{"id":2570,"date":"2026-04-07T00:00:00","date_gmt":"2026-04-07T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/voa-variable-optical-attenuator\/"},"modified":"2026-06-22T03:37:44","modified_gmt":"2026-06-22T03:37:44","slug":"voa-variable-optical-attenuator","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/voa-variable-optical-attenuator","title":{"rendered":"B\u1ed9 suy hao quang bi\u1ebfn \u0111\u1ed5i (VOA) trong s\u1ee3i quang l\u00e0 g\u00ec?"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"536\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72514e07543842f2861580702c38ef36-1024x536.jpg\" alt=\"What Is a VOA Variable Optical Attenuator in Fiber Optics?\" class=\"wp-image-2561\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72514e07543842f2861580702c38ef36-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72514e07543842f2861580702c38ef36-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72514e07543842f2861580702c38ef36-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72514e07543842f2861580702c38ef36-18x9.jpg 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/72514e07543842f2861580702c38ef36.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng s\u1ee3i quang hi\u1ec7n \u0111\u1ea1i, vi\u1ec7c duy tr\u00ec ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c m\u1ee9c \u0111\u1ed9 t\u00edn hi\u1ec7u l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u \u1ed5n \u0111\u1ecbnh v\u00e0 t\u1ed1c \u0111\u1ed9 cao. Khi t\u1ed1c \u0111\u1ed9 m\u1ea1ng ti\u1ebfp t\u1ee5c t\u0103ng t\u1eeb 10G l\u00ean 100G v\u00e0 cao h\u01a1n n\u1eefa, ngay c\u1ea3 nh\u1eefng bi\u1ebfn \u0111\u1ed5i nh\u1ecf trong c\u00f4ng su\u1ea5t quang c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn hi\u1ec7u n\u0103ng, d\u1eabn \u0111\u1ebfn m\u00e9o t\u00edn hi\u1ec7u, t\u1ef7 l\u1ec7 l\u1ed7i t\u0103ng cao ho\u1eb7c qu\u00e1 t\u1ea3i b\u1ed9 thu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t th\u00e0nh ph\u1ea7n then ch\u1ed1t cho ph\u00e9p \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c \u0111\u1ed9 ki\u1ec3m so\u00e1t n\u00e0y l\u00e0 <strong>B\u1ed9 suy hao quang h\u1ecdc c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh (VOA)<\/strong>. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i c\u00f9ng v\u1edbi c\u00e1c module thu ph\u00e1t quang nh\u01b0 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25832-1-2-4g-transceiver-modules.htm\">B\u1ed9 thu ph\u00e1t SFP<\/a> and <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\">module QSFP<\/a>, m\u1ed9t b\u1ed9 suy hao quang \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c (VOA) cho ph\u00e9p k\u1ef9 s\u01b0 \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c c\u00f4ng su\u1ea5t t\u00edn hi\u1ec7u quang sao cho ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 trong trung t\u00e2m d\u1eef li\u1ec7u, m\u1ea1ng vi\u1ec5n th\u00f4ng hay m\u00f4i tr\u01b0\u1eddng ki\u1ec3m tra quang h\u1ecdc, c\u00e1c b\u1ed9 VOA \u0111\u1ec1u \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u n\u0103ng li\u00ean k\u1ebft, b\u1ea3o v\u1ec7 c\u00e1c th\u00e0nh ph\u1ea7n nh\u1ea1y c\u1ea3m v\u00e0 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng truy\u1ec1n th\u00f4ng tin \u0111\u00e1ng tin c\u1eady tr\u00ean c\u00e1c kho\u1ea3ng c\u00e1ch truy\u1ec1n kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng n\u1ed9i dung b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u trong h\u01b0\u1edbng d\u1eabn n\u00e0y<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c s\u1ef1 hi\u1ec3u bi\u1ebft r\u00f5 r\u00e0ng v\u1ec1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ed9 suy hao quang \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c (VOA) l\u00e0 g\u00ec v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3<\/p><\/li>\n\n\n\n<li><p>V\u00ec sao VOA l\u00e0 th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu trong c\u00e1c h\u1ec7 th\u1ed1ng s\u1ee3i quang<\/p><\/li>\n\n\n\n<li><p>C\u00e1ch VOA t\u01b0\u01a1ng t\u00e1c v\u1edbi <a href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\" target=\"_self\">module quang<br><\/a> trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf<\/p><\/li>\n\n\n\n<li><p>Khi n\u00e0o v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 s\u1eed d\u1ee5ng VOA nh\u1eb1m \u0111\u1ea1t hi\u1ec7u n\u0103ng m\u1ea1ng t\u1ed1i \u01b0u<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m cung c\u1ea5p c\u1ea3 ki\u1ebfn th\u1ee9c n\u1ec1n t\u1ea3ng l\u1eabn c\u00e1c th\u00f4ng tin k\u1ef9 thu\u1eadt th\u1ef1c ti\u1ec5n, do \u0111\u00f3 r\u1ea5t h\u1eefu \u00edch cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u, k\u1ef9 s\u01b0 m\u1ea1ng v\u00e0 b\u1ea5t k\u1ef3 ai \u0111ang l\u00e0m vi\u1ec7c v\u1edbi c\u00f4ng ngh\u1ec7 s\u1ee3i quang.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe6 B\u1ed9 suy hao quang \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c (VOA) l\u00e0 g\u00ec?<\/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\/40c8a38d89cf43c8b781f618545bde74.jpg\" alt=\"What Is a VOA Variable Optical Attenuator?\" class=\"wp-image-2562\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40c8a38d89cf43c8b781f618545bde74.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40c8a38d89cf43c8b781f618545bde74-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40c8a38d89cf43c8b781f618545bde74-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40c8a38d89cf43c8b781f618545bde74-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40c8a38d89cf43c8b781f618545bde74-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t VOA (Variable Optical Attenuator \u2013 B\u1ed9 suy hao quang \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c) l\u00e0 thi\u1ebft b\u1ecb s\u1ee3i quang c\u00f3 kh\u1ea3 n\u0103ng \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9ng m\u1ee9c c\u00f4ng su\u1ea5t t\u00edn hi\u1ec7u quang b\u1eb1ng c\u00e1ch \u0111\u01b0a v\u00e0o m\u1ee9c suy hao \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/attenuation-in-optical-transceiver-management-and-solutions\/\">suy hao<\/a> (loss). Thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng quang nh\u1eb1m \u0111\u1ea3m b\u1ea3o t\u00edn hi\u1ec7u lu\u00f4n n\u1eb1m trong d\u1ea3i ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u01b0u c\u1ee7a b\u1ed9 thu v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, VOA ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nh\u01b0 m\u1ed9t <strong>\u201cb\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u00e2m l\u01b0\u1ee3ng cho \u00e1nh s\u00e1ng\u201d<\/strong>\u2014thay v\u00ec khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u, VOA gi\u1ea3m ch\u00ednh x\u00e1c c\u00f4ng su\u1ea5t quang m\u00e0 kh\u00f4ng g\u00e2y m\u00e9o \u0111\u00e1ng k\u1ec3 d\u1ea1ng s\u00f3ng t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110i\u1ec1u ch\u1ec9nh tinh vi m\u1ee9c \u0111\u1ed9 t\u00edn hi\u1ec7u quang (\u0111\u01b0\u1ee3c \u0111o b\u1eb1ng <strong>dB<\/strong>)<\/p><\/li>\n\n\n\n<li><p>Ng\u0103n ng\u1eeba t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i b\u1ed9 thu<\/p><\/li>\n\n\n\n<li><p>T\u1ed1i \u01b0u h\u00f3a hi\u1ec7u n\u0103ng v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe6 B\u1ed9 suy hao quang \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ed9 suy hao quang \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c (VOA) ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ch\u1ee7 \u00fd \u0111\u01b0a t\u1ed5n hao quang v\u00e0o \u0111\u01b0\u1eddng truy\u1ec1n. M\u1ee9c \u0111\u1ed9 suy hao n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n th\u1ee7 c\u00f4ng ho\u1eb7c t\u1ef1 \u0111\u1ed9ng t\u00f9y thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf.<\/p>\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\/0a44f2c48b06477c977cf91481197c8a.jpg\" alt=\"How Does a Variable Optical Attenuator Work?\" class=\"wp-image-2563\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0a44f2c48b06477c977cf91481197c8a.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0a44f2c48b06477c977cf91481197c8a-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0a44f2c48b06477c977cf91481197c8a-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0a44f2c48b06477c977cf91481197c8a-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0a44f2c48b06477c977cf91481197c8a-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 suy hao quang \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Suy hao c\u01a1 h\u1ecdc<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110i\u1ec1u ch\u1ec9nh s\u1ef1 c\u0103n ch\u1ec9nh s\u1ee3i quang ho\u1eb7c ch\u00e8n b\u1ed9 l\u1ecdc m\u1eadt \u0111\u1ed9 trung t\u00ednh<\/p><\/li>\n\n\n\n<li><p>Ph\u1ed5 bi\u1ebfn trong c\u00e1c VOA th\u1ee7 c\u00f4ng<\/p><\/li>\n\n\n\n<li><p>\u0110\u01a1n gi\u1ea3n, chi ph\u00ed th\u1ea5p, nh\u01b0ng th\u1eddi gian \u0111\u00e1p \u1ee9ng ch\u1eadm<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec1u khi\u1ec3n d\u1ef1a tr\u00ean MEMS<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng g\u01b0\u01a1ng vi c\u01a1-\u0111i\u1ec7n t\u1eed \u0111\u1ec3 thay \u0111\u1ed5i m\u1ee9c gh\u00e9p \u00e1nh s\u00e1ng<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 th\u1eddi gian \u0111\u00e1p \u1ee9ng nhanh<\/p><\/li>\n\n\n\n<li><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u1ea1ng quang \u0111\u1ed9ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H\u1ea5p th\u1ee5 \/ ph\u1ea3n x\u1ea1 quang<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Thay \u0111\u1ed5i \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u (hi\u1ec7u \u1ee9ng nhi\u1ec7t ho\u1eb7c \u0111i\u1ec7n-quang)<\/p><\/li>\n\n\n\n<li><p>Ki\u1ec3m so\u00e1t l\u01b0\u1ee3ng \u00e1nh s\u00e1ng b\u1ecb h\u1ea5p th\u1ee5 ho\u1eb7c ph\u1ea3n x\u1ea1<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh c\u1ee7a b\u1ed9 suy hao s\u1ee3i quang \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>D\u1ea3i suy hao:<\/strong> Th\u00f4ng th\u01b0\u1eddng <strong>0\u201330 dB<\/strong> (m\u1ed9t s\u1ed1 thi\u1ebft k\u1ebf v\u01b0\u1ee3t qu\u00e1 60 dB)<\/p><\/li>\n\n\n\n<li><p><strong>D\u1ea3i l\u00e0m vi\u1ec7c <\/strong><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-wavelengths-850nm-1310nm-1550nm-guide\/\" target=\"_blank\" rel=\"\"><strong>B\u01b0\u1edbc s\u00f3ng<br><\/strong><\/a><strong>:<\/strong> Th\u00f4ng th\u01b0\u1eddng <strong>1310 nm<\/strong> and <strong>1550 nm<\/strong><\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-transceiver-insertion-loss-definition-impact\/\" target=\"_blank\" rel=\"\"><strong>T\u1ed5n hao ch\u00e8n<\/strong><\/a><strong>:<\/strong> T\u1ed5n hao n\u1ec1n th\u1ea5p khi m\u1ee9c suy hao \u1edf gi\u00e1 tr\u1ecb t\u1ed1i thi\u1ec3u<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-transceiver-return-loss-back-reflection-guide\/\" target=\"_blank\" rel=\"\"><strong>T\u1ed5n hao ph\u1ea3n x\u1ea1 (Return Loss)<\/strong><\/a><strong>:<\/strong> Quan tr\u1ecdng \u0111\u1ec3 gi\u1ea3m thi\u1ec3u ph\u1ea3n x\u1ea1 t\u00edn hi\u1ec7u<\/p><\/li>\n\n\n\n<li><p><strong>Th\u1eddi gian \u0111\u00e1p \u1ee9ng:<\/strong> Y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ed1i v\u1edbi VOA \u0111\u1ed9ng (v\u00e0i mili gi\u00e2y \u0111\u1ebfn v\u00e0i micro gi\u00e2y)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ec sao VOA quan tr\u1ecdng trong c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng quang<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">VOA l\u00e0 th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu nh\u1eb1m duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng trong c\u00e1c m\u1ea1ng s\u1ee3i quang hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><p><strong>\u1ed4n \u0111\u1ecbnh t\u00edn hi\u1ec7u<\/strong><\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea3m b\u1ea3o m\u1ee9c c\u00f4ng su\u1ea5t quang nh\u1ea5t qu\u00e1n tr\u00ean c\u00e1c \u0111i\u1ec1u ki\u1ec7n li\u00ean k\u1ebft kh\u00e1c nhau.<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\" >\n<li><p><strong>Ng\u0103n ng\u1eeba t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i b\u1ed9 thu<\/strong><\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng su\u1ea5t quang cao c\u00f3 th\u1ec3 b\u00e3o h\u00f2a c\u00e1c b\u1ed9 d\u00f2 quang, g\u00e2y ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1eaft \u0111\u1ec9nh t\u00edn hi\u1ec7u<\/p><\/li>\n\n\n\n<li><p>T\u0103ng t\u1ef7 l\u1ec7 l\u1ed7i<\/p><\/li>\n\n\n\n<li><p>Nguy c\u01a1 h\u01b0 h\u1ecfng ph\u1ea7n c\u1ee9ng<\/p><\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\" >\n<li><p><strong>C\u1ea3i thi\u1ec7n hi\u1ec7u n\u0103ng BER<\/strong><\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ee9c t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a gi\u00fap gi\u1ea3m <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-what-is-bit-error-rate\/\">T\u1ef7 l\u1ec7 l\u1ed7i bit<\/a> (t\u1ef7 l\u1ec7 l\u1ed7i bit), \u0111\u1eb7c bi\u1ec7t trong c\u00e1c li\u00ean k\u1ebft t\u1ed1c \u0111\u1ed9 cao.<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\" >\n<li><p><strong>H\u1ed7 tr\u1ee3 m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao<\/strong><\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft y\u1ebfu cho:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c h\u1ec7 th\u1ed1ng 10G \/ 25G \/ 100G \/ 400G<\/p><\/li>\n\n\n\n<li><p>\u0110a ph\u00e2n b\u01b0\u1edbc s\u00f3ng m\u1eadt \u0111\u1ed9 cao (<a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-dwdm-explaining-dense-wavelength-division-multiplexing\/\" target=\"_blank\" rel=\"\"><strong>DWDM<\/strong><\/a>)<\/p><\/li>\n\n\n\n<li><p>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 vi\u1ec5n th\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe6 M\u1ed1i quan h\u1ec7 gi\u1eefa VOA v\u00e0 c\u00e1c module quang<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa VOA v\u00e0 c\u00e1c b\u1ed9 thu ph\u00e1t quang\u2014ch\u1eb3ng h\u1ea1n nh\u01b0 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26155-1g-sfp.htm\">m\u00f4-\u0111un SFP<\/a> v\u00e0 module QSFP\u2014l\u00e0 y\u1ebfu t\u1ed1 n\u1ec1n t\u1ea3ng \u0111\u1ed1i v\u1edbi hi\u1ec7u n\u0103ng h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d74cfa0e135648f5b66d968106c6087b.jpg\" alt=\"Relationship Between VOA and Optical Modules\" class=\"wp-image-2564\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d74cfa0e135648f5b66d968106c6087b.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d74cfa0e135648f5b66d968106c6087b-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d74cfa0e135648f5b66d968106c6087b-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d74cfa0e135648f5b66d968106c6087b-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d74cfa0e135648f5b66d968106c6087b-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u1ed9 nh\u1ea1y b\u1ed9 thu so v\u1edbi ng\u01b0\u1ee1ng qu\u00e1 t\u1ea3i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed7i module quang \u0111\u1ec1u c\u00f3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u0110\u1ed9 nh\u1ea1y b\u1ed9 thu (c\u00f4ng su\u1ea5t \u0111\u1ea7u v\u00e0o t\u1ed1i thi\u1ec3u)<\/strong><\/p><\/li>\n\n\n\n<li><p><strong>Ng\u01b0\u1ee1ng qu\u00e1 t\u1ea3i (c\u00f4ng su\u1ea5t \u0111\u1ea7u v\u00e0o t\u1ed1i \u0111a an to\u00e0n)<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">VOA \u0111\u1ea3m b\u1ea3o t\u00edn hi\u1ec7u nh\u1eadn \u0111\u01b0\u1ee3c n\u1eb1m trong c\u1eeda s\u1ed5 v\u1eadn h\u00e0nh an to\u00e0n n\u00e0y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u00ecnh hu\u1ed1ng kh\u00f4ng kh\u1edbp v\u1edbi th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>A <a href=\"https:\/\/www.l-p.com\/products\/476763.htm\" target=\"_self\">M\u00f4-\u0111un quang 10 km<\/a> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean c\u00e1p n\u1ed1i ng\u1eafn (v\u00ed d\u1ee5: 2\u20135 m\u00e9t)<\/p><\/li>\n\n\n\n<li><p>K\u1ebft qu\u1ea3: C\u00f4ng su\u1ea5t quang nh\u1eadn \u0111\u01b0\u1ee3c qu\u00e1 cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00e1c \u0111\u1ed9ng n\u1ebfu kh\u00f4ng c\u00f3 b\u1ed9 suy hao quang bi\u1ebfn \u0111\u1ed5i (VOA):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea5t g\u00f3i tin<\/p><\/li>\n\n\n\n<li><p>L\u1ed7i CRC<\/p><\/li>\n\n\n\n<li><p>M\u1ea5t \u1ed5n \u0111\u1ecbnh li\u00ean k\u1ebft<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i ph\u00e1p:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u00e8n m\u1ed9t VOA \u0111\u1ec3 gi\u1ea3m c\u00f4ng su\u1ea5t quang xu\u1ed1ng m\u1ee9c t\u1ed1i \u01b0u<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">T\u00e1c \u0111\u1ed9ng \u0111\u1ebfn hi\u1ec7u n\u0103ng c\u1ee7a m\u00f4-\u0111un<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u00e9o d\u00e0i tu\u1ed5i th\u1ecd m\u00f4-\u0111un<\/p><\/li>\n\n\n\n<li><p>Ng\u0103n ng\u1eeba c\u0103ng nhi\u1ec7t v\u00e0 b\u00e3o h\u00f2a b\u1ed9 thu<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea3m b\u1ea3o th\u00f4ng l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ed9 tr\u1ec5 th\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Khi n\u00e0o b\u1ea1n c\u1ea7n VOA v\u1edbi c\u00e1c m\u00f4-\u0111un quang?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c t\u00ecnh hu\u1ed1ng ra quy\u1ebft \u0111\u1ecbnh m\u00e0 VOA l\u00e0 b\u1eaft bu\u1ed9c:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">S\u1eed d\u1ee5ng VOA n\u1ebfu:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng truy\u1ec1n ng\u1eafn h\u01a1n nhi\u1ec1u so v\u1edbi ph\u1ea1m vi \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u00f4-\u0111un<\/p><\/li>\n\n\n\n<li><p>B\u1ea1n quan s\u00e1t th\u1ea5y c\u00f4ng su\u1ea5t quang nh\u1eadn \u0111\u01b0\u1ee3c cao (v\u00ed d\u1ee5: &gt; -3 dBm)<\/p><\/li>\n\n\n\n<li><p>Th\u1ef1c hi\u1ec7n ki\u1ec3m tra ho\u1eb7c x\u00e1c th\u1ef1c trong ph\u00f2ng th\u00ed nghi\u1ec7m<\/p><\/li>\n\n\n\n<li><p>Ho\u1ea1t \u0111\u1ed9ng trong h\u1ec7 th\u1ed1ng DWDM c\u00f3 nhi\u1ec1u k\u00eanh<\/p><\/li>\n\n\n\n<li><p>Tri\u1ec3n khai trong <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-data-center\/\" target=\"_blank\" rel=\"\">trung t\u00e2m d\u1eef li\u1ec7u<br><\/a> v\u1edbi \u0111o\u1ea1n c\u00e1p quang ng\u1eafn<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">B\u1ea1n c\u00f3 th\u1ec3 KH\u00d4NG c\u1ea7n VOA n\u1ebfu:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u01b0\u1eddng truy\u1ec1n n\u1eb1m trong kho\u1ea3ng c\u00e1ch v\u00e0 ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t \u0111\u00e3 thi\u1ebft k\u1ebf<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un t\u1ea7m ng\u1eafn c\u00f3 c\u00f4ng su\u1ea5t th\u1ea5p (v\u00ed d\u1ee5:,<a href=\"https:\/\/www.l-p.com\/products\/475415.htm\" target=\"_self\"> quang h\u1ecdc SR<\/a>)<\/p><\/li>\n\n\n\n<li><p>M\u1ee9c c\u00f4ng su\u1ea5t \u0111\u00e3 n\u1eb1m trong th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a b\u1ed9 thu<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe6 So s\u00e1nh VOA v\u00e0 b\u1ed9 suy hao quang c\u1ed1 \u0111\u1ecbnh: Nh\u1eefng kh\u00e1c bi\u1ec7t ch\u00ednh<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng c\u00e1p quang, vi\u1ec7c ki\u1ec3m so\u00e1t c\u00f4ng su\u1ea5t t\u00edn hi\u1ec7u quang l\u00e0 thi\u1ebft y\u1ebfu \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a li\u00ean k\u1ebft v\u00e0 b\u1ea3o v\u1ec7 c\u00e1c th\u00e0nh ph\u1ea7n nh\u1ea1y c\u1ea3m. Hai gi\u1ea3i ph\u00e1p ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch n\u00e0y l\u00e0 <strong>B\u1ed9 suy hao quang h\u1ecdc c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh (VOA)<\/strong> v\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/fixed-optical-attenuator-in-fiber-optics\/\"><strong>b\u1ed9 suy hao quang c\u1ed1 \u0111\u1ecbnh<\/strong><\/a>. M\u1eb7c d\u00f9 c\u1ea3 hai thi\u1ebft b\u1ecb \u0111\u1ec1u \u0111\u1ea3m nhi\u1ec7m c\u00f9ng m\u1ed9t vai tr\u00f2 c\u01a1 b\u1ea3n\u2014gi\u1ea3m c\u00f4ng su\u1ea5t quang\u2014ch\u00fang l\u1ea1i kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 m\u1eb7t t\u00ednh linh ho\u1ea1t, \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 c\u00e1c t\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng. Vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng kh\u00e1c bi\u1ec7t then ch\u1ed1t gi\u1eefa b\u1ed9 suy hao quang bi\u1ebfn \u0111\u1ed5i (VOA) v\u00e0 b\u1ed9 suy hao c\u1ed1 \u0111\u1ecbnh l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 thi\u1ebft k\u1ebf m\u1ea1ng, b\u1edfi l\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u n\u0103ng h\u1ec7 th\u1ed1ng, hi\u1ec7u qu\u1ea3 chi ph\u00ed v\u00e0 \u0111\u1ed9 tin c\u1eady d\u00e0i h\u1ea1n.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28356bf79a8b459bbc137eaa202c734d.jpg\" alt=\"Fixed Optical Attenuator vs. VOA : Key Differences\" class=\"wp-image-2565\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28356bf79a8b459bbc137eaa202c734d.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28356bf79a8b459bbc137eaa202c734d-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28356bf79a8b459bbc137eaa202c734d-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28356bf79a8b459bbc137eaa202c734d-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28356bf79a8b459bbc137eaa202c734d-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">B\u1ed9 suy hao quang c\u1ed1 \u0111\u1ecbnh l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>b\u1ed9 suy hao quang c\u1ed1 \u0111\u1ecbnh<\/strong> l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb c\u00e1p quang th\u1ee5 \u0111\u1ed9ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 gi\u1ea3m c\u00f4ng su\u1ea5t t\u00edn hi\u1ec7u quang theo m\u1ed9t m\u1ee9c nh\u1ea5t \u0111\u1ecbnh v\u00e0 kh\u00f4ng \u0111\u1ed5i. Kh\u00e1c v\u1edbi b\u1ed9 suy hao quang bi\u1ebfn \u0111\u1ed5i (VOA), n\u00f3 cung c\u1ea5p m\u1ed9t gi\u00e1 tr\u1ecb suy hao c\u1ed1 \u0111\u1ecbnh\u2014th\u01b0\u1eddng l\u00e0 1 dB, 3 dB, 5 dB, 10 dB ho\u1eb7c cao h\u01a1n\u2014m\u00e0 kh\u00f4ng th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh sau khi l\u1eafp \u0111\u1eb7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u1ed9 suy hao c\u1ed1 \u0111\u1ecbnh th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1ea1ng \u1ed5n \u0111\u1ecbnh v\u00e0 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c, n\u01a1i m\u1ee9c \u0111\u1ed9 suy hao t\u00edn hi\u1ec7u c\u1ea7n thi\u1ebft \u0111\u00e3 \u0111\u01b0\u1ee3c bi\u1ebft tr\u01b0\u1edbc. Ch\u00fang \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ng\u0103n ch\u1eb7n hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 t\u1ea3i b\u1ed9 thu trong c\u00e1c li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch ng\u1eafn<\/p><\/li>\n\n\n\n<li><p>C\u00e2n b\u1eb1ng m\u1ee9c c\u00f4ng su\u1ea5t quang gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb<\/p><\/li>\n\n\n\n<li><p>Duy tr\u00ec hi\u1ec7u n\u0103ng t\u00edn hi\u1ec7u \u1ed5n \u0111\u1ecbnh trong c\u00e1c tri\u1ec3n khai d\u00e0i h\u1ea1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1edd c\u1ea5u tr\u00fac \u0111\u01a1n gi\u1ea3n, chi ph\u00ed th\u1ea5p v\u00e0 \u0111\u1ed9 tin c\u1eady cao, c\u00e1c b\u1ed9 suy hao quang c\u1ed1 \u0111\u1ecbnh l\u00e0 l\u1ef1a ch\u1ecdn th\u1ef1c ti\u1ec5n cho nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00e1p quang ti\u00eau chu\u1ea9n, n\u01a1i kh\u00f4ng y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">B\u1ed9 suy hao quang<strong> <\/strong>So s\u00e1nh c\u00e1c gi\u1ea3i ph\u00e1p<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 165px;\"\/><col style=\"width: 267px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"165\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"267\"><p>B\u1ed9 suy hao quang bi\u1ebfn \u0111\u1ed5i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>B\u1ed9 suy hao quang c\u1ed1 \u0111\u1ecbnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"165\"><p>M\u1ee9c suy hao<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"267\"><p>C\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh (v\u00ed d\u1ee5: 0\u201330 dB)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u1ed1 \u0111\u1ecbnh (v\u00ed d\u1ee5: 3 dB, 10 dB)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"165\"><p>Linh ho\u1ea1t<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"267\"><p>Cao<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"165\"><p>Cost<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"267\"><p>Cao h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lower<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"165\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"267\"><p>H\u1ec7 th\u1ed1ng \u0111\u1ed9ng, ki\u1ec3m tra<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft \u1ed5n \u0111\u1ecbnh, d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"165\"><p>\u0110\u1ed9 ch\u00ednh x\u00e1c<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"267\"><p>Ki\u1ec3m so\u00e1t tinh vi<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft lu\u1eadn:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng VOA cho c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111\u1ed9ng<\/p><\/li>\n\n\n\n<li><p>S\u1eed d\u1ee5ng b\u1ed9 suy hao c\u1ed1 \u0111\u1ecbnh cho c\u00e1c tri\u1ec3n khai \u0111\u01a1n gi\u1ea3n<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe6 C\u00e1c lo\u1ea1i VOA v\u00e0 c\u00e1ch ch\u1ecdn lo\u1ea1i ph\u00f9 h\u1ee3p cho \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 suy hao quang bi\u1ebfn \u0111\u1ed5i (VOA) th\u00edch h\u1ee3p \u0111\u00f2i h\u1ecfi c\u1ea3 s\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 c\u00e1c lo\u1ea1i s\u1eb5n c\u00f3 l\u1eabn vi\u1ec7c \u0111\u00e1nh gi\u00e1 r\u00f5 r\u00e0ng c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng b\u1ea1n. C\u00e1c thi\u1ebft k\u1ebf VOA kh\u00e1c nhau ph\u1ee5c v\u1ee5 cho c\u00e1c t\u00ecnh hu\u1ed1ng v\u1eadn h\u00e0nh kh\u00e1c nhau\u2014t\u1eeb ki\u1ec3m tra th\u1ee7 c\u00f4ng \u0111\u1ebfn c\u00e1c m\u1ea1ng quang t\u1ef1 \u0111\u1ed9ng ho\u00e0n to\u00e0n\u2014do \u0111\u00f3, vi\u1ec7c ch\u1ecdn \u0111\u00fang lo\u1ea1i l\u00e0 thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u n\u0103ng v\u00e0 \u0111\u1ed9 tin c\u1eady t\u1ed1i \u01b0u.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/43131c71c43247e3b82f96a08c562bd6.jpg\" alt=\"Types of VOAs\" class=\"wp-image-2566\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/43131c71c43247e3b82f96a08c562bd6.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/43131c71c43247e3b82f96a08c562bd6-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/43131c71c43247e3b82f96a08c562bd6-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/43131c71c43247e3b82f96a08c562bd6-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/43131c71c43247e3b82f96a08c562bd6-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd39 C\u00e1c lo\u1ea1i VOA ph\u1ed5 bi\u1ebfn trong m\u1ea1ng c\u00e1p quang<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>VOA th\u1ee7 c\u00f4ng<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Suy hao c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh b\u1edfi ng\u01b0\u1eddi d\u00f9ng<\/p><\/li>\n\n\n\n<li><p>L\u00fd t\u01b0\u1edfng cho m\u00f4i tr\u01b0\u1eddng ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 ki\u1ec3m tra t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng<\/p><\/li>\n\n\n\n<li><p>Chi ph\u00ed hi\u1ec7u qu\u1ea3 nh\u01b0ng kh\u00f4ng ph\u00f9 h\u1ee3p cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed9ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>VOA t\u1ef1 \u0111\u1ed9ng (AVOA)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110i\u1ec1u ch\u1ec9nh m\u1ee9c suy hao \u0111\u1ed9ng theo th\u1eddi gian th\u1ef1c<\/p><\/li>\n\n\n\n<li><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng quang th\u00f4ng minh v\u00e0 m\u1ea1ng quang th\u00edch nghi<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea3m b\u1ea3o m\u1ee9c t\u00edn hi\u1ec7u \u1ed5n \u0111\u1ecbnh d\u01b0\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n thay \u0111\u1ed5i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>VOA n\u1ed1i ti\u1ebfp<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t tr\u1ef1c ti\u1ebfp v\u00e0o \u0111\u01b0\u1eddng truy\u1ec1n c\u00e1p quang<\/p><\/li>\n\n\n\n<li><p>Ph\u1ed5 bi\u1ebfn trong c\u00e1c tri\u1ec3n khai t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng v\u0129nh vi\u1ec5n<\/p><\/li>\n\n\n\n<li><p>Cung c\u1ea5p m\u1ee9c suy hao \u1ed5n \u0111\u1ecbnh ngay tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>VOA t\u00edch h\u1ee3p module<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n trong c\u00e1c <a href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\" target=\"_self\">b\u1ed9 thu ph\u00e1t<\/a> ho\u1eb7c h\u1ec7 th\u1ed1ng quang<\/p><\/li>\n\n\n\n<li><p>Cho ph\u00e9p ki\u1ec3m so\u00e1t c\u00f4ng su\u1ea5t t\u1ef1 \u0111\u1ed9ng m\u00e0 kh\u00f4ng c\u1ea7n th\u00e0nh ph\u1ea7n b\u00ean ngo\u00e0i<\/p><\/li>\n\n\n\n<li><p>Ph\u1ed5 bi\u1ebfn trong c\u00e1c h\u1ec7 th\u1ed1ng DWDM cao c\u1ea5p v\u00e0 <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/roadm-reconfigurable-optical-add-drop-multiplexer-guide\/\" target=\"_blank\" rel=\"\">ROADM<\/a> architectures<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>VOA d\u1ef1a tr\u00ean c\u00f4ng ngh\u1ec7 MEMS<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>D\u1ef1a tr\u00ean c\u00f4ng ngh\u1ec7 h\u1ec7 th\u1ed1ng c\u01a1-\u0111i\u1ec7n t\u1eed vi m\u00f4<\/p><\/li>\n\n\n\n<li><p>\u0110em l\u1ea1i \u0111\u1ed9 ch\u00ednh x\u00e1c cao, t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i nhanh v\u00e0 \u0111\u1ed9 tin c\u1eady d\u00e0i h\u1ea1n<\/p><\/li>\n\n\n\n<li><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c h\u1ec7 th\u1ed1ng DWDM v\u00e0 m\u1ea1ng quang c\u00f3 th\u1ec3 c\u1ea5u h\u00ecnh l\u1ea1i<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd39 C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc khi ch\u1ecdn VOA ph\u00f9 h\u1ee3p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ch\u1ecdn VOA ph\u00f9 h\u1ee3p nh\u1ea5t, h\u00e3y xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 k\u1ef9 thu\u1eadt sau \u0111\u00e2y:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Lo\u1ea1i module quang<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c \u0111\u1ecbnh xem b\u1ea1n \u0111ang s\u1eed d\u1ee5ng <a href=\"https:\/\/www.l-p.com\/products\/476763.htm\" target=\"_self\">SFP<\/a>, <a href=\"https:\/\/www.l-p.com\/products\/475586.htm\" target=\"_self\">SFP+<\/a>, <a href=\"https:\/\/www.l-p.com\/products\/473115.htm\" target=\"_self\">QSFP<\/a>, or <a href=\"https:\/\/www.l-p.com\/products\/489213.htm\" target=\"_self\">module quang DWDM<\/a><\/p><\/li>\n\n\n\n<li><p>X\u00e1c minh gi\u1edbi h\u1ea1n c\u00f4ng su\u1ea5t \u0111\u1ea7u ra b\u1ed9 ph\u00e1t v\u00e0 \u0111\u1ed9 nh\u1ea1y b\u1ed9 thu<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kho\u1ea3ng c\u00e1ch li\u00ean k\u1ebft<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch ng\u1eafn th\u01b0\u1eddng y\u00eau c\u1ea7u suy hao do c\u00f4ng su\u1ea5t nh\u1eadn \u0111\u01b0\u1ee3c qu\u00e1 cao<\/p><\/li>\n\n\n\n<li><p>C\u00e1c li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch d\u00e0i c\u00f3 th\u1ec3 kh\u00f4ng c\u1ea7n th\u00eam suy hao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u00e2n t\u00edch ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t<\/strong><br>T\u00ednh to\u00e1n c\u1ea9n th\u1eadn t\u1ed5ng ng\u00e2n s\u00e1ch quang c\u1ee7a li\u00ean k\u1ebft, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t ph\u00e1t (Tx)<\/p><\/li>\n\n\n\n<li><p>T\u1ed5n hao suy hao s\u1ee3i quang<\/p><\/li>\n\n\n\n<li><p>T\u1ed5n hao \u0111\u1ea7u n\u1ed1i v\u00e0 m\u1ed1i n\u1ed1i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/strong> Lu\u00f4n ch\u1ecdn VOA c\u00f3 d\u1ea3i suy hao \u0111\u1ee7 d\u01b0 (th\u01b0\u1eddng l\u00e0 3\u20135 dB) so v\u1edbi y\u00eau c\u1ea7u t\u00ednh to\u00e1n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2705 Danh s\u00e1ch ki\u1ec3m tra k\u1ef9 thu\u1eadt th\u1ef1c t\u1ebf<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2714 \u0110o c\u00f4ng su\u1ea5t quang th\u1ef1c t\u1ebf nh\u1eadn \u0111\u01b0\u1ee3c<\/p><\/li>\n\n\n\n<li><p>\u2714 So s\u00e1nh v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a module<\/p><\/li>\n\n\n\n<li><p>\u2714 Ch\u1ecdn d\u1ea3i suy hao c\u00f3 d\u1ef1 ph\u00f2ng (v\u00ed d\u1ee5: +3 dB)<\/p><\/li>\n\n\n\n<li><p>\u2714 \u0110\u1ea3m b\u1ea3o t\u01b0\u01a1ng th\u00edch b\u01b0\u1edbc s\u00f3ng (1310 \/ 1550 nm)<\/p><\/li>\n\n\n\n<li><p>\u2714 Ch\u1ecdn t\u1ed1c \u0111\u1ed9 \u0111\u00e1p \u1ee9ng ph\u00f9 h\u1ee3p (s\u1eed d\u1ee5ng t\u0129nh hay \u0111\u1ed9ng)<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe6 C\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c VOA gi\u1ea3i quy\u1ebft trong li\u00ean k\u1ebft quang<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c tri\u1ec3n khai c\u00e1p quang th\u1ef1c t\u1ebf, c\u00f4ng su\u1ea5t t\u00edn hi\u1ec7u kh\u00f4ng lu\u00f4n kh\u1edbp ho\u00e0n h\u1ea3o v\u1edbi y\u00eau c\u1ea7u c\u1ee7a b\u1ed9 thu quang v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u1ea1ng. S\u1ef1 bi\u1ebfn thi\u00ean v\u1ec1 kho\u1ea3ng c\u00e1ch li\u00ean k\u1ebft, c\u00f4ng su\u1ea5t \u0111\u1ea7u ra b\u1ed9 ph\u00e1t v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 hi\u1ec7u n\u0103ng l\u00e0m suy gi\u1ea3m \u0111\u1ed9 tin c\u1eady m\u1ea1ng. B\u1ed9 suy hao quang bi\u1ebfn \u0111\u1ed5i (VOA) cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh x\u00e1c v\u00e0 linh ho\u1ea1t \u0111\u1ec3 qu\u1ea3n l\u00fd nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y b\u1eb1ng c\u00e1ch ki\u1ec3m so\u00e1t m\u1ee9c c\u00f4ng su\u1ea5t quang v\u00e0 \u1ed5n \u0111\u1ecbnh h\u00e0nh vi t\u00edn hi\u1ec7u tr\u00ean to\u00e0n b\u1ed9 li\u00ean k\u1ebft.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b900e4289f2d42cb8e322ae9e4f41d10.jpg\" alt=\"Common Problems Solved by VOA in Optical Links\" class=\"wp-image-2567\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b900e4289f2d42cb8e322ae9e4f41d10.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b900e4289f2d42cb8e322ae9e4f41d10-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b900e4289f2d42cb8e322ae9e4f41d10-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b900e4289f2d42cb8e322ae9e4f41d10-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/b900e4289f2d42cb8e322ae9e4f41d10-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Hi\u1ec7n t\u01b0\u1ee3ng b\u00e3o h\u00f2a b\u1ed9 thu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u0103n ch\u1eb7n c\u00f4ng su\u1ea5t qu\u00e1 m\u1ee9c g\u00e2y h\u01b0 h\u1ea1i b\u1ed9 thu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng su\u1ea5t quang qu\u00e1 m\u1ee9c \u1edf \u0111\u1ea7u m\u00e1y thu c\u00f3 th\u1ec3 g\u00e2y b\u00e3o h\u00f2a b\u1ed9 d\u00f2 quang, d\u1eabn \u0111\u1ebfn c\u1eaft t\u00edn hi\u1ec7u, t\u0103ng t\u1ef7 l\u1ec7 l\u1ed7i bit (BER) v\u00e0 c\u00f3 th\u1ec3 g\u00e2y h\u01b0 h\u1ea1i l\u00e2u d\u00e0i cho m\u00f4-\u0111un quang. V\u1ea5n \u0111\u1ec1 n\u00e0y \u0111\u1eb7c bi\u1ec7t ph\u1ed5 bi\u1ebfn trong c\u00e1c li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch ng\u1eafn, n\u01a1i s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 ph\u00e1t quang c\u00f3 c\u00f4ng su\u1ea5t cao. M\u1ed9t b\u1ed9 suy hao quang \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c (VOA) gi\u1ea3m c\u00f4ng su\u1ea5t quang \u0111\u1ea7u v\u00e0o xu\u1ed1ng m\u1ee9c an to\u00e0n, b\u1ea3o v\u1ec7 m\u00e1y thu v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t li\u00ean k\u1ebft \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9o t\u00edn hi\u1ec7u<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Duy tr\u00ec h\u00e0nh vi t\u00edn hi\u1ec7u tuy\u1ebfn t\u00ednh \u0111\u1ec3 ph\u00e1t hi\u1ec7n ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi t\u00edn hi\u1ec7u quang ho\u1ea1t \u0111\u1ed9ng ngo\u00e0i d\u1ea3i c\u00f4ng su\u1ea5t t\u1ed1i \u01b0u c\u1ee7a ch\u00fang, ch\u00fang c\u00f3 th\u1ec3 bi\u1ec3u hi\u1ec7n h\u00e0nh vi phi tuy\u1ebfn, d\u1eabn \u0111\u1ebfn m\u00e9o d\u1ea1ng s\u00f3ng v\u00e0 suy gi\u1ea3m \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng ti\u00eau c\u1ef1c \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c d\u1eef li\u1ec7u v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng truy\u1ec1n d\u1eabn, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao. B\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh tinh vi c\u00f4ng su\u1ea5t quang, m\u1ed9t b\u1ed9 VOA gi\u00fap duy tr\u00ec \u0111\u1eb7c t\u00ednh t\u00edn hi\u1ec7u tuy\u1ebfn t\u00ednh, cho ph\u00e9p ph\u00e1t hi\u1ec7n t\u00edn hi\u1ec7u ch\u00ednh x\u00e1c v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u1ea5t c\u00e2n b\u1eb1ng c\u00f4ng su\u1ea5t trong h\u1ec7 th\u1ed1ng WDM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2n b\u1eb1ng nhi\u1ec1u k\u00eanh b\u01b0\u1edbc s\u00f3ng \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u su\u1ea5t \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/wdm-optical-transceiver-module-applications\/\">gh\u00e9p k\u00eanh ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng<\/a> Trong c\u00e1c h\u1ec7 th\u1ed1ng WDM, nhi\u1ec1u k\u00eanh quang v\u1edbi c\u00e1c b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ed3ng th\u1eddi. Do s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 c\u00f4ng su\u1ea5t ph\u00e1t ho\u1eb7c t\u1ed5n hao \u0111\u01b0\u1eddng truy\u1ec1n, m\u1ed9t s\u1ed1 k\u00eanh c\u00f3 th\u1ec3 m\u1ea1nh h\u01a1n c\u00e1c k\u00eanh kh\u00e1c, g\u00e2y ra m\u1ea5t c\u00e2n b\u1eb1ng c\u00f4ng su\u1ea5t. S\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng n\u00e0y c\u00f3 th\u1ec3 l\u00e0m suy gi\u1ea3m hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng v\u00e0 gi\u1ea3m \u0111\u1ed9 tin c\u1eady k\u00eanh. M\u1ed9t b\u1ed9 VOA \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u00e2n b\u1eb1ng m\u1ee9c c\u00f4ng su\u1ea5t k\u00eanh, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t nh\u1ea5t qu\u00e1n tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c b\u01b0\u1edbc s\u00f3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n trong ki\u1ec3m tra<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Cho ph\u00e9p th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p \u0111o ph\u00f2ng th\u00ed nghi\u1ec7m c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i v\u00e0 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 x\u00e1c nh\u1eadn h\u1ec7 th\u1ed1ng, c\u00e1c m\u1ee9c c\u00f4ng su\u1ea5t quang kh\u00f4ng nh\u1ea5t qu\u00e1n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn k\u1ebft qu\u1ea3 kh\u00f4ng \u0111\u00e1ng tin c\u1eady ho\u1eb7c kh\u00f4ng th\u1ec3 l\u1eb7p l\u1ea1i. K\u1ef9 s\u01b0 c\u1ea7n c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c hi\u1ec7u su\u1ea5t thi\u1ebft b\u1ecb, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ed9 nh\u1ea1y m\u00e1y thu v\u00e0 bi\u00ean d\u1ef1 ph\u00f2ng h\u1ec7 th\u1ed1ng. M\u1ed9t b\u1ed9 VOA cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c c\u00f4ng su\u1ea5t t\u00edn hi\u1ec7u, t\u1eeb \u0111\u00f3 h\u1ed7 tr\u1ee3 ki\u1ec3m tra chu\u1ea9n h\u00f3a, c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i v\u00e0 ph\u00e2n t\u00edch hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udfe6 K\u1ebft lu\u1eadn: V\u00ec sao VOA l\u00e0 th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi hi\u1ec7u su\u1ea5t m\u00f4-\u0111un quang<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9b874bc60fbc461bbf6749e512d777c8.jpg\" alt=\"VOA Is Essential for Optical Module Performance\" class=\"wp-image-2568\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9b874bc60fbc461bbf6749e512d777c8.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9b874bc60fbc461bbf6749e512d777c8-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9b874bc60fbc461bbf6749e512d777c8-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9b874bc60fbc461bbf6749e512d777c8-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9b874bc60fbc461bbf6749e512d777c8-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ed9 suy hao quang \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c (VOA) l\u00e0 th\u00e0nh ph\u1ea7n then ch\u1ed1t trong c\u00e1c h\u1ec7 th\u1ed1ng s\u1ee3i quang hi\u1ec7n \u0111\u1ea1i, cung c\u1ea5p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ki\u1ec3m so\u00e1t<\/strong> \u2013 \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c c\u00f4ng su\u1ea5t quang<\/p><\/li>\n\n\n\n<li><p><strong>B\u1ea3o v\u1ec7<\/strong> \u2013 ng\u0103n ng\u1eeba qu\u00e1 t\u1ea3i v\u00e0 h\u01b0 h\u1ea1i m\u00e1y thu<\/p><\/li>\n\n\n\n<li><p><strong>T\u1ed1i \u01b0u h\u00f3a<\/strong> \u2013 \u0111\u1ea3m b\u1ea3o truy\u1ec1n th\u00f4ng \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u su\u1ea5t cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u00e0 m\u00f4-\u0111un quang ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady\u2014d\u00f9 l\u00e0 trong trung t\u00e2m d\u1eef li\u1ec7u, m\u1ea1ng vi\u1ec5n th\u00f4ng hay h\u1ec7 th\u1ed1ng DWDM\u2014c\u00e1c b\u1ed9 VOA l\u00e0 c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 t\u1ed1i \u0111a h\u00f3a hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ed1i \u01b0u h\u00f3a vi\u1ec7c tri\u1ec3n khai m\u1ea1ng quang c\u1ee7a b\u1ea1n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea1t hi\u1ec7u su\u1ea5t t\u1ed1t nh\u1ea5t, \u0111i\u1ec1u thi\u1ebft y\u1ebfu l\u00e0 l\u1ef1a ch\u1ecdn VOA ph\u00f9 h\u1ee3p v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt m\u00f4-\u0111un quang, ng\u00e2n s\u00e1ch li\u00ean k\u1ebft v\u00e0 k\u1ecbch b\u1ea3n tri\u1ec3n khai c\u1ee7a b\u1ea1n. Vi\u1ec7c t\u00edch h\u1ee3p \u0111\u00fang c\u00e1ch c\u00e1c b\u1ed9 VOA c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u1ec7 th\u1ed1ng, gi\u1ea3m t\u1ef7 l\u1ec7 l\u1ed7i v\u00e0 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u00e1c th\u00e0nh ph\u1ea7n quang h\u1ecdc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 \u0110\u1ec3 t\u00ecm c\u00e1c m\u00f4-\u0111un quang ch\u1ea5t l\u01b0\u1ee3ng cao, tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p k\u1ebft n\u1ed1i \u0111\u00e1ng tin c\u1eady, h\u00e3y kh\u00e1m ph\u00e1 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a> \u0111\u1ec3 t\u00ecm c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u1ecdn c\u00e1c m\u00f4-\u0111un quang ch\u1ea5t l\u01b0\u1ee3ng cao, tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea3m b\u1ea3o thi\u1ebft k\u1ebf ng\u00e2n s\u00e1ch li\u00ean k\u1ebft ph\u00f9 h\u1ee3p<\/p><\/li>\n\n\n\n<li><p>T\u00edch h\u1ee3p VOA khi c\u1ea7n thi\u1ebft \u0111\u1ec3 v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ed9t li\u00ean k\u1ebft quang \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng t\u1ed1t l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a m\u1ed9t m\u1ea1ng hi\u1ec7u su\u1ea5t cao.<\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u b\u1ed9 suy hao quang bi\u1ebfn \u0111\u1ed5i (VOA) l\u00e0 g\u00ec, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 vai tr\u00f2 thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi module quang nh\u01b0 SFP v\u00e0 QSFP trong m\u1ea1ng s\u1ee3i quang.<\/p>","protected":false},"author":1,"featured_media":2569,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[26],"class_list":["post-2570","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\/2570","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=2570"}],"version-history":[{"count":6,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2570\/revisions"}],"predecessor-version":[{"id":10713,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2570\/revisions\/10713"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2569"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2570"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2570"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}