1n.<\/p><\/li><li><p>C\u00e2n nh\u1eafc kho\u1ea3ng c\u00e1ch m\u00e0 m\u1ea1ng c\u1ee7a b\u1ea1n c\u1ea7n \u0111\u1ea1t \u0111\u01b0\u1ee3c v\u00e0 ng\u00e2n s\u00e1ch hi\u1ec7n c\u00f3. Ch\u1ecdn m\u00f4-\u0111un ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u hi\u1ec7n t\u1ea1i v\u00e0 t\u01b0\u01a1ng lai c\u1ee7a b\u1ea1n.<\/p><\/li><li><p>Bi\u1ebft r\u1eb1ng <strong>CWDM4 s\u1eed d\u1ee5ng laser \u0111i\u1ec1u ch\u1ebf tr\u1ef1c ti\u1ebfp<\/strong> v\u00e0 y\u00eau c\u1ea7u s\u1eeda l\u1ed7i. <strong>LR4 s\u1eed d\u1ee5ng laser \u0111i\u1ec1u ch\u1ebf ngo\u00e0i<\/strong> \u0111\u1ec3 \u0111\u1ea1t kho\u1ea3ng c\u00e1ch xa h\u01a1n v\u00e0 c\u00f3 th\u1ec3 kh\u00f4ng lu\u00f4n c\u1ea7n s\u1eeda l\u1ed7i.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 Hi\u1ec3u r\u00f5 c\u00e1c c\u00f4ng ngh\u1ec7 c\u1ed1t l\u00f5i<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Both <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472577.htm\"><strong>QSFP28 CWDM4<\/strong><\/a> and <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472118.htm\"><strong>QSFP28 LR4<\/strong><\/a> l\u00e0 c\u00e1c b\u1ed9 thu ph\u00e1t 100GBase c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3ng, s\u1eed d\u1ee5ng b\u1ed1n k\u00eanh 25 Gbps. S\u1ef1 kh\u00e1c bi\u1ec7t c\u1ed1t l\u00f5i c\u1ee7a ch\u00fang n\u1eb1m \u1edf <strong>ER4 =<\/strong> and <strong>link budget<\/strong>:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px 0px 4px;\"><strong>B\u1ed9 thu ph\u00e1t QSFP28 100G CWDM4 (100GBase-CWDM4):<\/strong><\/p><ul><li><p style=\"margin: 0px;\"><strong>B\u01b0\u1edbc s\u00f3ng:<\/strong> S\u1eed d\u1ee5ng b\u1ed1n b\u01b0\u1edbc s\u00f3ng trong d\u1ea3i <strong>Ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng th\u00f4 <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-cwdm-understanding-coarse-wavelength-division-multiplexing\/\"><strong>(CWDM)<\/strong><\/a> : kho\u1ea3ng <strong>1271 nm, 1291 nm, 1311 nm v\u00e0 1331 nm<\/strong>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>L\u00ean \u0111\u1ebfn 70 m tr\u00ean OM3, 100 m tr\u00ean OM4, 150 m tr\u00ean OM5. Chu\u1ea9n h\u00f3a \u1edf m\u1ee9c 100 m tr\u00ean OM4.<\/strong> \u0110\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho<br> <strong>l\u00ean \u0111\u1ebfn 2 km<\/strong> tr\u00ean s\u1ee3i quang \u0111\u01a1n mode (SMF) ti\u00eau chu\u1ea9n <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-single-mode-fiber-and-how-does-it-work\/\"><strong>s\u1ee3i quang \u0111\u01a1n mode<\/strong><\/a><strong> (SMF)<br><\/strong>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u01afu \u0111i\u1ec3m ch\u00ednh:<\/strong> <strong>Hi\u1ec7u qu\u1ea3 chi ph\u00ed<\/strong>. T\u1eadn d\u1ee5ng kho\u1ea3ng c\u00e1ch k\u00eanh r\u1ed9ng h\u01a1n, cho ph\u00e9p s\u1eed d\u1ee5ng laser v\u00e0 quang h\u1ecdc \u0111\u01a1n gi\u1ea3n h\u01a1n (r\u1ebb h\u01a1n). R\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi <strong>, thi\u1ebft k\u1ebf<\/strong> tri\u1ec3n khai n\u01a1i <strong>ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng<\/strong> and <strong>gi\u00e1 th\u00e0nh m\u00f4-\u0111un quang h\u1ecdc<\/strong> l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>S\u1eed d\u1ee5ng s\u1ee3i quang:<\/strong> chuy\u1ec3n m\u1ea1ch ch\u1ecdn l\u1ecdc b\u01b0\u1edbc s\u00f3ng d\u1ef1a tr\u00ean WSS <strong>hai s\u1ee3i quang \u0111\u01a1n mode (SMF)<\/strong> (m\u1ed9t s\u1ee3i cho truy\u1ec1n, m\u1ed9t s\u1ee3i cho nh\u1eadn) \u2014 m\u1ed9t <strong>c\u1eb7p s\u1ee3i quang<\/strong>.<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>B\u1ed9 thu ph\u00e1t QSFP28 100G LR4 (100GBase-LR4):<\/strong><\/p><ul><li><p style=\"margin: 0px;\"><strong>B\u01b0\u1edbc s\u00f3ng:<\/strong> S\u1eed d\u1ee5ng b\u1ed1n b\u01b0\u1edbc s\u00f3ng x\u1ebfp s\u00e1t nhau quanh c\u1eeda s\u1ed5 1310 nm (<strong>1295,56 nm, 1300,05 nm, 1304,58 nm, 1309,14 nm<\/strong>) d\u1ef1a tr\u00ean <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-lwdm-and-why-important-for-lans\/\"><strong>LAN-WDM<\/strong><\/a> c\u00f4ng ngh\u1ec7.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>L\u00ean \u0111\u1ebfn 70 m tr\u00ean OM3, 100 m tr\u00ean OM4, 150 m tr\u00ean OM5. Chu\u1ea9n h\u00f3a \u1edf m\u1ee9c 100 m tr\u00ean OM4.<\/strong> \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho kho\u1ea3ng c\u00e1ch xa h\u01a1n, h\u1ed7 tr\u1ee3 <strong>l\u00ean \u0111\u1ebfn 10 km<\/strong> tr\u00ean s\u1ee3i quang \u0111\u01a1n mode (SMF) ti\u00eau chu\u1ea9n <strong>v\u00e0 s\u1ee3i quang \u0111\u01a1n mode (SMF)<\/strong>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u01afu \u0111i\u1ec3m ch\u00ednh: Kho\u1ea3ng c\u00e1ch truy\u1ec1n<\/strong>. Thi\u1ebft y\u1ebfu \u0111\u1ec3 k\u1ebft n\u1ed1i <strong>m\u1ea1ng khu\u00f4n vi\u00ean<\/strong>, <strong>metro Ethernet<\/strong>, ho\u1eb7c li\u00ean k\u1ebft <strong>c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u ph\u00e2n t\u00e1n<\/strong> gi\u1eefa c\u00e1c t\u00f2a nh\u00e0.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>S\u1eed d\u1ee5ng s\u1ee3i quang:<\/strong> C\u0169ng s\u1eed d\u1ee5ng <strong>hai s\u1ee3i quang \u0111\u01a1n mode (SMF)<\/strong> hai s\u1ee3i (m\u1ed9t s\u1ee3i cho truy\u1ec1n, m\u1ed9t s\u1ee3i cho nh\u1eadn).<\/p><\/li><\/ul><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 So s\u00e1nh tr\u1ef1c ti\u1ebfp: CWDM4 so v\u1edbi LR4<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng t\u00f3m t\u1eaft r\u00f5 r\u00e0ng c\u00e1c kh\u00e1c bi\u1ec7t quan tr\u1ecdng:<\/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;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1eb7c t\u00ednh<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>QSFP28 100G CWDM4<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>QSFP28 100G LR4<br><\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ti\u00eau chu\u1ea9n<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100GBase-CWDM4 (IEEE) \/ MSA<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100GBase-LR4 (IEEE 802.3bm \u0110i\u1ec1u kho\u1ea3n 88)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>D\u1ea3i b\u01b0\u1edbc s\u00f3ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>CWDM (~1271, 1291, 1311, 1331 nm)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LAN-WDM (~1295, 1300, 1304, 1309 nm)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ph\u1ea1m vi t\u1ed1i \u0111a<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>2 km<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>10 km<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Lo\u1ea1i s\u1ee3i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>C\u00e1p quang \u0111\u01a1n mode (SMF)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>C\u00e1p quang \u0111\u01a1n mode (SMF)<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>S\u1ed1 s\u1ee3i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>2 s\u1ee3i quang<\/strong> (1 c\u1eb7p truy\u1ec1n, 1 c\u1eb7p nh\u1eadn) \u2705<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>2 s\u1ee3i quang<\/strong> (1 c\u1eb7p truy\u1ec1n, 1 c\u1eb7p nh\u1eadn)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Chi ph\u00ed \u0111i\u1ec3n h\u00ecnh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Lower<\/strong> (Laser v\u00e0 quang h\u1ecdc \u0111\u01a1n gi\u1ea3n h\u01a1n) \ud83d\udcb0<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Cao h\u01a1n<\/strong> (\u0110\u1ed9 dung sai ch\u1eb7t ch\u1ebd h\u01a1n v\u00e0 t\u1ea7m xa h\u01a1n)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ti\u00eau Th\u1ee5 N\u0103ng L\u01b0\u1ee3ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u00f4ng th\u01b0\u1eddng <strong>Lower<\/strong> (&lt; 3,5 W) \ud83d\udd0b<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u00f4ng th\u01b0\u1eddng <strong>Cao h\u01a1n m\u1ed9t ch\u00fat<\/strong> (\u2264 3,5 W)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u00ednh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Li\u00ean k\u1ebft n\u1ed9i b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u c\u1ef1 ly ng\u1eafn (DCI)<\/strong>, T\u1eeb Top-of-Rack (ToR) \u0111\u1ebfn Leaf<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>DCI c\u1ef1 ly d\u00e0i h\u01a1n<\/strong>, Li\u00ean k\u1ebft \u0111\u00f4 th\u1ecb (Metro), khu\u00f4n vi\u00ean (Campus), t\u1eeb Leaf \u0111\u1ebfn Spine\/Core<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Tu\u00e2n th\u1ee7 MSA<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>CWDM4 MSA<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>IEEE 802.3bm<br><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u01b0\u01a1ng th\u00edch<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Kh\u00f4ng t\u01b0\u01a1ng th\u00edch tr\u1ef1c ti\u1ebfp<\/strong> v\u1edbi LR4 \u274c<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Kh\u00f4ng t\u01b0\u01a1ng th\u00edch tr\u1ef1c ti\u1ebfp<\/strong> v\u1edbi CWDM4 \u274c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ed9ng l\u1ef1c ch\u00ednh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u1ed1i \u01b0u h\u00f3a chi ph\u00ed<\/strong>, Hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Y\u00eau c\u1ea7u v\u1ec1 t\u1ea7m xa<\/strong><\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 V\u00ec sao s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u1ea7m xa l\u1ea1i quan tr\u1ecdng (v\u00e0 khi n\u00e0o chi ph\u00ed chi\u1ebfm \u01b0u th\u1ebf)<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>T\u1ea7m xa 2 km c\u1ee7a b\u1ed9 thu ph\u00e1t CWDM4<\/strong> th\u01b0\u1eddng l\u00e0 ho\u00e0n h\u1ea3o trong c\u00e1c <strong>trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn<\/strong>. N\u1ebfu c\u00e1c li\u00ean k\u1ebft c\u1ee7a b\u1ea1n n\u1ed1i c\u00e1c t\u1ee7 rack trong c\u00f9ng m\u1ed9t h\u00e0ng ho\u1eb7c c\u00e1c h\u00e0ng li\u1ec1n k\u1ec1 trong c\u00f9ng m\u1ed9t ph\u00f2ng, CWDM4 mang l\u1ea1i <strong>ti\u1ebft ki\u1ec7m \u0111\u00e1ng k\u1ec3<\/strong> b\u1eadt <strong>chi ph\u00ed m\u00f4-\u0111un quang h\u1ecdc<\/strong> m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m hi\u1ec7u n\u0103ng. \u0110i\u1ec1u n\u00e0y khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u cho <strong>tri\u1ec3n khai trung t\u00e2m d\u1eef li\u1ec7u kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn<\/strong> \u01b0u ti\u00ean <strong>t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO)<\/strong>. <strong>LINK-PP\u2019s <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472577.htm\"><strong>LQ-CW100-FR4C<\/strong><\/a> l\u00e0 nh\u00e0 d\u1eabn \u0111\u1ea7u th\u1ecb tr\u01b0\u1eddng \u1edf \u0111\u00e2y, cung c\u1ea5p \u0111\u1ed9 tin c\u1eady v\u1edbi m\u1ee9c gi\u00e1 t\u1ed1i \u01b0u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>T\u1ea7m xa 10 km c\u1ee7a m\u00f4-\u0111un LR4<\/strong> l\u00e0 thi\u1ebft y\u1ebfu khi k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u00f2a nh\u00e0, \u0111\u1ebfn <strong>v\u0103n ph\u00f2ng trung t\u00e2m<\/strong>, ho\u1eb7c trong m\u1ed9t <strong>m\u1ea1ng \u0111\u00f4 th\u1ecb<\/strong>. M\u1eb7c d\u00f9 <strong>gi\u00e1 th\u00e0nh m\u00f4-\u0111un quang h\u1ecdc<\/strong> cao h\u01a1n do y\u00eau c\u1ea7u laser ch\u00ednh x\u00e1c h\u01a1n, nh\u01b0ng n\u00f3 lo\u1ea1i b\u1ecf nhu c\u1ea7u s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 m\u1edf r\u1ed9ng t\u1ea7m xa (reach extenders) \u0111\u1eaft \u0111\u1ecf ho\u1eb7c c\u00e1c b\u01b0\u1edbc nh\u1ea3y m\u1ea1ng b\u1ed5 sung cho nh\u1eefng kho\u1ea3ng c\u00e1ch d\u00e0i h\u01a1n n\u00e0y. \u0110\u1ed1i v\u1edbi vi\u1ec7c <strong>truy\u1ec1n d\u1eabn quang s\u1ee3i c\u1ef1 ly d\u00e0i<\/strong>, <strong>LINK-PP\u2019s <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472118.htm\"><strong>LQ-LW100-LR4C<br><\/strong><\/a> cung c\u1ea5p hi\u1ec7u n\u0103ng c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2705 T\u1ed5ng k\u1ebft ch\u00ednh &amp; N\u00ean ch\u1ecdn lo\u1ea1i n\u00e0o<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>C\u1ea7n \u2264 2 km trong trung t\u00e2m d\u1eef li\u1ec7u? Ch\u1ecdn CWDM4.<\/strong> \u0110\u00e2y l\u00e0 <strong>Khi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, c\u00e1c k\u1ebft n\u1ed1i li\u00ean h\u1ec7 d\u1ef1a tr\u00ean \u0111\u1ed3ng v\u1eabn l\u00e0 m\u1ed9t<\/strong>, <strong>gi\u1ea3i ph\u00e1p ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng<\/strong> ch\u1ee7 l\u1ef1c cho <strong>thi\u1ebft y\u1ebfu cho<\/strong>, <strong>m\u1ea1ng l\u01b0\u1edbi quy m\u00f4 l\u1edbn (webscale networking)<\/strong>, and <strong>trung t\u00e2m d\u1eef li\u1ec7u doanh nghi\u1ec7p<\/strong> ki\u1ebfn tr\u00fac spine-leaf. T\u1ed1i \u0111a h\u00f3a ng\u00e2n s\u00e1ch c\u1ee7a b\u1ea1n m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u00e1nh \u0111\u1ed5i.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>C\u1ea7n l\u00ean \u0111\u1ebfn 10 km (khu\u00f4n vi\u00ean, \u0111\u00f4 th\u1ecb, li\u00ean k\u1ebft gi\u1eefa c\u00e1c t\u00f2a nh\u00e0)? Ch\u1ecdn LR4.<\/strong> T\u1ea7m xa d\u00e0i h\u01a1n c\u1ee7a n\u00f3 l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c trong c\u00e1c t\u00ecnh hu\u1ed1ng n\u00e0y, bi\u1ec7n minh cho chi ph\u00ed cao h\u01a1n <strong>gi\u00e1 th\u00e0nh m\u00f4-\u0111un quang h\u1ecdc<\/strong>. Thi\u1ebft y\u1ebfu cho <strong>\u1ee9ng d\u1ee5ng vi\u1ec5n th\u00f4ng<\/strong> and <strong>li\u00ean k\u1ebft n\u1ed9i b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u m\u1edf r\u1ed9ng<\/strong>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c:<\/strong> C\u00e1c m\u00f4-\u0111un CWDM4 v\u00e0 LR4 <strong>KH\u00d4NG t\u01b0\u01a1ng th\u00edch ki\u1ec3u c\u1eafm-nh\u1eadn (plug-and-play)<\/strong>. \u0110\u1ea3m b\u1ea3o c\u1ea3 hai \u0111\u1ea7u c\u1ee7a m\u1ed9t li\u00ean k\u1ebft \u0111\u1ec1u s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t <em>BER.<\/em> c\u00f4ng ngh\u1ec7 (CWDM4-CWDM4 ho\u1eb7c LR4-LR4).<\/p><\/li><li><p style=\"margin: 0px;\"><strong>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang:<\/strong> C\u1ea3 hai \u0111\u1ec1u y\u00eau c\u1ea7u c\u00e1p n\u1ed1i s\u1ee3i quang <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-single-mode-fiber-and-how-does-it-work\/\"><strong>\u0111\u01a1n mode ti\u00eau chu\u1ea9n<\/strong><\/a>. Vi\u1ec7c l\u1ef1a ch\u1ecdn kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn lo\u1ea1i c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng s\u1ee3i quang n\u1ec1n t\u1ea3ng c\u1ee7a b\u1ea1n, ch\u1ec9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ea7m xa m\u00e0 n\u00f3 h\u1ed7 tr\u1ee3.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 LINK-PP: \u0110\u1ed1i t\u00e1c c\u1ee7a b\u1ea1n cho c\u00e1c b\u1ed9 quang 100G hi\u1ec7u n\u0103ng cao<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 b\u1ea1n c\u1ea7n <strong>hi\u1ec7u qu\u1ea3 t\u1ed1i \u01b0u chi ph\u00ed<\/strong> c\u1ee7a <strong>CWDM4<\/strong> cho kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn <strong>m\u1edf r\u1ed9ng trung t\u00e2m d\u1eef li\u1ec7u<\/strong> ho\u1eb7c ph\u1ea1m vi <strong>m\u1edf r\u1ed9ng<\/strong> c\u1ee7a <strong>LR4<\/strong> cho <strong>k\u1ebft n\u1ed1i \u0111\u00f4 th\u1ecb<\/strong>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a> cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p QSFP28 \u0111\u00e1ng tin c\u1eady, ch\u1ea5t l\u01b0\u1ee3ng cao. C\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i <strong>100G CWDM4<\/strong> and <strong>100G LR4<\/strong> \u0111\u01b0\u1ee3c ki\u1ec3m tra nghi\u00eam ng\u1eb7t nh\u1eb1m \u0111\u1ea3m b\u1ea3o t\u00edch h\u1ee3p v\u00e0 hi\u1ec7u n\u0103ng <strong>100g qsfp28<\/strong> li\u1ec1n m\u1ea1ch.<\/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\/cd078f459da94d85a63b16ca949eeab4.webp\" alt=\"100G optical transceivers\" class=\"wp-image-6943\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd078f459da94d85a63b16ca949eeab4.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd078f459da94d85a63b16ca949eeab4-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd078f459da94d85a63b16ca949eeab4-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd078f459da94d85a63b16ca949eeab4-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/cd078f459da94d85a63b16ca949eeab4-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u1eb5n s\u00e0ng t\u1ed1i \u01b0u h\u00f3a m\u1ea1ng 100G c\u1ee7a b\u1ea1n?<\/strong> \u2709\ufe0f<br\/><strong>T\u01b0 v\u1ea5n c\u00f9ng chuy\u00ean gia LINK-PP ngay h\u00f4m nay!<\/strong> Ch\u00fang t\u00f4i s\u1ebd gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn b\u1ed9 thu ph\u00e1t <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\"><strong>100G ph\u00f9 h\u1ee3p nh\u1ea5t<\/strong><\/a> \u2013 d\u00f9 \u0111\u00f3 l\u00e0 <strong>CWDM4<\/strong>, <strong>LR4<\/strong>, hay c\u00e1c c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn kh\u00e1c <strong>s\u1ee3i quang hi\u1ec7u su\u1ea5t cao<\/strong> \u2013 nh\u1eb1m \u0111\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng, \u0111\u1ed9 tin c\u1eady v\u00e0 gi\u00e1 tr\u1ecb t\u1ed1i \u0111a cho nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n <strong>Qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra c\u1ef1c k\u1ef3 nhanh ch\u00f3ng, nh\u1edd v\u00e0o k\u1ebft n\u1ed1i trung t\u00e2m d\u1eef li\u1ec7u b\u0103ng th\u00f4ng cao<\/strong> c\u1ea7n thi\u1ebft. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/sample.htm\"><strong>Nh\u1eadn b\u00e1o gi\u00e1 ho\u1eb7c y\u00eau c\u1ea7u m\u1eabu ngay \u279e<\/strong><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\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<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa CWDM4 100G v\u00e0 LR4 100G l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n s\u1ebd th\u1ea5y r\u1eb1ng CWDM4 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t \u1edf kho\u1ea3ng c\u00e1ch ng\u1eafn \u0111\u1ebfn trung b\u00ecnh, l\u00ean t\u1edbi 2 km. LR4 h\u1ed7 tr\u1ee3 kho\u1ea3ng c\u00e1ch xa h\u01a1n, l\u00ean t\u1edbi 10 km. LR4 s\u1eed d\u1ee5ng laser m\u1ea1nh h\u01a1n v\u00e0 c\u00f3 chi ph\u00ed cao h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00f4i c\u00f3 c\u1ea7n thi\u1ebft b\u1ecb \u0111\u1eb7c bi\u1ec7t cho module CWDM4 ho\u1eb7c LR4 kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ea7u h\u1ebft c\u00e1c switch v\u00e0 router hi\u1ec7n \u0111\u1ea1i \u0111\u1ec1u h\u1ed7 tr\u1ee3 CWDM4. LR4 \u0111\u00f4i khi c\u1ea7n thi\u1ebft b\u1ecb \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 truy\u1ec1n \u1edf kho\u1ea3ng c\u00e1ch xa. Lu\u00f4n ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a thi\u1ebft b\u1ecb tr\u01b0\u1edbc khi mua.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u1ea1i sao CWDM4 y\u00eau c\u1ea7u FEC?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CWDM4 c\u1ea7n <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/fec-forward-error-correction-in-optical-communication\/\"><strong>S\u1eeda l\u1ed7i ti\u1ebfn (FEC)<\/strong><\/a> \u0111\u1ec3 s\u1eeda c\u00e1c l\u1ed7i trong qu\u00e1 tr\u00ecnh truy\u1ec1n d\u1eef li\u1ec7u. FEC gi\u00fap gi\u1eef an to\u00e0n v\u00e0 \u0111\u1ed9 tin c\u1eady cho d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n, \u0111\u1eb7c bi\u1ec7t tr\u00ean c\u00e1c k\u1ebft n\u1ed1i d\u00e0i h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ed3ng th\u1eddi c\u00e1c module CWDM4 v\u00e0 LR4 trong m\u1ed9t m\u1ea1ng kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u1ea3 hai lo\u1ea1i module n\u00e0y trong c\u00f9ng m\u1ed9t m\u1ea1ng n\u1ebfu thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n h\u1ed7 tr\u1ee3 ch\u00fang. H\u00e3y \u0111\u1ea3m b\u1ea3o m\u1ed7i k\u1ebft n\u1ed1i s\u1eed d\u1ee5ng \u0111\u00fang lo\u1ea1i module ph\u00f9 h\u1ee3p v\u1edbi kho\u1ea3ng c\u00e1ch v\u00e0 y\u00eau c\u1ea7u c\u1ee7a n\u00f3.<\/p>","protected":false},"excerpt":{"rendered":"<p>So s\u00e1nh c\u00e1c module 100G CWDM4 v\u00e0 LR4 cho s\u1ee3i quang \u0111\u01a1n mode: CWDM4 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c li\u00ean k\u1ebft ng\u1eafn \u0111\u1ebfn trung b\u00ecnh, trong khi LR4 v\u01b0\u1ee3t tr\u1ed9i \u1edf c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch xa v\u00e0 \u0111\u1ed9 tin c\u1eady cao.<\/p>","protected":false},"author":1,"featured_media":6942,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[13],"class_list":["post-6944","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-100g-modules"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/6944","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=6944"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/6944\/revisions"}],"predecessor-version":[{"id":11243,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/6944\/revisions\/11243"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/6942"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=6944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=6944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=6944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}