{"id":5134,"date":"2025-09-10T00:00:00","date_gmt":"2025-09-10T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/qsfp-40g-sr4-performance-applications-and-compatibility\/"},"modified":"2026-06-22T07:30:13","modified_gmt":"2026-06-22T07:30:13","slug":"qsfp-40g-sr4-performance-applications-and-compatibility","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/qsfp-40g-sr4-performance-applications-and-compatibility","title":{"rendered":"B\u1ed9 thu ph\u00e1t QSFP+ 40G SR4: \u201cC\u00f4ng c\u1ee5 ch\u1ee7 l\u1ef1c\u201d c\u1ee7a Ethernet 40 Gigabit"},"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\/bc7890e14e1448048d1649e2dca82a6d.webp\" alt=\"What You Should Know About QSFP+ 40G SR4 Performance\" class=\"wp-image-5132\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bc7890e14e1448048d1649e2dca82a6d.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bc7890e14e1448048d1649e2dca82a6d-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bc7890e14e1448048d1649e2dca82a6d-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bc7890e14e1448048d1649e2dca82a6d-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bc7890e14e1448048d1649e2dca82a6d-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ebf gi\u1edbi \u0111\u1ea7y r\u1ee7i ro cao c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng doanh nghi\u1ec7p, t\u1ed1c \u0111\u1ed9 l\u00e0 t\u1ea5t c\u1ea3. Khi nhu c\u1ea7u v\u1ec1 b\u0103ng th\u00f4ng t\u0103ng v\u1ecdt, vi\u1ec7c n\u00e2ng c\u1ea5p t\u1eeb 10G l\u00ean 40G kh\u00f4ng c\u00f2n l\u00e0 m\u1ed9t \u0111\u1eb7c quy\u1ec1n\u2014m\u00e0 \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c. Trung t\u00e2m c\u1ee7a s\u1ef1 chuy\u1ec3n \u0111\u1ed5i n\u00e0y l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n m\u1ea1nh m\u1ebd nh\u01b0ng th\u01b0\u1eddng b\u1ecb b\u1ecf qua: <br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482749.htm\"><strong>B\u1ed9 thu ph\u00e1t quang QSFP+ 40G SR4<br><\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n l\u00e0 qu\u1ea3n l\u00fd CNTT, k\u1ef9 s\u01b0 m\u1ea1ng ho\u1eb7c \u0111\u01a1n gi\u1ea3n l\u00e0 m\u1ed9t ng\u01b0\u1eddi \u0111am m\u00ea c\u00f4ng ngh\u1ec7, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00f4ng ngh\u1ec7 n\u00e0y l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd l\u00e0m r\u00f5 kh\u00e1i ni\u1ec7m v\u1ec1<br> <strong>QSFP+ 40G SR4<br><\/strong>, kh\u00e1m ph\u00e1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng, n\u01a1i \u1ee9ng d\u1ee5ng v\u00e0 l\u00fd do v\u00ec sao n\u00f3 v\u1eabn l\u00e0 l\u1ef1c l\u01b0\u1ee3ng th\u1ed1ng tr\u1ecb trong l\u0129nh v\u1ef1c<br> <strong>k\u1ebft n\u1ed1i Ethernet 40G<br><\/strong>.<\/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>The <strong>B\u1ed9 thu ph\u00e1t quang QSFP+ 40G SR4<br><\/strong> c\u00f3 th\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u r\u1ea5t nhanh, l\u00ean \u0111\u1ebfn 40 Gbps. \u0110i\u1ec1u n\u00e0y khi\u1ebfn n\u00f3 r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn v\u00e0 m\u1ea1ng doanh nghi\u1ec7p.<br>.<\/p><\/li><li><p>B\u1ea1n c\u00f3 th\u1ec3 l\u1eafp \u0111\u1eb7t ho\u1eb7c thay th\u1ebf b\u1ed9 thu ph\u00e1t n\u00e0y khi m\u1ea1ng \u0111ang ho\u1ea1t \u0111\u1ed9ng. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n kh\u00f4ng c\u1ea7n t\u1eaft b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb n\u00e0o. M\u1ea1ng c\u1ee7a b\u1ea1n ti\u1ebfp t\u1ee5c ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh.<br>.<\/p><\/li><li><p>B\u1ed9 thu ph\u00e1t truy\u1ec1n d\u1eef li\u1ec7u qua nhi\u1ec1u k\u00eanh \u0111\u1ed3ng th\u1eddi. \u0110i\u1ec1u n\u00e0y ng\u0103n ch\u1eb7n t\u00ecnh tr\u1ea1ng ch\u1eadm tr\u1ec5 v\u00e0 gi\u00fap m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 h\u01a1n.<br>.<\/p><\/li><li><p>N\u00f3 t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec1u thi\u1ebft b\u1ecb v\u00e0 c\u00e1c module c\u0169 h\u01a1n. \u0110i\u1ec1u n\u00e0y gi\u00fap vi\u1ec7c n\u00e2ng c\u1ea5p m\u1ea1ng c\u1ee7a b\u1ea1n tr\u1edf n\u00ean d\u1ec5 d\u00e0ng v\u00e0 k\u1ebft n\u1ed1i m\u1ecdi th\u1ee9 v\u1edbi nhau m\u1ed9t c\u00e1ch li\u1ec1n m\u1ea1ch.<br>.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\"><strong>Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (DDM)<\/strong><\/a> cho ph\u00e9p b\u1ea1n ki\u1ec3m tra ngay l\u1eadp t\u1ee9c t\u00ecnh tr\u1ea1ng s\u1ee9c kh\u1ecfe c\u1ee7a b\u1ed9 thu ph\u00e1t. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 s\u1edbm, tr\u01b0\u1edbc khi ch\u00fang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng.<br>.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 B\u1ed9 thu ph\u00e1t quang QSFP+ 40G SR4 l\u00e0 g\u00ec?<br><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y ph\u00e2n t\u00edch t\u00ean g\u1ecdi:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>QSFP+<\/strong>: \u0110\u1ee9ng cho<br> <strong>Quad Small Form-factor Pluggable Plus<br><\/strong>. T\u1eeb \u201cQuad\u201d (b\u1ed1n) cho bi\u1ebft n\u00f3 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 b\u1ed1n k\u00eanh truy\u1ec1n v\u00e0 nh\u1eadn d\u1eef li\u1ec7u \u0111\u1ed9c l\u1eadp.<br>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Y\u00eau c\u1ea7u c\u00e1p s\u1ee3i quang v\u00e0 c\u00f3 th\u1ec3 \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u cao h\u01a1n, nh\u01b0ng m\u1edf r\u1ed9ng hi\u1ec7u qu\u1ea3 h\u01a1n cho s\u1ef1 ph\u00e1t tri\u1ec3n m\u1ea1ng trong t\u01b0\u01a1ng lai.<\/strong>: Ch\u1ec9 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u l\u00e0<br> <strong>40 Gigabit m\u1ed7i gi\u00e2y<br><\/strong>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>SR4<\/strong>: Th\u1ec3 hi\u1ec7n<br> <strong>Kho\u1ea3ng C\u00e1ch Ng\u1eafn<\/strong> v\u1edbi <strong>4<\/strong> c\u00e1c k\u00eanh. N\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 truy\u1ec1n d\u1eabn \u1edf kho\u1ea3ng c\u00e1ch ng\u1eafn tr\u00ean<br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/om1-om2-om3-om4-om5-multimode-fiber-guide\/\"><strong>c\u00e1p quang \u0111a mode (MMF)<\/strong><\/a>.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 b\u1ea3n ch\u1ea5t, m\u1ed9t<br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482749.htm\"><strong>QSFP+ 40G SR4<br><\/strong><\/a> l\u00e0 m\u1ed9t m\u00f4-\u0111un quang nh\u1ecf g\u1ecdn, c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3ng (hot-swappable), c\u1eafm v\u00e0o b\u1ed9 chuy\u1ec3n m\u1ea1ch, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn ho\u1eb7c th\u1ebb giao di\u1ec7n m\u1ea1ng. N\u00f3 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh t\u00edn hi\u1ec7u quang v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, cho ph\u00e9p d\u1eef li\u1ec7u di chuy\u1ec3n qua<br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/fiber-optic-cable-what-it-is-and-how-it-works-explained\/\"><strong>c\u00e1p quang<\/strong><\/a> v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1ef1c cao.<br>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 C\u00f4ng ngh\u1ec7 40G SR4 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<br><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ed quy\u1ebft c\u1ee7a SR4 n\u1eb1m \u1edf kh\u1ea3 n\u0103ng x\u1eed l\u00fd song song (parallelism). Thay v\u00ec s\u1eed d\u1ee5ng m\u1ed9t k\u00eanh t\u1ed1c \u0111\u1ed9 cao duy nh\u1ea5t, n\u00f3 s\u1eed d\u1ee5ng b\u1ed1n<br> <strong>k\u00eanh 10G ri\u00eang bi\u1ec7t<br><\/strong> theo m\u1ed7i h\u01b0\u1edbng (truy\u1ec1n v\u00e0 nh\u1eadn). \u0110\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 quang h\u1ecdc song song (parallel optics).<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 quy tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\">B\u1ed9 thu ph\u00e1t nh\u1eadn m\u1ed9t t\u00edn hi\u1ec7u \u0111i\u1ec7n 40G duy nh\u1ea5t t\u1eeb thi\u1ebft b\u1ecb m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p><\/li><li><p style=\"margin: 0px;\">N\u00f3 chia (gh\u00e9p k\u00eanh) t\u00edn hi\u1ec7u n\u00e0y th\u00e0nh b\u1ed1n k\u00eanh 10G.<\/p><\/li><li><p style=\"margin: 0px;\">M\u1ed7i k\u00eanh 10G \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh t\u00edn hi\u1ec7u quang v\u00e0 truy\u1ec1n ra ngo\u00e0i qua m\u1ed9t trong b\u1ed1n c\u1ed5ng chuy\u00ean d\u1ee5ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/overview-of-vcsel\/\"><strong>VCSEL (Laser ph\u00e1t x\u1ea1 b\u1ec1 m\u1eb7t khoang d\u1ecdc)<\/strong><\/a> .<\/p><\/li><li><p style=\"margin: 0px;\">B\u1ed1n t\u00edn hi\u1ec7u quang n\u00e0y truy\u1ec1n \u0111i d\u1ecdc theo <strong>c\u00e1p s\u1ee3i quang \u0111a mode OM3 ho\u1eb7c OM4<\/strong> th\u00f4ng qua \u0111\u1ea7u n\u1ed1i MPO\/MTP.<\/p><\/li><li><p style=\"margin: 0px;\">\u1ede \u0111\u1ea7u thu, m\u1ed9t m\u00f4-\u0111un QSFP+ SR4 kh\u00e1c nh\u1eadn b\u1ed1n t\u00edn hi\u1ec7u, chuy\u1ec3n ch\u00fang tr\u1edf l\u1ea1i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n v\u00e0 k\u1ebft h\u1ee3p ch\u00fang \u0111\u1ec3 t\u00e1i t\u1ea1o lu\u1ed3ng d\u1eef li\u1ec7u 40G ban \u0111\u1ea7u.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch ti\u1ebfp c\u1eadn song song n\u00e0y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u0103ng th\u00f4ng cao.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 C\u00e1c \u1ee9ng d\u1ee5ng &amp; tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u00ednh<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The<strong> <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482749.htm\"><strong>QSFP+ 40G SR4<br><\/strong> <strong>b\u1ed9 thu ph\u00e1t<\/strong><\/a> c\u00f3 t\u00ednh linh ho\u1ea1t tuy\u1ec7t v\u1eddi, r\u1ea5t ph\u00f9 h\u1ee3p cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>T\u00edch h\u1ee3p trung t\u00e2m d\u1eef li\u1ec7u:<\/strong> K\u1ebft n\u1ed1i c\u00e1c switch \u0111\u1ea7u t\u1ee7 (ToR) v\u1edbi c\u00e1c switch cu\u1ed1i h\u00e0ng (EoR) ho\u1eb7c switch l\u00f5i.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>M\u00e1y t\u00ednh hi\u1ec7u n\u0103ng cao (HPC):<\/strong> Li\u00ean k\u1ebft c\u00e1c m\u00e1y ch\u1ee7 v\u00e0 c\u1ee5m m\u00e1y ch\u1ee7 y\u00eau c\u1ea7u th\u00f4ng l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn cho c\u00e1c t\u00e1c v\u1ee5 nh\u01b0 m\u00f4 h\u00ecnh h\u00f3a AI v\u00e0 m\u00f4 ph\u1ecfng khoa h\u1ecdc.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>N\u00e2ng c\u1ea5p m\u1ea1ng Ethernet 40G:<\/strong> Gi\u1ea3i ph\u00e1p ho\u00e0n h\u1ea3o cho c\u00e1c doanh nghi\u1ec7p chuy\u1ec3n t\u1eeb h\u1ea1 t\u1ea7ng SFP+ 10G sang h\u1ea1 t\u1ea7ng QSFP+ 40G.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>K\u1ebft n\u1ed1i ph\u00e2n nh\u00e1nh (breakout):<\/strong> M\u1ed9t trong nh\u1eefng t\u00ednh n\u0103ng m\u1ea1nh m\u1ebd nh\u1ea5t c\u1ee7a n\u00f3 l\u00e0 <strong>ch\u1ee9c n\u0103ng ph\u00e2n nh\u00e1nh (breakout)<\/strong>. M\u1ed9t c\u1ed5ng SR4 40G duy nh\u1ea5t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh b\u1ed1n k\u1ebft n\u1ed1i SFP+ 10G \u0111\u1ed9c l\u1eadp b\u1eb1ng c\u00e1p ph\u00e2n nh\u00e1nh \u0111\u1eb7c bi\u1ec7t, cung c\u1ea5p l\u1ed9 tr\u00ecnh m\u1edf r\u1ed9ng m\u1ea1ng hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 So s\u00e1nh nhanh: QSFP-40G-SR4 so v\u1edbi c\u00e1c m\u00f4-\u0111un 40G kh\u00e1c<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c m\u00f4-\u0111un 40G \u0111\u1ec1u gi\u1ed1ng nhau. L\u1ef1a ch\u1ecdn \u0111\u00fang ph\u1ee5 thu\u1ed9c v\u00e0o kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn v\u00e0 lo\u1ea1i s\u1ee3i quang b\u1ea1n s\u1eed d\u1ee5ng.<\/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>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482749.htm\"><strong>(40GBASE-SR4)<\/strong><\/a> (Ph\u1ea1m vi ng\u1eafn)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482487.htm\"><strong>QSFP-40G-LR4<\/strong><\/a> (Ph\u1ea1m vi xa)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472716.htm\"><strong>QSFP-40G-ER4<\/strong><\/a> (Ph\u1ea1m vi m\u1edf r\u1ed9ng)<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>10km, 20km, 40km<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 100 m (OM4) \/ 150 m (OM4)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean t\u1edbi 10 km<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 40 km<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Lo\u1ea1i s\u1ee3i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Multi-Mode (OM3\/OM4)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i \u0111\u01a1n mode (OS2)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i \u0111\u01a1n mode (OS2)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>C\u00f4ng ngh\u1ec7 laser<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Laser VCSEL.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>DWDM CWDM<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>DWML EML<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gi\u00e1 \u0111\u1ee1 trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft khu\u00f4n vi\u00ean\/city<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Truy\u1ec1n th\u00f4ng vi\u1ec5n th\u00f4ng t\u1ea7m xa<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Cost<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>$$ (Th\u1ea5p nh\u1ea5t)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>$$$<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>$$$$ (Cao nh\u1ea5t)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 T\u1ea1i sao n\u00ean ch\u1ecdn m\u00f4-\u0111un LINK-PP QSFP+ 40G SR4?<\/strong><\/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\/060a9f31d2504e1994f380c831bcd247.webp\" alt=\"QSFP+ 40G SR4 Optical transceiver\" class=\"wp-image-5133\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/060a9f31d2504e1994f380c831bcd247.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/060a9f31d2504e1994f380c831bcd247-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/060a9f31d2504e1994f380c831bcd247-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/060a9f31d2504e1994f380c831bcd247-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/060a9f31d2504e1994f380c831bcd247-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1ef1a ch\u1ecdn b\u1ed9 thu ph\u00e1t, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u n\u0103ng l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 b\u1eaft bu\u1ed9c. \u0110\u00e2y ch\u00ednh l\u00e0 l\u0129nh v\u1ef1c <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/page\/aboutus.htm\"><strong>LINK-PP<\/strong><\/a> LINK-PP v\u01b0\u1ee3t tr\u1ed9i. C\u00e1c b\u1ed9 thu ph\u00e1t quang c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 ti\u00eau chu\u1ea9n c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb g\u1ed1c (OEM), \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t ho\u00e0n h\u1ea3o tr\u00ean thi\u1ebft b\u1ecb mang th\u01b0\u01a1ng hi\u1ec7u c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a m\u00f4-\u0111un LINK-PP 40G SR4:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>100% T\u01b0\u01a1ng th\u00edch v\u1edbi ti\u00eau chu\u1ea9n MSA:<\/strong> \u0110\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c th\u01b0\u01a1ng hi\u1ec7u switch h\u00e0ng \u0111\u1ea7u (Cisco, Juniper, Arista, v.v.).<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Ki\u1ec3m tra nghi\u00eam ng\u1eb7t:<\/strong> M\u1ed7i module, bao g\u1ed3m c\u1ea3 model ph\u1ed5 bi\u1ebfn c\u1ee7a ch\u00fang t\u00f4i, <strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482749.htm\"><strong>LQ-M8540-SR4C<\/strong><\/a> \u0111\u1ec1u tr\u1ea3i qua qu\u00e1 tr\u00ecnh ki\u1ec3m tra nghi\u00eam ng\u1eb7t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u v\u00e0 \u0111\u1ed9 tr\u1ec5 th\u1ea5p. <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-what-is-bit-error-rate\/\"><strong>T\u1ef7 l\u1ec7 l\u1ed7i bit (BER)<\/strong><\/a>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Chi ph\u00ed hi\u1ec7u qu\u1ea3:<\/strong> Ti\u1ebft ki\u1ec7m l\u00ean \u0111\u1ebfn 80% so v\u1edbi gi\u00e1 s\u1ea3n ph\u1ea9m g\u1ed1c (OEM) m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng hay ch\u1ee9c n\u0103ng.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>B\u1ea3o h\u00e0nh tr\u1ecdn \u0111\u1eddi:<\/strong> Ch\u00fang t\u00f4i cam k\u1ebft h\u1ed7 tr\u1ee3 s\u1ea3n ph\u1ea9m b\u1eb1ng d\u1ecbch v\u1ee5 kh\u00e1ch h\u00e0ng chuy\u00ean nghi\u1ec7p v\u00e0 ch\u1ebf \u0111\u1ed9 b\u1ea3o h\u00e0nh to\u00e0n di\u1ec7n.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi nh\u1eefng ai \u0111ang t\u00ecm ki\u1ebfm m\u1ed9t <strong>gi\u1ea3i ph\u00e1p t\u01b0\u01a1ng th\u00edch QSFP SR4 40G ch\u1ea5t l\u01b0\u1ee3ng cao<\/strong> m\u00e0 kh\u00f4ng g\u00e2y \u00e1p l\u1ef1c l\u00ean ng\u00e2n s\u00e1ch, <strong>LINK-PP<\/strong> cung c\u1ea5p s\u1ef1 c\u00e2n b\u1eb1ng ho\u00e0n h\u1ea3o gi\u1eefa hi\u1ec7u su\u1ea5t v\u00e0 gi\u00e1 tr\u1ecb. D\u00f9 b\u1ea1n c\u1ea7n m\u1ed9t module chu\u1ea9n <strong>40gbe sr4<\/strong> hay \u0111ang xem x\u00e9t c\u00e1c l\u1ef1a ch\u1ecdn <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\"><strong>b\u1ed9 thu ph\u00e1t quang 40G<\/strong><\/a> cho tri\u1ec3n khai m\u1edbi, ch\u00fang t\u00f4i \u0111\u1ec1u \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 K\u1ebft lu\u1eadn: QSFP+ 40G SR4 c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi b\u1ea1n kh\u00f4ng?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482749.htm\"><strong>B\u1ed9 thu ph\u00e1t quang QSFP+ 40G SR4<br><\/strong><\/a> v\u1eabn l\u00e0 n\u1ec1n t\u1ea3ng thi\u1ebft y\u1ebfu trong thi\u1ebft k\u1ebf trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i. Thi\u1ebft k\u1ebf quang h\u1ecdc song song hi\u1ec7u qu\u1ea3, kh\u1ea3 n\u0103ng chia nh\u00e1nh (breakout) v\u00e0 t\u00ednh kinh t\u1ebf khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn th\u00f4ng minh tuy\u1ec7t v\u1eddi cho <strong>c\u00e1c \u1ee9ng d\u1ee5ng 40G kho\u1ea3ng c\u00e1ch ng\u1eafn<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1eadp k\u1ebf ho\u1ea1ch c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng, vi\u1ec7c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady cho module <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>b\u1ed9 ph\u00e1t thu quang s\u1ee3i quang<\/strong><\/a> l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a> cam k\u1ebft cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p hi\u1ec7u su\u1ea5t cao, t\u01b0\u01a1ng th\u00edch v\u00e0 gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n lu\u00f4n \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i tr\u01a1n tru.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u1eb5n s\u00e0ng n\u00e2ng c\u1ea5p m\u1ea1ng c\u1ee7a b\u1ea1n v\u1edbi kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i 40G \u0111\u00e1ng tin c\u1eady ch\u01b0a?<\/strong> \ud83d\udd17<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Duy\u1ec7t qua b\u1ed9 s\u01b0u t\u1eadp r\u1ed9ng l\u1edbn c\u00e1c module \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn c\u1ee7a ch\u00fang t\u00f4i <strong>LINK-PP QSFP+ 40G SR4<\/strong> ngay h\u00f4m nay. C\u00e1c chuy\u00ean gia c\u1ee7a ch\u00fang t\u00f4i lu\u00f4n s\u1eb5n s\u00e0ng h\u1ed7 tr\u1ee3 b\u1ea1n t\u00ecm \u0111\u00fang module quang t\u01b0\u01a1ng th\u00edch cho nhu c\u1ea7u c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udc49<br> <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/message.htm\"><strong>Mua ngay LINK-PP LQ-M8540-SR4C &amp; Ti\u1ebft ki\u1ec7m!<\/strong><\/a> \ud83d\udc48<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 c\u00e2u h\u1ecfi c\u1ee5 th\u1ec3 v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch? <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/support.htm\"><strong>Li\u00ean h\u1ec7 \u0111\u1ed9i ng\u0169 h\u1ed7 tr\u1ee3 c\u1ee7a ch\u00fang t\u00f4i<\/strong><\/a> \u0111\u1ec3 c\u00f3 tr\u1ea3i nghi\u1ec7m mua s\u1eafm li\u1ec1n m\u1ea1ch<\/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\" >Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a c\u1ee7a module QSFP+ 40G SR4 l\u00e0 bao nhi\u00eau?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Module QSFP+ 40G SR4 c\u00f3 th\u1ec3 \u0111\u1ea1t kho\u1ea3ng c\u00e1ch 100 m\u00e9t v\u1edbi c\u00e1p quang \u0111a mode OM3. V\u1edbi c\u00e1p quang \u0111a mode OM4, kho\u1ea3ng c\u00e1ch n\u00e0y c\u00f3 th\u1ec3 l\u00ean t\u1edbi 150 m\u00e9t. Nh\u1eefng module n\u00e0y ph\u00f9 h\u1ee3p nh\u1ea5t cho c\u00e1c k\u1ebft n\u1ed1i ng\u1eafn trong trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Thi\u1ebft b\u1ecb n\u00e0o h\u1ed7 tr\u1ee3 b\u1ed9 thu ph\u00e1t quang QSFP+ 40G SR4?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ed9 thu ph\u00e1t quang QSFP+ 40G SR4 tr\u00ean c\u00e1c switch, router v\u00e0 m\u00e1y ch\u1ee7 m\u1edbi. Thi\u1ebft b\u1ecb ph\u1ea3i c\u00f3 c\u1ed5ng QSFP+. Lu\u00f4n ki\u1ec3m tra danh s\u00e1ch thi\u1ebft b\u1ecb t\u01b0\u01a1ng th\u00edch tr\u01b0\u1edbc khi mua.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Lo\u1ea1i c\u00e1p n\u00e0o c\u1ea7n d\u00f9ng cho QSFP+ 40G SR4?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u1ea7n c\u00e1p quang \u0111a mode c\u00f3 \u0111\u1ea7u n\u1ed1i MPO. Nh\u1eefng c\u00e1p n\u00e0y gi\u00fap truy\u1ec1n d\u1eef li\u1ec7u nhanh ch\u00f3ng v\u00e0 duy tr\u00ec hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh cho module c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (DDM) hi\u1ec3n th\u1ecb nh\u1eefng th\u00f4ng tin g\u00ec?<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>DDM cung c\u1ea5p cho b\u1ea1n c\u00e1c chi ti\u1ebft th\u1eddi gian th\u1ef1c v\u1ec1 module. B\u1ea1n c\u00f3 th\u1ec3 theo d\u00f5i nhi\u1ec7t \u0111\u1ed9, \u0111i\u1ec7n \u00e1p, c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u v\u00e0 s\u1ed1 l\u1ea7n l\u1ed7i. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 s\u1edbm v\u00e0 duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh c\u1ee7a m\u1ea1ng.<\/p><\/blockquote>","protected":false},"excerpt":{"rendered":"<p>QSFP+ 40G SR4 mang l\u1ea1i hi\u1ec7u n\u0103ng 40 Gbps \u1ed5n \u0111\u1ecbnh, kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i t\u1ea7m ng\u1eafn v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch m\u1ea1nh m\u1ebd cho c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng doanh nghi\u1ec7p.<\/p>","protected":false},"author":1,"featured_media":5132,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[18],"class_list":["post-5134","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-40g-qsfp-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5134","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=5134"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5134\/revisions"}],"predecessor-version":[{"id":11155,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5134\/revisions\/11155"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/5132"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=5134"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=5134"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=5134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}