{"id":5210,"date":"2025-09-05T00:00:00","date_gmt":"2025-09-05T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/dispersion-in-optical-transceiver-signal-clarity-and-management\/"},"modified":"2026-06-22T07:44:12","modified_gmt":"2026-06-22T07:44:12","slug":"dispersion-in-optical-transceiver-signal-clarity-and-management","status":"publish","type":"post","link":"https:\/\/resources.l-p.com\/vi\/knowledge-center\/dispersion-in-optical-transceiver-signal-clarity-and-management","title":{"rendered":"Gi\u1ea3i th\u00edch v\u1ec1 s\u1ef1 t\u00e1n s\u1eafc quang h\u1ecdc: Ki\u1ec3m so\u00e1t xung \u00e1nh s\u00e1ng"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/41b6ea1448644ddbb14db63334efee91.webp\" alt=\"What You Need to Know About Dispersion in Optical Transceivers\" class=\"wp-image-5206\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/41b6ea1448644ddbb14db63334efee91.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/41b6ea1448644ddbb14db63334efee91-300x178.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/41b6ea1448644ddbb14db63334efee91-1024x608.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/41b6ea1448644ddbb14db63334efee91-768x456.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/41b6ea1448644ddbb14db63334efee91-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ebf gi\u1edbi truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao, \u00e1nh s\u00e1ng l\u00e0 ng\u01b0\u1eddi chuy\u1ec3n ph\u00e1t nhanh nh\u1ea5t. Nh\u01b0ng ngay c\u1ea3 \u00e1nh s\u00e1ng c\u0169ng kh\u00f4ng ho\u00e0n h\u1ea3o. Khi c\u00e1c xung \u00e1nh s\u00e1ng di chuy\u1ec3n d\u1ecdc theo m\u1ed9t <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/vi\/knowledge-center\/fiber-optic-cable-what-it-is-and-how-it-works-explained\/\"><strong>fiber optic cable<\/strong><\/a>, ch\u00fang c\u00f3 th\u1ec3 b\u1ecb k\u00e9o d\u00e0i, bi\u1ebfn d\u1ea1ng v\u00e0 m\u1edd \u0111i. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>s\u1ef1 t\u00e1n s\u1eafc quang h\u1ecdc s\u1ee3i<\/strong>, l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c c\u01a1 b\u1ea3n m\u00e0 k\u1ef9 s\u01b0 m\u1ea1ng ph\u1ea3i kh\u1eafc ph\u1ee5c \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 nhanh h\u01a1n v\u00e0 kho\u1ea3ng c\u00e1ch xa h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng nh\u01b0 m\u1ed9t nh\u00f3m v\u1eadn \u0111\u1ed9ng vi\u00ean c\u00f9ng xu\u1ea5t ph\u00e1t trong m\u1ed9t cu\u1ed9c \u0111ua v\u00e0o \u0111\u00fang kho\u1ea3nh kh\u1eafc. \u0110\u1ebfn cu\u1ed1i cu\u1ed9c \u0111ua, m\u1ed9t s\u1ed1 ng\u01b0\u1eddi \u0111\u00e3 \u1edf ph\u00eda tr\u01b0\u1edbc, s\u1ed1 kh\u00e1c th\u00ec t\u1ee5t l\u1ea1i ph\u00eda sau, v\u00e0 v\u1ea1ch xu\u1ea5t ph\u00e1t v\u1ed1n r\u00f5 n\u00e9t gi\u1edd \u0111\u00e2y \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t \u0111\u00e1m \u0111\u00f4ng nh\u00f2e nho\u00e0. T\u01b0\u01a1ng t\u1ef1 v\u1eady, hi\u1ec7n t\u01b0\u1ee3ng t\u00e1n s\u1eafc khi\u1ebfn c\u00e1c xung \u00e1nh s\u00e1ng lan r\u1ed9ng, c\u00f3 th\u1ec3 ch\u1ed3ng l\u1ea5n l\u00ean c\u00e1c xung li\u1ec1n k\u1ec1 v\u00e0 l\u00e0m sai l\u1ec7ch t\u00edn hi\u1ec7u d\u1eef li\u1ec7u t\u1ea1i \u0111\u1ea7u thu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i vi\u1ebft blog n\u00e0y s\u1ebd gi\u1ea3i th\u00edch r\u00f5 c\u00e1c lo\u1ea1i t\u00e1n s\u1eafc, t\u00e1c \u0111\u1ed9ng c\u1ee7a ch\u00fang \u0111\u1ebfn hi\u1ec7u n\u0103ng m\u1ea1ng c\u1ee7a b\u1ea1n, c\u0169ng nh\u01b0 vai tr\u00f2 thi\u1ebft y\u1ebfu c\u1ee7a c\u00e1c b\u1ed9 thu ph\u00e1t quang hi\u1ec7n \u0111\u1ea1i trong vi\u1ec7c ch\u1ed1ng l\u1ea1i hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 Key Takeaways<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00ecm hi\u1ec3u v\u1ec1 t\u00e1n s\u1eafc \u0111\u1ec3 gi\u1eef t\u00edn hi\u1ec7u m\u1ea1nh m\u1ebd. T\u00e1n s\u1eafc thay \u0111\u1ed5i c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n trong s\u1ee3i quang.<\/p><\/li><li><p>Ch\u1ecdn s\u1ee3i quang \u0111\u01a1n mode cho c\u00e1c kho\u1ea3ng c\u00e1ch xa. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m t\u00e1n s\u1eafc ch\u1ebf \u0111\u1ed9. Nh\u1edd \u0111\u00f3, t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c duy tr\u00ec t\u1ed1t.<\/p><\/li><li><p>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 \u0111\u1ec3 kh\u1eafc ph\u1ee5c v\u1ea5n \u0111\u1ec1 t\u00e1n s\u1eafc. C\u00e1c c\u00f4ng c\u1ee5 n\u00e0y h\u1ed7 tr\u1ee3 x\u1eed l\u00fd t\u00e1n s\u1eafc s\u1eafc th\u00e1i.<\/p><\/li><li><p>Ki\u1ec3m tra s\u1ee3i quang th\u01b0\u1eddng xuy\u00ean v\u00e0 t\u00ecm ki\u1ebfm l\u1ed7i. Ph\u00e1t hi\u1ec7n s\u1edbm v\u1ea5n \u0111\u1ec1 s\u1ebd ng\u0103n ch\u1eb7n c\u00e1c s\u1ef1 c\u1ed1 l\u1edbn h\u01a1n v\u1ec1 sau.<\/p><\/li><li><p>Ch\u1ecdn b\u01b0\u1edbc s\u00f3ng t\u1ed1i \u01b0u \u0111\u1ec3 gi\u1ea3m t\u00e1n s\u1eafc s\u1eafc th\u00e1i. M\u1ed9t s\u1ed1 b\u01b0\u1edbc s\u00f3ng truy\u1ec1n d\u1eef li\u1ec7u r\u00f5 r\u00e0ng h\u01a1n.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 Hai nguy\u00ean nh\u00e2n ch\u00ednh: T\u00e1n s\u1eafc s\u1eafc th\u00e1i &amp; T\u00e1n s\u1eafc ch\u1ebf \u0111\u1ed9 ph\u00e2n c\u1ef1c<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec3u r\u00f5 c\u00e1c lo\u1ea1i t\u00e1n s\u1eafc kh\u00e1c nhau l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a ch\u00fang. Ch\u00fang ch\u1ee7 y\u1ebfu chia th\u00e0nh hai lo\u1ea1i:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"412\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b90641d9a5c64b4d9a6bf25571d9e641.webp\" alt=\"Chromatic Dispersion\" class=\"wp-image-5207\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b90641d9a5c64b4d9a6bf25571d9e641.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b90641d9a5c64b4d9a6bf25571d9e641-300x103.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b90641d9a5c64b4d9a6bf25571d9e641-1024x352.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b90641d9a5c64b4d9a6bf25571d9e641-768x264.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b90641d9a5c64b4d9a6bf25571d9e641-18x6.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00e1n s\u1eafc s\u1eafc th\u00e1i (CD)<\/strong><br\/>\u0110\u00e2y l\u00e0 d\u1ea1ng ph\u1ed5 bi\u1ebfn nh\u1ea5t. N\u00f3 x\u1ea3y ra do c\u00e1c m\u00e0u s\u1eafc (b\u01b0\u1edbc s\u00f3ng) kh\u00e1c nhau c\u1ee7a \u00e1nh s\u00e1ng di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 h\u01a1i kh\u00e1c nhau qua s\u1ee3i th\u1ee7y tinh, ngay c\u1ea3 khi ch\u00fang thu\u1ed9c c\u00f9ng m\u1ed9t xung ban \u0111\u1ea7u. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1ch m\u1ed9t l\u0103ng k\u00ednh th\u1ee7y tinh t\u00e1ch \u00e1nh s\u00e1ng tr\u1eafng th\u00e0nh quang ph\u1ed5 c\u1ea7u v\u1ed3ng.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>T\u00e1n s\u1eafc v\u1eadt li\u1ec7u:<\/strong> G\u00e2y ra b\u1edfi c\u00e1c \u0111\u1eb7c t\u00ednh n\u1ed9i t\u1ea1i c\u1ee7a ch\u00ednh th\u1ee7y tinh silica.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>T\u00e1n s\u1eafc h\u01b0\u1edbng d\u1eabn s\u00f3ng:<\/strong> G\u00e2y ra b\u1edfi c\u1ea5u tr\u00fac v\u1eadt l\u00fd c\u1ee7a l\u00f5i s\u1ee3i quang, n\u01a1i d\u1eabn \u00e1nh s\u00e1ng.<\/p><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"396\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9296cfc6b9d546a88447b318bebb6cd7.webp\" alt=\"Polarization Mode Dispersion\" class=\"wp-image-5208\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9296cfc6b9d546a88447b318bebb6cd7.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9296cfc6b9d546a88447b318bebb6cd7-300x99.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9296cfc6b9d546a88447b318bebb6cd7-1024x338.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9296cfc6b9d546a88447b318bebb6cd7-768x253.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9296cfc6b9d546a88447b318bebb6cd7-18x6.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00e1n s\u1eafc ch\u1ebf \u0111\u1ed9 ph\u00e2n c\u1ef1c (PMD)<\/strong><br\/>\u0110\u00e2y l\u00e0 m\u1ed9t hi\u1ec7u \u1ee9ng ph\u1ee9c t\u1ea1p h\u01a1n, tr\u1edf n\u00ean \u0111\u00e1ng k\u1ec3 \u0111\u1eb7c bi\u1ec7t \u1edf t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao (10 Gbps tr\u1edf l\u00ean). S\u1ee3i quang kh\u00f4ng ho\u00e0n to\u00e0n \u0111\u1ed1i x\u1ee9ng. C\u00e1c khuy\u1ebft t\u1eadt c\u00f3 th\u1ec3 khi\u1ebfn s\u00f3ng \u00e1nh s\u00e1ng lan truy\u1ec1n \u1edf hai tr\u1ea1ng th\u00e1i ph\u00e2n c\u1ef1c (h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng nh\u01b0 hai h\u01b0\u1edbng dao \u0111\u1ed9ng). Hai tr\u1ea1ng th\u00e1i n\u00e0y di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 h\u01a1i kh\u00e1c nhau, d\u1eabn \u0111\u1ebfn s\u1ef1 lan r\u1ed9ng c\u1ee7a xung.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 T\u00e1c \u0111\u1ed9ng th\u1ef1c t\u1ebf: T\u1ea1i sao b\u1ea1n c\u1ea7n quan t\u00e2m?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00e1n s\u1eafc kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m l\u00fd thuy\u1ebft; n\u00f3 g\u00e2y ra nh\u1eefng h\u1ec7 qu\u1ea3 c\u1ee5 th\u1ec3 \u0111\u1ed1i v\u1edbi hi\u1ec7u n\u0103ng m\u1ea1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/vi\/glossary\/understanding-what-is-bit-error-rate\/\"><strong>L\u1ed7i bit (BER)<\/strong><\/a><strong>:<\/strong> S\u1ef1 lan r\u1ed9ng xung d\u1eabn \u0111\u1ebfn nhi\u1ec5u gi\u1eefa c\u00e1c k\u00fd hi\u1ec7u (ISI), trong \u0111\u00f3 m\u1ed9t k\u00fd hi\u1ec7u g\u00e2y nhi\u1ec5u k\u00fd hi\u1ec7u ti\u1ebfp theo, l\u00e0m t\u0103ng T\u1ef7 l\u1ec7 l\u1ed7i bit.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Th\u01b0\u1eddng b\u1ecb gi\u1edbi h\u1ea1n trong ph\u1ea1m vi v\u1ea3i m\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u, do ph\u1ee5 thu\u1ed9c v\u00e0o mi\u1ec1n Ethernet kh\u00f4ng m\u1ea5t g\u00f3i.<\/strong> C\u00e0ng d\u00e0i kho\u1ea3ng c\u00e1ch s\u1ee3i quang, hi\u1ec7u \u1ee9ng t\u00e1n s\u1eafc c\u00e0ng r\u00f5 r\u1ec7t, t\u1eeb \u0111\u00f3 gi\u1edbi h\u1ea1n hi\u1ec7u qu\u1ea3 kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a c\u1ee7a t\u00edn hi\u1ec7u m\u00e0 kh\u00f4ng c\u1ea7n t\u00e1i t\u1ea1o.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Gi\u1edbi h\u1ea1n b\u0103ng th\u00f4ng:<\/strong> Cu\u1ed1i c\u00f9ng, n\u00f3 gi\u1edbi h\u1ea1n t\u00edch b\u0103ng th\u00f4ng\u2013kho\u1ea3ng c\u00e1ch c\u1ee7a h\u1ec7 th\u1ed1ng s\u1ee3i quang, khi\u1ebfn b\u1ea1n kh\u00f4ng th\u1ec3 \u0111\u1ea9y nhi\u1ec1u d\u1eef li\u1ec7u h\u01a1n tr\u00ean c\u00e1c kho\u1ea3ng c\u00e1ch d\u00e0i h\u01a1n.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 Kh\u1eafc ph\u1ee5c t\u00e1n s\u1eafc: C\u00e1c gi\u1ea3i ph\u00e1p<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">May m\u1eafn thay, c\u00e1c gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt tuy\u1ec7t v\u1eddi \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n nh\u1eb1m ch\u1ed1ng l\u1ea1i t\u00e1n s\u1eafc:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>S\u1ee3i quang d\u1ecbch t\u00e1n s\u1eafc (DSF):<\/strong> C\u00e1c s\u1ee3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 d\u1ecbch chuy\u1ec3n b\u01b0\u1edbc s\u00f3ng t\u00e1n s\u1eafc b\u1eb1ng kh\u00f4ng sang c\u1eeda s\u1ed5 1550 nm (n\u01a1i suy hao th\u1ea5p nh\u1ea5t).<\/p><\/li><li><p style=\"margin: 0px;\"><strong>M\u00f4-\u0111un b\u00f9 t\u00e1n s\u1eafc (DCM):<\/strong> C\u00e1c cu\u1ed9n s\u1ee3i \u0111\u1eb7c bi\u1ec7t c\u00f3 \u0111\u1eb7c t\u00ednh t\u00e1n s\u1eafc ng\u01b0\u1ee3c chi\u1ec1u, v\u1ec1 c\u01a1 b\u1ea3n \u201ch\u1ee7y b\u1ecf\u201d hi\u1ec7u \u1ee9ng t\u00e1n s\u1eafc t\u00edch l\u0169y d\u1ecdc theo \u0111o\u1ea1n s\u1ee3i ch\u00ednh.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>B\u1ed9 thu ph\u00e1t quang ti\u00ean ti\u1ebfn:<\/strong> \u0110\u00e2y l\u00e0 n\u01a1i ph\u00e9p m\u00e0u c\u1ee7a c\u00f4ng ngh\u1ec7 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>module quang<br><\/strong><\/a> ph\u00e1t huy t\u00e1c d\u1ee5ng. <strong>quang h\u1ecdc \u0111\u1ed3ng pha<\/strong> and <strong>B\u00f9 t\u00e1n s\u1eafc \u0111i\u1ec7n t\u1eed (EDC)<\/strong> trong c\u00e1c chipset thu ph\u00e1t c\u00f3 th\u1ec3 x\u1eed l\u00fd v\u00e0 hi\u1ec7u ch\u1ec9nh k\u1ef9 thu\u1eadt s\u1ed1 c\u00e1c hi\u1ec7u \u1ee9ng t\u00e1n s\u1eafc.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 Vai tr\u00f2 c\u1ee7a c\u00e1c m\u00f4-\u0111un quang th\u00f4ng minh: H\u00e0ng ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean c\u1ee7a b\u1ea1n<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"719\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/591e9bb677644776a5473e662006c714.jpg\" alt=\"optical transceivers\" class=\"wp-image-5209\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/591e9bb677644776a5473e662006c714.jpg 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/591e9bb677644776a5473e662006c714-300x180.jpg 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/591e9bb677644776a5473e662006c714-1024x614.jpg 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/591e9bb677644776a5473e662006c714-768x460.jpg 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/591e9bb677644776a5473e662006c714-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 thu ph\u00e1t ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng. C\u00e1c b\u1ed9 thu ph\u00e1t hi\u1ec7n \u0111\u1ea1i <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26044-200-400-800g-transceiver-modules.htm\"><strong>C\u00e1c c\u00f4ng ty nh\u01b0<\/strong><\/a> kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 c\u00e1c ngu\u1ed3n ph\u00e1t \u00e1nh s\u00e1ng; ch\u00fang l\u00e0 nh\u1eefng thi\u1ebft b\u1ecb th\u00f4ng minh \u0111\u01b0\u1ee3c trang b\u1ecb <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/vi\/glossary\/digital-signal-processor-functionality-in-optical-transceivers\/\"><strong>ti\u00ean ti\u1ebfn<\/strong><\/a> <strong>(X\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1)<\/strong> chuy\u00ean d\u1ee5ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, b\u1ed9 thu ph\u00e1t <strong>M\u00f4-\u0111un c\u1eafm r\u1eddi \u0111\u1ed3ng pha 400G-ZR+<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1eed l\u00fd t\u00e1n s\u1eafc m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng. C\u00f4ng ngh\u1ec7 \u0111\u1ed3ng pha t\u00edch h\u1ee3p v\u00e0 c\u00e1c thu\u1eadt to\u00e1n EDC m\u1ea1nh m\u1ebd c\u1ee7a n\u00f3 t\u1ef1 \u0111\u1ed9ng b\u00f9 \u0111\u1eafp hi\u1ec7u qu\u1ea3 hi\u1ec7n t\u01b0\u1ee3ng T\u00e1n s\u1eafc s\u1eafc th\u00e1i v\u00e0 T\u00e1n s\u1eafc ch\u1ebf \u0111\u1ed9 ph\u00e2n c\u1ef1c nghi\u00eam tr\u1ecdng tr\u00ean h\u00e0ng tr\u0103m kil\u00f4m\u00e9t, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t <strong>b\u1ed9 quang ch\u1ecbu t\u00e1n s\u1eafc<\/strong> l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u01b0\u1eddng d\u00e0i v\u00e0 \u0111\u00f4 th\u1ecb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1ef1a ch\u1ecdn m\u1ed9t <strong>b\u1ed9 thu ph\u00e1t quang s\u1ee3i cho kho\u1ea3ng c\u00e1ch xa<\/strong>, h\u00e3y lu\u00f4n ki\u1ec3m tra c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1ec1 b\u00f9 t\u00e1n s\u1eafc. M\u1ed9t m\u00f4-\u0111un ch\u1ea5t l\u01b0\u1ee3ng cao nh\u01b0 c\u00e1c s\u1ea3n ph\u1ea9m trong d\u00f2ng<a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"> <strong>LINK-PP<\/strong><\/a> \u0111\u1ea3m b\u1ea3o kho\u1ea3ng c\u00e1ch truy\u1ec1n t\u1ed1i \u0111a v\u00e0 \u0111\u1ed9 nguy\u00ean v\u1eb9n t\u00edn hi\u1ec7u, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a thi\u1ebft k\u1ebf m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i t\u00e1n s\u1eafc<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Nguy\u00ean nh\u00e2n ch\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u00e1c \u0111\u1ed9ng ch\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>K\u1ef9 thu\u1eadt gi\u1ea3m thi\u1ec3u<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u00e1n s\u1eafc s\u1eafc \u0111\u1ed9 (CD)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00e0m r\u1ed9ng xung, gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch v\u00e0 t\u1ed1c \u0111\u1ed9.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1ee3i b\u00f9 t\u00e1n s\u1eafc (DCF), X\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 (DSP) trong c\u00e1c m\u00f4-\u0111un \u0111\u1ed3ng pha, S\u1ee3i quang d\u1ecbch t\u00e1n s\u1eafc (DSF)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>PMD (Ph\u00e2n t\u00e1n ch\u1ebf \u0111\u1ed9 ph\u00e2n c\u1ef1c)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c khuy\u1ebft t\u1eadt g\u00e2y ra s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u1ed1c \u0111\u1ed9 gi\u1eefa c\u00e1c ch\u1ebf \u0111\u1ed9 ph\u00e2n c\u1ef1c.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u00e1ng k\u1ec3 \u1edf t\u1ed1c \u0111\u1ed9 cao (&gt;10G), g\u00e2y m\u00e9o xung.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c m\u00f4-\u0111un b\u00f9 PMD, X\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 (DSP) ti\u00ean ti\u1ebfn<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 K\u1ebft lu\u1eadn: \u0110\u1eebng \u0111\u1ec3 t\u00e1n s\u1eafc l\u00e0m m\u1edd t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00e1n s\u1eafc s\u1ee3i quang<\/strong> l\u00e0 m\u1ed9t \u0111\u1eb7c t\u00ednh v\u1ed1n c\u00f3 c\u1ee7a c\u00e1p quang, nh\u01b0ng nay n\u00f3 kh\u00f4ng c\u00f2n l\u00e0 r\u00e0o c\u1ea3n kh\u00f4ng th\u1ec3 v\u01b0\u1ee3t qua. Th\u00f4ng qua s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa lo\u1ea1i c\u00e1p quang chuy\u00ean d\u1ee5ng, thi\u1ebft k\u1ebf m\u1ea1ng th\u00f4ng minh v\u00e0, quan tr\u1ecdng nh\u1ea5t, c\u00e1c c\u00f4ng ngh\u1ec7 x\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 ti\u00ean ti\u1ebfn <strong>b\u1ed9 thu ph\u00e1t quang ti\u00ean ti\u1ebfn<\/strong>, c\u00e1c t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c \u0111\u1ea7u t\u01b0 v\u00e0o c\u00e1c th\u00e0nh ph\u1ea7n ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1eed l\u00fd nh\u1eefng gi\u1edbi h\u1ea1n v\u1eadt l\u00fd n\u00e0y, l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t m\u1ea1ng l\u01b0\u1edbi b\u1ec1n b\u1ec9, c\u00f3 dung l\u01b0\u1ee3ng cao v\u00e0 s\u1eb5n s\u00e0ng cho t\u01b0\u01a1ng lai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u1eb5n s\u00e0ng lo\u1ea1i b\u1ecf hi\u1ec7n t\u01b0\u1ee3ng ph\u00e2n t\u00e1n ra kh\u1ecfi ph\u01b0\u01a1ng tr\u00ecnh m\u1ea1ng c\u1ee7a b\u1ea1n? \ud83d\ude80<\/strong><\/p>\n\n\n\n<div><div widgetid=\"3ef779ac451211f099380a58fbc66727\" format=\"embedded\" data-widget-id=\"3ef779ac451211f099380a58fbc66727\" data-mode=\"production.zh\" style=\"display: block;\"><\/div><\/div>\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\" >Nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng ph\u00e2n t\u00e1n trong s\u1ee3i quang l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n quan s\u00e1t th\u1ea5y hi\u1ec7n t\u01b0\u1ee3ng ph\u00e2n t\u00e1n khi c\u00e1c ph\u1ea7n kh\u00e1c nhau c\u1ee7a m\u1ed9t xung \u00e1nh s\u00e1ng di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau b\u00ean trong s\u1ee3i quang. Hi\u1ec7n t\u01b0\u1ee3ng lan r\u1ed9ng n\u00e0y x\u1ea3y ra do s\u1ee3i quang l\u00e0m cong v\u00e0 l\u00e0m ch\u1eadm m\u1ed9t s\u1ed1 b\u01b0\u1edbc s\u00f3ng nhi\u1ec1u h\u01a1n nh\u1eefng b\u01b0\u1edbc s\u00f3ng kh\u00e1c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Hi\u1ec7n t\u01b0\u1ee3ng ph\u00e2n t\u00e1n \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 m\u1ea1ng c\u1ee7a t\u00f4i?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7n t\u01b0\u1ee3ng ph\u00e2n t\u00e1n c\u00f3 th\u1ec3 l\u00e0m m\u1edd c\u00e1c xung \u00e1nh s\u00e1ng c\u1ee7a b\u1ea1n. Khi \u0111i\u1ec1u n\u00e0y x\u1ea3y ra, b\u1ed9 thu ph\u00e1t c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 nh\u1ea7m l\u1eabn d\u1eef li\u1ec7u. B\u1ea1n c\u00f3 th\u1ec3 nh\u1eadn th\u1ea5y t\u1ed1c \u0111\u1ed9 gi\u1ea3m ho\u1eb7c l\u1ed7i t\u0103ng l\u00ean trong m\u1ea1ng c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00f4i c\u00f3 th\u1ec3 t\u1ef1 kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 do ph\u00e2n t\u00e1n g\u00e2y ra kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng ph\u00e2n t\u00e1n b\u1eb1ng c\u00e1ch ch\u1ecdn \u0111\u00fang lo\u1ea1i s\u1ee3i quang v\u00e0 s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb b\u00f9. H\u00e3y th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n. N\u1ebfu v\u1eabn g\u1eb7p s\u1ef1 c\u1ed1, h\u00e3y nh\u1edd chuy\u00ean gia h\u1ed7 tr\u1ee3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Lo\u1ea1i s\u1ee3i quang c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng ph\u00e2n t\u00e1n kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3! S\u1ee3i quang \u0111\u01a1n mode c\u00f3 m\u1ee9c \u0111\u1ed9 ph\u00e2n t\u00e1n theo ch\u1ebf \u0111\u1ed9 th\u1ea5p h\u01a1n. N\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t h\u01a1n tr\u00ean c\u00e1c kho\u1ea3ng c\u00e1ch d\u00e0i. S\u1ee3i quang \u0111a mode c\u00f3 m\u1ee9c \u0111\u1ed9 ph\u00e2n t\u00e1n theo ch\u1ebf \u0111\u1ed9 cao h\u01a1n. Lo\u1ea1i n\u00e0y ph\u00f9 h\u1ee3p nh\u1ea5t cho c\u00e1c k\u1ebft n\u1ed1i ng\u1eafn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0o gi\u00fap qu\u1ea3n l\u00fd hi\u1ec7n t\u01b0\u1ee3ng ph\u00e2n t\u00e1n?<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un b\u00f9 ph\u00e2n t\u00e1n, m\u1ea1ng Bragg tr\u00ean s\u1ee3i quang ho\u1eb7c c\u00e1c lo\u1ea1i s\u1ee3i quang \u0111\u1eb7c bi\u1ec7t. Nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0y gi\u00fap gi\u1eef t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n r\u00f5 n\u00e9t v\u00e0 d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n \u0111\u00e1ng tin c\u1eady.<\/p><\/blockquote>\n\n\n\n<script src=\"https:\/\/cdn.mylandingpages.co\/widgets\/platform\/platform.widget.js\" async=\"true\"><\/script>","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec7n t\u01b0\u1ee3ng t\u00e1n s\u1eafc trong b\u1ed9 thu ph\u00e1t quang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 r\u00f5 n\u00e9t c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a d\u1eef li\u1ec7u. T\u00ecm hi\u1ec3u c\u00e1ch qu\u1ea3n l\u00fd t\u00e1n s\u1eafc \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u su\u1ea5t m\u1ea1ng t\u1ed1i \u01b0u.<\/p>","protected":false},"author":1,"featured_media":5206,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-5210","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/5210","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/comments?post=5210"}],"version-history":[{"count":4,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/5210\/revisions"}],"predecessor-version":[{"id":11179,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/5210\/revisions\/11179"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/media\/5206"}],"wp:attachment":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/media?parent=5210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/categories?post=5210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/tags?post=5210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}