{"id":4190,"date":"2025-06-10T00:00:00","date_gmt":"2025-06-10T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/erbium-doped-fiber-amplifier-optical-networks\/"},"modified":"2026-06-22T09:28:48","modified_gmt":"2026-06-22T09:28:48","slug":"erbium-doped-fiber-amplifier-optical-networks","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/erbium-doped-fiber-amplifier-optical-networks","title":{"rendered":"B\u1ed9 khu\u1ebfch \u0111\u1ea1i s\u1ee3i quang pha t\u1ea1p erbium (EDFA) l\u00e0 g\u00ec trong m\u1ea1ng quang?"},"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\/f57a87bce0a545aa82151fbb8053793a.jpg\" alt=\"What is an Erbium-Doped Fiber Amplifier in Optical Networks?\" class=\"wp-image-4187\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f57a87bce0a545aa82151fbb8053793a.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f57a87bce0a545aa82151fbb8053793a-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f57a87bce0a545aa82151fbb8053793a-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f57a87bce0a545aa82151fbb8053793a-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f57a87bce0a545aa82151fbb8053793a-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t <strong>b\u1ed9 khu\u1ebfch \u0111\u1ea1i s\u1ee3i pha erbi (EDFA)<\/strong> l\u00e0 m\u1ed9t lo\u1ea1i <strong>b\u1ed9 khu\u1ebfch \u0111\u1ea1i quang<\/strong> l\u00e0m t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng truy\u1ec1n qua c\u00e1p quang. Thi\u1ebft b\u1ecb n\u00e0y s\u1eed d\u1ee5ng m\u1ed9t lo\u1ea1i s\u1ee3i \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c pha ion erbi \u0111\u1ec3 khu\u1ebfch \u0111\u1ea1i c\u00f4ng su\u1ea5t t\u00edn hi\u1ec7u m\u00e0 kh\u00f4ng c\u1ea7n chuy\u1ec3n \u0111\u1ed5i \u00e1nh s\u00e1ng th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n. B\u1ea1n d\u1ef1a v\u00e0o c\u00e1c b\u1ed9 khu\u1ebfch \u0111\u1ea1i EDFA trong c\u00e1c m\u1ea1ng quang \u0111\u1ec3 duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n th\u00f4ng \u1edf kho\u1ea3ng c\u00e1ch xa. C\u00e1c b\u1ed9 khu\u1ebfch \u0111\u1ea1i n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c t\u00edn hi\u1ec7u y\u1ebfu \u0111\u01b0\u1ee3c ph\u1ee5c h\u1ed3i l\u1ea1i c\u01b0\u1eddng \u0111\u1ed9, cho ph\u00e9p d\u1eef li\u1ec7u truy\u1ec1n \u0111i xa h\u01a1n v\u00e0 nhanh h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng quang hi\u1ec7n \u0111\u1ea1i, c\u00e1c b\u1ed9 khu\u1ebfch \u0111\u1ea1i EDFA \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t. Ch\u00fang cho ph\u00e9p <strong>truy\u1ec1n d\u1eabn d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao<\/strong> truy\u1ec1n d\u1eabn tr\u00ean nh\u1eefng kho\u1ea3ng c\u00e1ch r\u1ed9ng l\u1edbn, h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i internet, ph\u00e1t tr\u1ef1c tuy\u1ebfn video v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y. Hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a ch\u00fang khi\u1ebfn ch\u00fang tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng truy\u1ec1n th\u00f4ng to\u00e0n c\u1ea7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n ghi nh\u1edb<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c b\u1ed9 khu\u1ebfch \u0111\u1ea1i s\u1ee3i pha erbi (EDFA) l\u00e0m cho c\u00e1c t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng y\u1ebfu m\u1ea1nh h\u01a1n.<\/p><\/li><li><p>\u0110i\u1ec1u n\u00e0y gi\u00fap d\u1eef li\u1ec7u di chuy\u1ec3n xa h\u01a1n v\u00e0 nhanh h\u01a1n trong c\u00e1p quang.<\/p><\/li><li><p>C\u00f4ng ngh\u1ec7 EDFA r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi internet t\u1ed1c \u0111\u1ed9 cao, ph\u00e1t tr\u1ef1c tuy\u1ebfn video v\u00e0 \u1ee9ng d\u1ee5ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y.<\/p><\/li><li><p>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a m\u1ed9t b\u1ed9 khu\u1ebfch \u0111\u1ea1i EDFA g\u1ed3m s\u1ee3i pha erbi, laser b\u01a1m v\u00e0 m\u1ed9t <strong>WDM<\/strong>.<\/p><\/li><li><p>C\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y ph\u1ed1i h\u1ee3p v\u1edbi nhau \u0111\u1ec3 l\u00e0m cho t\u00edn hi\u1ec7u m\u1ea1nh h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p><\/li><li><p>C\u00e1c b\u1ed9 khu\u1ebfch \u0111\u1ea1i EDFA ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t \u1edf b\u01b0\u1edbc s\u00f3ng 1550 nm, n\u01a1i s\u1ee3i quang suy hao t\u00edn hi\u1ec7u \u00edt nh\u1ea5t.<\/p><\/li><li><p>C\u00e1c th\u1ebf h\u1ec7 EDFA trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 bao g\u1ed3m b\u1ed9 khu\u1ebfch \u0111\u1ea1i b\u0103ng th\u00f4ng r\u1ed9ng v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng l\u01b0\u1ee3ng t\u1eed.<\/p><\/li><li><p>Nh\u1eefng thay \u0111\u1ed5i n\u00e0y c\u00f3 th\u1ec3 gi\u00fap vi\u1ec7c g\u1eedi d\u1eef li\u1ec7u nhanh h\u01a1n v\u00e0 an to\u00e0n h\u01a1n.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 khu\u1ebfch \u0111\u1ea1i s\u1ee3i pha erbi l\u00e0 g\u00ec?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t <strong>b\u1ed9 khu\u1ebfch \u0111\u1ea1i s\u1ee3i pha erbi (EDFA)<\/strong> ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u quang th\u00f4ng qua m\u1ed9t qu\u00e1 tr\u00ecnh g\u1ecdi l\u00e0 ph\u00e1t x\u1ea1 k\u00edch th\u00edch. B\u1ea1n s\u1ebd th\u1ea5y r\u1eb1ng c\u01a1 ch\u1ebf n\u00e0y d\u1ef1a v\u00e0o c\u00e1c ion erbi \u0111\u01b0\u1ee3c nh\u00fang trong s\u1ee3i \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng. Khi c\u00e1c t\u00edn hi\u1ec7u quang \u0111i qua s\u1ee3i pha erbi, c\u00e1c ion n\u00e0y t\u01b0\u01a1ng t\u00e1c v\u1edbi \u00e1nh s\u00e1ng \u0111\u1ea7u v\u00e0o, l\u00e0m t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a n\u00f3 m\u00e0 kh\u00f4ng chuy\u1ec3n \u0111\u1ed5i sang t\u00edn hi\u1ec7u \u0111i\u1ec7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00e1 tr\u00ecnh khu\u1ebfch \u0111\u1ea1i b\u1eaft \u0111\u1ea7u t\u1eeb m\u1ed9t laser b\u01a1m. Laser n\u00e0y ti\u00eam n\u0103ng l\u01b0\u1ee3ng v\u00e0o s\u1ee3i pha erbi, k\u00edch th\u00edch c\u00e1c ion erbi l\u00ean c\u00e1c tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng cao h\u01a1n. Khi c\u00e1c t\u00edn hi\u1ec7u quang di chuy\u1ec3n qua s\u1ee3i, c\u00e1c ion \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00edch th\u00edch gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng t\u00edch tr\u1eef d\u01b0\u1edbi d\u1ea1ng \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c t\u00edn hi\u1ec7u y\u1ebfu \u0111\u01b0\u1ee3c ph\u1ee5c h\u1ed3i l\u1ea1i c\u01b0\u1eddng \u0111\u1ed9, cho ph\u00e9p truy\u1ec1n th\u00f4ng \u1edf kho\u1ea3ng c\u00e1ch xa v\u1edbi t\u1ed5n hao t\u1ed1i thi\u1ec3u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u th\u00e0nh ph\u1ea7n ph\u1ed1i h\u1ee3p v\u1edbi nhau \u0111\u1ec3 l\u00e0m cho c\u01a1 ch\u1ebf n\u00e0y ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3. S\u1ee3i pha erbi \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u00f4i tr\u01b0\u1eddng khu\u1ebfch \u0111\u1ea1i. C\u00e1c laser b\u01a1m cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng c\u1ea7n thi\u1ebft, trong khi <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/wdm-optical-transceiver-module-applications\/\"><strong>b\u1ed9 gh\u00e9p k\u00eanh ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng (WDM)<\/strong><\/a> k\u1ebft h\u1ee3p \u00e1nh s\u00e1ng b\u01a1m v\u00e0 t\u00edn hi\u1ec7u quang. C\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t khu\u1ebfch \u0111\u1ea1i cao v\u00e0 nhi\u1ec5u th\u1ea5p, khi\u1ebfn c\u00e1c b\u1ed9 khu\u1ebfch \u0111\u1ea1i EDFA tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u1ea1ng quang.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\ud83d\udccc<br> <strong>B\u1ea1n c\u00f3 bi\u1ebft kh\u00f4ng?<\/strong> D\u1eef li\u1ec7u th\u1ef1c nghi\u1ec7m cho th\u1ea5y c\u00e1c b\u1ed9 khu\u1ebfch \u0111\u1ea1i EDFA c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ed9 l\u1ee3i l\u00ean \u0111\u1ebfn 51 dB v\u1edbi h\u1ec7 s\u1ed1 nhi\u1ec5u th\u1ea5p t\u1edbi 3,1 dB, ch\u1ee9ng minh hi\u1ec7u qu\u1ea3 \u0111\u00e1ng kinh ng\u1ea1c c\u1ee7a ch\u00fang trong khu\u1ebfch \u0111\u1ea1i quang.<\/p><\/blockquote>\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\/937e5be9e03a4491b51900cdcc8413d4.jpg\" alt=\"erbium-doped fiber amplifier (EDFA)\" class=\"wp-image-4188\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/937e5be9e03a4491b51900cdcc8413d4.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/937e5be9e03a4491b51900cdcc8413d4-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/937e5be9e03a4491b51900cdcc8413d4-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/937e5be9e03a4491b51900cdcc8413d4-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/937e5be9e03a4491b51900cdcc8413d4-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>B\u01a1m:<\/strong> M\u1ed9t laser b\u01a1m c\u00f4ng su\u1ea5t cao (th\u01b0\u1eddng \u1edf b\u01b0\u1edbc s\u00f3ng 980 nm ho\u1eb7c 1480 nm) k\u00edch th\u00edch c\u00e1c ion erbi trong s\u1ee3i pha \u0111\u1ec3 \u0111\u01b0a ch\u00fang l\u00ean tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng cao h\u01a1n.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u0110\u1ea7u v\u00e0o t\u00edn hi\u1ec7u:<\/strong> T\u00edn hi\u1ec7u d\u1eef li\u1ec7u quang y\u1ebfu (trong d\u1ea3i C: 1530\u20131565 nm ho\u1eb7c d\u1ea3i L: 1565\u20131625 nm) \u0111i v\u00e0o s\u1ee3i pha.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Ph\u00e1t x\u1ea1 k\u00edch th\u00edch:<\/strong> Khi c\u00e1c photon t\u1eeb t\u00edn hi\u1ec7u d\u1eef li\u1ec7u t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c ion erbi \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00edch th\u00edch, ch\u00fang k\u00edch ho\u1ea1t c\u00e1c ion n\u00e0y r\u01a1i xu\u1ed1ng tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng th\u1ea5p h\u01a1n. \u0110\u1eb7c bi\u1ec7t, s\u1ef1 r\u01a1i n\u00e0y gi\u1ea3i ph\u00f3ng <em>c\u00e1c photon m\u1edbi<\/em> c\u00f3 \u0111\u1eb7c t\u00ednh <em>gi\u1ed1ng h\u1ec7t<\/em> c\u00e1c photon t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o v\u1ec1 b\u01b0\u1edbc s\u00f3ng, pha v\u00e0 h\u01b0\u1edbng lan truy\u1ec1n. \u0110\u00e2y l\u00e0 <strong>s\u1ef1 ph\u00e1t x\u1ea1 k\u00edch th\u00edch<\/strong>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u0110\u1ea7u ra \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i:<\/strong> Qu\u00e1 tr\u00ecnh n\u00e0y lan truy\u1ec1n li\u00ean ti\u1ebfp, t\u1ea1o ra t\u00edn hi\u1ec7u \u0111\u1ea7u ra \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i \u0111\u00e1ng k\u1ec3 mang theo d\u1eef li\u1ec7u g\u1ed1c, ho\u00e0n to\u00e0n trong mi\u1ec1n quang \u2014 kh\u00f4ng c\u1ea7n chuy\u1ec3n \u0111\u1ed5i sang \u0111i\u1ec7n.<\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a b\u1ed9 khu\u1ebfch \u0111\u1ea1i s\u1ee3i pha erbi<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>S\u1ee3i pha erbi:<\/strong> Th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i ch\u1ee9a c\u00e1c ion erbi nh\u1eb1m khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u quang \u0111\u1ea7u v\u00e0o (\u0111\u1eb7c bi\u1ec7t \u1edf v\u00f9ng 1550 nm) th\u00f4ng qua ph\u00e1t x\u1ea1 k\u00edch th\u00edch. \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng hi\u1ec7u qu\u1ea3, s\u1ee3i n\u00e0y r\u1ea5t ph\u00f9 h\u1ee3p cho truy\u1ec1n th\u00f4ng kho\u1ea3ng c\u00e1ch xa. Vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9 l\u1ee3i ch\u00ednh x\u00e1c (v\u00ed d\u1ee5: th\u00f4ng qua c\u00e1c v\u00f2ng ph\u1ea3n h\u1ed3i quang h\u1ecdc to\u00e0n ph\u1ea7n 8 k\u00eanh) n\u00e2ng cao \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 gi\u1ea3m nhi\u1ec5u.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Laser b\u01a1m:<\/strong> Cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng \u0111\u1ec3 k\u00edch th\u00edch c\u00e1c ion erbi. Laser 980 nm \u0111\u01b0\u1ee3c \u01b0u ti\u00ean h\u01a1n laser 1480 nm do nhi\u1ec5u v\u00e0 y\u00eau c\u1ea7u nhi\u1ec7t th\u1ea5p h\u01a1n. \u0110\u1ed9 tin c\u1eady cao c\u1ee7a laser 980 nm \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh: t\u1ef7 l\u1ec7 l\u1ed7i 110 FIT (\u0111\u1ed9 tin c\u1eady 60%, c\u1ea3i thi\u1ec7n t\u1eeb 180 FIT) v\u00e0 th\u1eddi gian trung b\u00ecnh gi\u1eefa hai l\u1ea7n h\u1ecfng (MTTF) v\u01b0\u1ee3t qu\u00e1 2 tri\u1ec7u gi\u1edd, h\u1ed7 tr\u1ee3 tu\u1ed5i th\u1ecd d\u00e0i cho b\u1ed9 khu\u1ebfch \u0111\u1ea1i.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>WDM (B\u1ed9 gh\u00e9p k\u00eanh ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng):<\/strong> K\u1ebft h\u1ee3p hi\u1ec7u qu\u1ea3 \u00e1nh s\u00e1ng b\u01a1m v\u1edbi t\u00edn hi\u1ec7u quang \u0111\u1ed3ng th\u1eddi gi\u1eef nguy\u00ean t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a ch\u00fang. C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quan tr\u1ecdng bao g\u1ed3m: H\u1ec7 s\u1ed1 khu\u1ebfch \u0111\u1ea1i ch\u00eanh l\u1ec7ch t\u1ed1i thi\u1ec3u (Minimum Differential Mode Gain) l\u00e0 0,14 dB, H\u1ec7 s\u1ed1 khu\u1ebfch \u0111\u1ea1i ch\u00eanh l\u1ec7ch t\u1ed5ng th\u1ec3 (Overall DMG) l\u00e0 1,59 dB v\u00e0 T\u1ef7 s\u1ed1 t\u00edn hi\u1ec7u tr\u00ean nhi\u1ec5u quang (OSNR) l\u00e0 13,89 dB sau 8 giai \u0111o\u1ea1n truy\u1ec1n d\u1eabn. Thi\u1ebft b\u1ecb n\u00e0y cho ph\u00e9p truy\u1ec1n d\u1eabn kh\u1ea3 thi \u1edf kho\u1ea3ng c\u00e1ch 1000 km \u0111\u1ed1i v\u1edbi t\u00edn hi\u1ec7u DP-QPSK 100 Gb\/s. M\u1eb9o: H\u00e3y ch\u1ecdn c\u00e1c b\u1ed9 WDM c\u00f3 h\u1ec7 s\u1ed1 DMG cao v\u00e0 nhi\u1ec5u th\u1ea5p \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>C\u00e1c \u01b0u \u0111i\u1ec3m c\u1ee7a EDFA trong m\u1ea1ng quang<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u1ed9 khu\u1ebfch \u0111\u1ea1i s\u1ee3i quang pha t\u1ea1p erbium (EDFAs)<\/strong> \u0111\u00e3 tr\u1edf th\u00e0nh c\u00f4ng ngh\u1ec7 khu\u1ebfch \u0111\u1ea1i quang chi\u1ebfm \u01b0u th\u1ebf nh\u1edd nhi\u1ec1u \u01b0u \u0111i\u1ec3m then ch\u1ed1t, ph\u00f9 h\u1ee3p ho\u00e0n h\u1ea3o v\u1edbi <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>b\u1ed9 thu ph\u00e1t quang<\/strong><\/a> c\u00e1c d\u1ea3i t\u1ea7n s\u1ed1 truy\u1ec1n th\u00f4ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>\u0110\u1ed9 l\u1ee3i cao:<\/strong> Cung c\u1ea5p m\u1ee9c t\u0103ng c\u01b0\u1eddng t\u00edn hi\u1ec7u \u0111\u00e1ng k\u1ec3 (th\u01b0\u1eddng t\u1eeb 15\u201340 dB).<\/p><\/li><li><p style=\"margin: 0px;\"><strong>H\u1ec7 s\u1ed1 nhi\u1ec5u th\u1ea5p:<\/strong> Gi\u1ea3m thi\u1ec3u suy gi\u1ea3m t\u1ef7 s\u1ed1 t\u00edn hi\u1ec7u tr\u00ean nhi\u1ec5u (SNR), r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi truy\u1ec1n d\u1eabn \u0111\u01b0\u1eddng d\u00e0i. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u \u1edf kho\u1ea3ng c\u00e1ch v\u01b0\u1ee3t xa gi\u1edbi h\u1ea1n c\u1ee7a m\u1ed9t <strong>b\u1ed9 thu ph\u00e1t quang<\/strong>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u0110\u1ed9 trong su\u1ed1t theo b\u01b0\u1edbc s\u00f3ng:<\/strong> Khu\u1ebfch \u0111\u1ea1i \u0111\u1ed3ng th\u1eddi nhi\u1ec1u b\u01b0\u1edbc s\u00f3ng trong d\u1ea3i ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u00fang (ch\u1ee7 y\u1ebfu l\u00e0 d\u1ea3i C, ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn h\u01a1n l\u00e0 d\u1ea3i L), khi\u1ebfn ch\u00fang tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho <strong>\u0110a b\u01b0\u1edbc s\u00f3ng m\u1eadt \u0111\u1ed9 cao (DWDM)<\/strong> c\u00e1c h\u1ec7 th\u1ed1ng n\u01a1i c\u00f3 nhi\u1ec1u <strong>b\u1ed9 thu ph\u00e1t quang<\/strong> k\u00eanh t\u1ed3n t\u1ea1i song song.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m v\u1edbi nhi\u1ec5u xuy\u00ean k\u00eanh:<\/strong> Th\u1ec3 hi\u1ec7n m\u1ee9c \u0111\u1ed9 can nhi\u1ec5u t\u1ed1i thi\u1ec3u gi\u1eefa c\u00e1c k\u00eanh b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>C\u00f4ng su\u1ea5t \u0111\u1ea7u ra cao:<\/strong> C\u00f3 kh\u1ea3 n\u0103ng \u0111\u01b0a c\u00e1c t\u00edn hi\u1ec7u m\u1ea1nh tr\u1edf l\u1ea1i s\u1ee3i quang.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Ho\u1ea1t \u0111\u1ed9ng ho\u00e0n to\u00e0n b\u1eb1ng quang:<\/strong> Tr\u00e1nh \u0111\u01b0\u1ee3c c\u00e1c \u0111i\u1ec3m ngh\u1ebdn \u0111i\u1ec7n t\u1eed v\u00e0 ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t li\u00ean quan \u0111\u1ebfn qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i quang\u2013\u0111i\u1ec7n\u2013quang (O-E-O).<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>C\u00e1c th\u00f4ng s\u1ed1 v\u00e0 \u0111\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt ch\u00ednh c\u1ee7a EDFA<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"420\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e9af1a1494a04a4dbcd4f63142f51979.jpg\" alt=\"EDFA\" class=\"wp-image-4189\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e9af1a1494a04a4dbcd4f63142f51979.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e9af1a1494a04a4dbcd4f63142f51979-300x105.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e9af1a1494a04a4dbcd4f63142f51979-1024x358.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e9af1a1494a04a4dbcd4f63142f51979-768x269.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/e9af1a1494a04a4dbcd4f63142f51979-18x6.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Selecting the right <strong>B\u1ed9 khu\u1ebfch \u0111\u1ea1i EDFA<\/strong> y\u00eau c\u1ea7u hi\u1ec3u r\u00f5 c\u00e1c \u0111\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt c\u1ee7a n\u00f3. Hi\u1ec7u n\u0103ng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 t\u00f9y theo \u1ee9ng 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;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p><strong>Th\u00f4ng s\u1ed1 EDFA<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>B\u1ed9 khu\u1ebfch \u0111\u1ea1i t\u0103ng c\u01b0\u1eddng (Booster Amplifier)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>B\u1ed9 khu\u1ebfch \u0111\u1ea1i \u0111\u1eb7t gi\u1eefa tuy\u1ebfn (In-Line Amplifier)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>B\u1ed9 khu\u1ebfch \u0111\u1ea1i ti\u1ec1n khu\u1ebfch \u0111\u1ea1i (Pre-Amplifier)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>T\u00e1c \u0111\u1ed9ng ch\u00ednh<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Vai tr\u00f2 ch\u00ednh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01b0a c\u00f4ng su\u1ea5t cao v\u00e0o s\u1ee3i quang<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u00f9 t\u1ed5n hao \u0111o\u1ea1n truy\u1ec1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u nh\u1eadn (Rx) y\u1ebfu<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Quy\u1ebft \u0111\u1ecbnh v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt then ch\u1ed1t<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ed9 l\u1ee3i (Gain)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung b\u00ecnh (15\u201325 dB)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao (20\u201335 dB)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>R\u1ea5t cao (30\u201340+ dB)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Quy\u1ebft \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>C\u00f4ng su\u1ea5t \u0111\u1ea7u ra<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>R\u1ea5t cao<\/strong> (17\u201323 dBm+)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao (10\u201318 dBm)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung b\u00ecnh (10\u201315 dBm)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Quy \u0111\u1ecbnh c\u00f4ng su\u1ea5t ph\u00e1t v\u00e0 t\u1ea7m xa; r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi <strong>c\u00e1c m\u1ea1ng quang \u0111\u01b0\u1eddng d\u00e0i<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>H\u1ec7 s\u1ed1 nhi\u1ec5u (Noise Figure \u2013 NF)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung b\u00ecnh (5\u20137 dB)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Th\u1ea5p<\/strong> (4\u20136 dB)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Si\u00eau th\u1ea5p<\/strong> (3\u20135 dB)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Quan tr\u1ecdng \u0111\u1ed1i v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u; h\u1ec7 s\u1ed1 nhi\u1ec5u c\u00e0ng th\u1ea5p th\u00ec \u0111\u1ed9 nh\u1ea1y nh\u1eadn (Rx sensitivity) c\u00e0ng t\u1ed1t cho <strong>b\u1ed9 thu ph\u00e1t quang<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u1ee8ng d\u1ee5ng ch\u00ednh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u00eda ph\u00e1t (Tx), sau ngu\u1ed3n laser<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u1ede gi\u1eefa \u0111o\u1ea1n truy\u1ec1n trong c\u00e1c tuy\u1ebfn d\u00e0i<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u00eda nh\u1eadn (Rx), tr\u01b0\u1edbc b\u1ed9 d\u00f2<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><span class=\"qc-p1-tag\">T\u1ed1i \u01b0u h\u00f3a ng\u00e2n s\u00e1ch tuy\u1ebfn cho <strong>b\u1ed9 thu ph\u00e1t quang t\u1ed1c \u0111\u1ed9 cao<\/strong> hi\u1ec7u su\u1ea5t<br><\/span><\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>C\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a EDFA trong m\u1ea1ng quang<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00f4ng ngh\u1ec7 EDFA<\/strong> L\u00e0 n\u1ec1n t\u1ea3ng cho h\u1ea7u h\u1ebft m\u1ecdi h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng quang kho\u1ea3ng c\u00e1ch xa v\u00e0 dung l\u01b0\u1ee3ng cao:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>Truy\u1ec1n d\u1eabn \u0111\u01b0\u1eddng d\u00e0i v\u00e0 d\u01b0\u1edbi bi\u1ec3n:<\/strong> Thi\u1ebft y\u1ebfu \u0111\u1ec3 b\u1eafc qua h\u00e0ng ngh\u00ecn kil\u00f4m\u00e9t d\u01b0\u1edbi \u0111\u1ea1i d\u01b0\u01a1ng v\u00e0 l\u1ee5c \u0111\u1ecba m\u00e0 kh\u00f4ng c\u1ea7n c\u00e1c tr\u1ea1m t\u00e1i t\u1ea1o t\u1ed1n k\u00e9m. <strong>EDFA cho truy\u1ec1n d\u1eabn \u0111\u01b0\u1eddng d\u00e0i<\/strong> L\u00e0 y\u1ebfu t\u1ed1 b\u1eaft bu\u1ed9c.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>M\u1ea1ng \u0111\u00f4 th\u1ecb v\u00e0 v\u00f9ng mi\u1ec1n:<\/strong> K\u1ebft n\u1ed1i c\u00e1c th\u00e0nh ph\u1ed1 v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u tr\u00ean kho\u1ea3ng c\u00e1ch h\u00e0ng tr\u0103m kil\u00f4m\u00e9t, t\u1ea1o n\u1ec1n t\u1ea3ng cho c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng <strong>m\u1ea1ng quang v\u1eefng ch\u1eafc<\/strong>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u0110a ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng m\u1eadt \u0111\u1ed9 cao (DWDM):<\/strong> L\u00f5i c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng DWDM, khu\u1ebfch \u0111\u1ea1i \u0111\u1ed3ng th\u1eddi h\u00e0ng ch\u1ee5c ho\u1eb7c h\u00e0ng tr\u0103m k\u00eanh, t\u1ed1i \u0111a h\u00f3a dung l\u01b0\u1ee3ng s\u1ee3i quang v\u00e0 h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i <strong>b\u1ed9 thu ph\u00e1t quang<\/strong> d\u1ecbch v\u1ee5 kh\u00e1c nhau.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Truy\u1ec1n h\u00ecnh c\u00e1p (CATV):<\/strong> Ph\u00e2n ph\u1ed1i t\u00edn hi\u1ec7u video RF t\u01b0\u01a1ng t\u1ef1 ho\u1eb7c k\u1ef9 thu\u1eadt s\u1ed1 qua m\u1ea1ng c\u00e1p quang.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u0110\u01b0\u1eddng x\u01b0\u01a1ng s\u1ed1ng FTTH (Fiber-to-the-Home):<\/strong> Khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u ph\u1ee5c v\u1ee5 ph\u00e2n ph\u1ed1i trong c\u00e1c m\u1ea1ng quang th\u1ee5 \u0111\u1ed9ng quy m\u00f4 l\u1edbn <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/aon-vs-pon-optical-networks\/\"><strong>(PONs)<\/strong><\/a>.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Nhu c\u1ea7u ng\u00e0y c\u00e0ng t\u0103ng v\u1ec1 truy\u1ec1n th\u00f4ng t\u1ed1c \u0111\u1ed9 cao l\u00e0m n\u1ed5i b\u1eadt vai tr\u00f2 quan tr\u1ecdng c\u1ee7a EDFA trong vi\u1ec7c \u0111\u1ecbnh h\u00ecnh t\u01b0\u01a1ng lai c\u1ee7a m\u1ea1ng quang. Kh\u1ea3 n\u0103ng khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u tr\u1ef1c ti\u1ebfp c\u1ee7a ch\u00fang g\u00f3p ph\u1ea7n n\u00e2ng cao kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>Xu h\u01b0\u1edbng t\u01b0\u01a1ng lai c\u1ee7a c\u00f4ng ngh\u1ec7 EDFA<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 EDFA \u0111\u00e3 tr\u01b0\u1edfng th\u00e0nh, nh\u01b0ng qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n v\u1eabn ti\u1ebfp t\u1ee5c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>L\u00e0m ph\u1eb3ng \u0111\u1ed9 l\u1ee3i:<\/strong> C\u00e1c k\u1ef9 thu\u1eadt c\u1ea3i ti\u1ebfn nh\u1eb1m khu\u1ebfch \u0111\u1ea1i \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean to\u00e0n b\u1ed9 d\u1ea3i C v\u00e0 d\u1ea3i L.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>C\u00f4ng su\u1ea5t cao h\u01a1n &amp; nhi\u1ec5u th\u1ea5p h\u01a1n:<\/strong> Ph\u00e1t tri\u1ec3n li\u00ean t\u1ee5c nh\u1eb1m k\u00e9o d\u00e0i kho\u1ea3ng c\u00e1ch truy\u1ec1n v\u00e0 t\u0103ng s\u1ed1 l\u01b0\u1ee3ng k\u00eanh.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>T\u00edch h\u1ee3p:<\/strong> K\u1ebft h\u1ee3p ch\u1ee9c n\u0103ng EDFA v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nh\u01b0 m\u00f4-\u0111un b\u00f9 t\u00e1n s\u1eafc (DCM) ho\u1eb7c b\u1ed9 chuy\u1ec3n m\u1ea1ch ch\u1ecdn l\u1ecdc b\u01b0\u1edbc s\u00f3ng (WSS) th\u00e0nh c\u00e1c thi\u1ebft b\u1ecb <strong>m\u1ea1ng quang nh\u1ecf g\u1ecdn<\/strong> Gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>M\u1edf r\u1ed9ng sang d\u1ea3i L:<\/strong> \u0110\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 dung l\u01b0\u1ee3ng c\u00f2n l\u1edbn h\u01a1n n\u1eefa ngo\u00e0i d\u1ea3i C. <strong>C\u00e1c gi\u1ea3i ph\u00e1p EDFA c\u1ee7a LINK-PP<\/strong> \u0111ang t\u00edch c\u1ef1c \u0111\u1ed5i m\u1edbi trong l\u0129nh v\u1ef1c n\u00e0y.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>FAQ<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a m\u1ed9t EDFA l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t EDFA khu\u1ebfch \u0111\u1ea1i <strong>c\u00e1c t\u00edn hi\u1ec7u quang y\u1ebfu<\/strong> trong m\u1ea1ng c\u00e1p quang. N\u00f3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 m\u1ea1nh t\u00edn hi\u1ec7u m\u00e0 kh\u00f4ng c\u1ea7n chuy\u1ec3n \u0111\u1ed5i \u00e1nh s\u00e1ng th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n, \u0111\u1ea3m b\u1ea3o vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kho\u1ea3ng c\u00e1ch xa v\u1edbi t\u1ed5n hao t\u1ed1i thi\u1ec3u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110i\u1ec1u g\u00ec l\u00e0m cho EDFA kh\u00e1c bi\u1ec7t so v\u1edbi c\u00e1c b\u1ed9 khu\u1ebfch \u0111\u1ea1i quang kh\u00e1c?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">EDFA s\u1eed d\u1ee5ng s\u1ee3i pha t\u1ea1p erbium \u0111\u1ec3 khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u \u1edf d\u1ea3i b\u01b0\u1edbc s\u00f3ng 1550 nm. D\u1ea3i b\u01b0\u1edbc s\u00f3ng n\u00e0y tr\u00f9ng kh\u1edbp v\u1edbi c\u1eeda s\u1ed5 t\u1ed5n hao th\u1ea5p c\u1ee7a s\u1ee3i quang, gi\u00fap EDFA \u0111\u1ea1t hi\u1ec7u su\u1ea5t r\u1ea5t cao trong vi\u1ec5n th\u00f4ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a m\u1ed9t EDFA l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t EDFA g\u1ed3m ba th\u00e0nh ph\u1ea7n ch\u00ednh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>S\u1ee3i pha t\u1ea1p erbium<\/strong>: Khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u.<\/p><\/li><li><p><strong>Laser b\u01a1m<\/strong>: Cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho qu\u00e1 tr\u00ecnh khu\u1ebfch \u0111\u1ea1i.<\/p><\/li><li><p><strong>B\u1ed9 gh\u00e9p k\u00eanh ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng (WDM)<\/strong>: K\u1ebft h\u1ee3p \u00e1nh s\u00e1ng b\u01a1m v\u00e0 t\u00edn hi\u1ec7u quang.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c h\u1ea1n ch\u1ebf c\u1ee7a EDFA l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">EDFA c\u00f3 d\u1ea3i \u0111\u1ed9 l\u1ee3i gi\u1edbi h\u1ea1n v\u00e0 kh\u00f4ng th\u1ec3 khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng kh\u1ea3 ki\u1ebfn. Hi\u1ec7u n\u0103ng c\u1ee7a ch\u00fang c\u0169ng ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n ch\u00ednh x\u00e1c laser b\u01a1m, v\u1ed1n c\u00f3 th\u1ec3 nh\u1ea1y c\u1ea3m v\u1edbi c\u00e1c bi\u1ebfn thi\u00ean b\u01b0\u1edbc s\u00f3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Ng\u00e0nh n\u00e0o h\u01b0\u1edfng l\u1ee3i nhi\u1ec1u nh\u1ea5t t\u1eeb EDFA?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec5n th\u00f4ng, \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o EDFA. Nh\u1eefng b\u1ed9 khu\u1ebfch \u0111\u1ea1i n\u00e0y h\u1ed7 tr\u1ee3 truy\u1ec1n d\u1eabn \u0111\u01b0\u1eddng d\u00e0i, <strong>\u0111a ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng m\u1eadt \u0111\u1ed9 cao (DWDM)<\/strong>, v\u00e0 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\ud83d\udca1 <strong>M\u1eb9o:<br><\/strong> N\u1ebfu b\u1ea1n \u0111ang t\u00ecm hi\u1ec3u v\u1ec1 m\u1ea1ng quang, vi\u1ec7c n\u1eafm r\u00f5 EDFA s\u1ebd gi\u00fap b\u1ea1n t\u1ed1i \u01b0u h\u00f3a khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u v\u00e0 hi\u1ec7u n\u0103ng m\u1ea1ng.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >Xem Th\u00eam<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/wdm-optical-transceiver-module-applications\/\">T\u00ecm hi\u1ec3u v\u1ec1 \u0110a ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\">T\u1ea7m quan tr\u1ecdng c\u1ee7a gi\u00e1m s\u00e1t k\u1ef9 thu\u1eadt s\u1ed1 trong c\u00e1c b\u1ed9 thu ph\u00e1t quang<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-transceiver-form-factors-sfp-to-qsfp28\/\">Tham gia C\u1ed9ng \u0111\u1ed3ng LINK-PP c\u1ee7a ch\u00fang t\u00f4i ngay h\u00f4m nay<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>B\u1ed9 khu\u1ebfch \u0111\u1ea1i s\u1ee3i quang pha t\u1ea1p erbium (EDFA) khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u quang trong m\u1ea1ng s\u1ee3i quang, cho ph\u00e9p truy\u1ec1n th\u00f4ng \u1edf kho\u1ea3ng c\u00e1ch xa v\u1edbi t\u1ed5n hao t\u1ed1i thi\u1ec3u v\u00e0 hi\u1ec7u su\u1ea5t cao.<\/p>","protected":false},"author":1,"featured_media":4187,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[26],"class_list":["post-4190","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\/4190","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=4190"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4190\/revisions"}],"predecessor-version":[{"id":11468,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4190\/revisions\/11468"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4187"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}