{"id":4249,"date":"2025-06-25T00:00:00","date_gmt":"2025-06-25T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/overview-of-vcsel\/"},"modified":"2026-06-22T09:24:30","modified_gmt":"2026-06-22T09:24:30","slug":"overview-of-vcsel","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/overview-of-vcsel","title":{"rendered":"T\u1ed5ng Quan V\u1ec1 VCSEL (Laze Ph\u00e1t X\u1ea1 M\u1eb7t Tr\u00ean Khoang D\u1ecdc)"},"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\/4d1e4d4f535349b5b7e3940ba8901d52.jpg\" alt=\"Vertical-Cavity Surface-Emitting Lasers\" class=\"wp-image-4246\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4d1e4d4f535349b5b7e3940ba8901d52.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4d1e4d4f535349b5b7e3940ba8901d52-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4d1e4d4f535349b5b7e3940ba8901d52-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4d1e4d4f535349b5b7e3940ba8901d52-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4d1e4d4f535349b5b7e3940ba8901d52-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Laser ph\u00e1t x\u1ea1 b\u1ec1 m\u1eb7t h\u1ed1c \u0111\u1ee9ng (VCSEL)<\/strong> l\u00e0 c\u00e1c thi\u1ebft b\u1ecb b\u00e1n d\u1eabn ti\u00ean ti\u1ebfn ph\u00e1t \u00e1nh s\u00e1ng theo h\u01b0\u1edbng vu\u00f4ng g\u00f3c v\u1edbi b\u1ec1 m\u1eb7t chip, cung c\u1ea5p m\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf nh\u1ecf g\u1ecdn v\u00e0 hi\u1ec7u qu\u1ea3 cho c\u00e1c laser ph\u00e1t x\u1ea1 c\u1ea1nh truy\u1ec1n th\u1ed1ng. V\u1edbi c\u1ea5u tr\u00fac h\u1ed1c c\u1ed9ng h\u01b0\u1edfng ng\u1eafn \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh b\u1edfi c\u00e1c g\u01b0\u01a1ng DBR c\u00f3 \u0111\u1ed9 ph\u1ea3n x\u1ea1 cao, v\u00f9ng ho\u1ea1t \u0111\u1ed9ng d\u1ea1ng gi\u1ebfng l\u01b0\u1ee3ng t\u1eed v\u00e0 c\u00e1c kh\u1ea9u \u0111\u1ed9 \u00f4x\u00edt gi\u1edbi h\u1ea1n d\u00f2ng \u0111i\u1ec7n, VCSEL mang l\u1ea1i d\u00f2ng ng\u01b0\u1ee1ng th\u1ea5p, t\u1ed1c \u0111\u1ed9 \u0111i\u1ec1u ch\u1ebf cao v\u00e0 hi\u1ec7u su\u1ea5t gh\u00e9p n\u1ed1i s\u1ee3i quang xu\u1ea5t s\u1eafc. M\u1eb7c d\u00f9 ch\u00fang v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c \u1ee9ng d\u1ee5ng kho\u1ea3ng c\u00e1ch ng\u1eafn\u2014ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ed9 thu ph\u00e1t quang trung t\u00e2m d\u1eef li\u1ec7u, h\u1ec7 th\u1ed1ng c\u1ea3m bi\u1ebfn v\u00e0 h\u00ecnh \u1ea3nh 3D ti\u00eau d\u00f9ng\u2014VCSEL l\u1ea1i b\u1ecb gi\u1edbi h\u1ea1n v\u1ec1 c\u00f4ng su\u1ea5t so v\u1edbi laser ph\u00e1t x\u1ea1 c\u1ea1nh v\u00e0 g\u1eb7p kh\u00f3 kh\u0103n \u1edf c\u00e1c b\u01b0\u1edbc s\u00f3ng d\u00e0i h\u01a1n. D\u1eabu v\u1eady, kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t, m\u1edf r\u1ed9ng quy m\u00f4 v\u00e0 hi\u1ec7u n\u0103ng c\u1ee7a VCSEL khi\u1ebfn ch\u00fang tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 thi\u1ebfu trong quang h\u1ecdc hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf00 <\/strong>VCSEL l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>Laser ph\u00e1t x\u1ea1 b\u1ec1 m\u1eb7t h\u1ed1c \u0111\u1ee9ng (VCSEL)<\/strong> l\u00e0 m\u1ed9t lo\u1ea1i \u0111i-\u00f4t laser b\u00e1n d\u1eabn ph\u00e1t \u00e1nh s\u00e1ng <strong>vu\u00f4ng g\u00f3c v\u1edbi b\u1ec1 m\u1eb7t c\u1ee7a n\u00f3<\/strong>, tr\u00e1i ng\u01b0\u1ee3c v\u1edbi c\u00e1c laser ph\u00e1t x\u1ea1 c\u1ea1nh v\u1ed1n ph\u00e1t \u00e1nh s\u00e1ng theo h\u01b0\u1edbng ngang. N\u00f3 bao g\u1ed3m m\u1ed9t h\u1ed1c c\u1ed9ng h\u01b0\u1edfng r\u1ea5t ng\u1eafn k\u1eb9p gi\u1eefa hai g\u01b0\u01a1ng ph\u1ea3n x\u1ea1 Bragg ph\u00e2n b\u1ed1 (DBR) c\u00f3 \u0111\u1ed9 ph\u1ea3n x\u1ea1 cao, \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p tr\u1ef1c ti\u1ebfp v\u00e0o t\u1ea5m wafer.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf00<\/strong>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a VCSEL<\/h2>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>G\u01b0\u01a1ng DBR<\/strong>: C\u00e1c g\u01b0\u01a1ng n\u00e0y g\u1ed3m c\u00e1c l\u1edbp v\u1eadt li\u1ec7u c\u00f3 chi\u1ebft quang kh\u00e1c nhau x\u1ebfp xen k\u1ebd, ph\u1ea3n x\u1ea1 h\u01a1n 99% \u00e1nh s\u00e1ng t\u1ea1i b\u01b0\u1edbc s\u00f3ng ph\u00e1t laser \u0111\u1ec3 t\u1ea1o th\u00e0nh h\u1ed1c quang h\u1ecdc.<\/p><\/li><li><p><strong>M\u00f4i tr\u01b0\u1eddng khu\u1ebfch \u0111\u1ea1i d\u1ea1ng gi\u1ebfng l\u01b0\u1ee3ng t\u1eed<\/strong>: V\u1eadt li\u1ec7u ho\u1ea1t t\u00ednh\u2014th\u01b0\u1eddng l\u00e0 c\u00e1c gi\u1ebfng l\u01b0\u1ee3ng t\u1eed\u2014ph\u00e1t ra photon khi \u0111\u01b0\u1ee3c b\u01a1m \u0111i\u1ec7n. \u00c1nh s\u00e1ng dao \u0111\u1ed9ng c\u1ed9ng h\u01b0\u1edfng gi\u1eefa hai g\u01b0\u01a1ng DBR cho \u0111\u1ebfn khi \u0111\u1ea1t ng\u01b0\u1ee1ng ho\u1eb7c x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng ph\u00e1t laser.<\/p><\/li><li><p><strong>Gi\u1edbi h\u1ea1n d\u00f2ng \u0111i\u1ec7n v\u00e0 \u00e1nh s\u00e1ng<\/strong>: C\u00e1c kh\u1ea9u \u0111\u1ed9 \u00f4x\u00edt ho\u1eb7c c\u00e1c v\u00f9ng c\u1ea5y proton gi\u1edbi h\u1ea1n c\u1ea3 d\u00f2ng \u0111i\u1ec7n l\u1eabn \u00e1nh s\u00e1ng, t\u1ea1o ra v\u00f9ng ph\u00e1t x\u1ea1 nh\u1ecf v\u1edbi d\u1ea1ng ch\u00f9m tr\u00f2n.<\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf00 <\/strong>\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >\u01afu \u0111i\u1ec3m c\u1ee7a VCSEL<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ki\u1ec3m tra \u1edf c\u1ea5p \u0111\u1ed9 wafer<\/strong><br\/>VCSEL c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u1ef1c ti\u1ebfp tr\u00ean wafer tr\u01b0\u1edbc khi t\u00e1ch r\u1eddi, gi\u00fap gi\u1ea3m chi ph\u00ed v\u00e0 n\u00e2ng cao t\u1ef7 l\u1ec7 th\u00e0nh ph\u1ea9m trong s\u1ea3n xu\u1ea5t.<\/p><\/li><li><p><strong>Ti\u00eau th\u1ee5 \u0111i\u1ec7n th\u1ea5p<\/strong><br\/>VCSEL y\u00eau c\u1ea7u d\u00f2ng ng\u01b0\u1ee1ng t\u1ed1i thi\u1ec3u v\u00e0 th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng \u1edf d\u1ea3i c\u00f4ng su\u1ea5t v\u00e0i miliwatt, mang l\u1ea1i hi\u1ec7u n\u0103ng ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng.<\/p><\/li><li><p><strong>Hi\u1ec7u su\u1ea5t gh\u00e9p n\u1ed1i s\u1ee3i quang cao<\/strong><br\/>Nh\u1edd ch\u00f9m tia tr\u00f2n v\u00e0 ph\u00e2n k\u1ef3 th\u1ea5p, ch\u00fang d\u1ec5 d\u00e0ng gh\u00e9p n\u1ed1i v\u00e0o s\u1ee3i quang \u0111a mode v\u1edbi t\u1ed5n hao t\u1ed1i thi\u1ec3u.<\/p><\/li><li><p><strong>T\u1ed1c \u0111\u1ed9 \u0111i\u1ec1u ch\u1ebf &amp; kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/strong><br\/>VCSEL h\u1ed7 tr\u1ee3 d\u1ea3i th\u00f4ng \u0111i\u1ec1u ch\u1ebf cao (&gt;40 GHz) v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o d\u01b0\u1edbi d\u1ea1ng m\u1ea3ng 1-D ho\u1eb7c 2-D\u2014r\u1ea5t h\u1eefu \u00edch trong c\u00e1c module vi\u1ec5n th\u00f4ng hi\u1ec7n \u0111\u1ea1i.<\/p><\/li><li><p><strong>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh theo nhi\u1ec7t \u0111\u1ed9<\/strong><br\/>Thi\u1ebft k\u1ebf ph\u00e1t x\u1ea1 b\u1ec1 m\u1eb7t cho ph\u00e9p h\u00e0nh vi b\u01b0\u1edbc s\u00f3ng \u1ed5n \u0111\u1ecbnh trong su\u1ed1t d\u1ea3i bi\u1ebfn thi\u00ean nhi\u1ec7t \u0111\u1ed9\u2014y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ea3m b\u1ea3o t\u00ednh tin c\u1eady trong truy\u1ec1n th\u00f4ng.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" ><strong> <\/strong>H\u1ea1n ch\u1ebf c\u1ee7a VCSEL<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u00f4ng su\u1ea5t c\u1ef1c \u0111\u1ea1i th\u1ea5p h\u01a1n<\/strong><br\/>VCSEL th\u01b0\u1eddng cung c\u1ea5p v\u00e0i miliwatt c\u00f4ng su\u1ea5t \u0111\u1ea7u ra, th\u1ea5p h\u01a1n so v\u1edbi laser ph\u00e1t bi\u00ean, do \u0111\u00f3 h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u01b0\u1eddng d\u00e0i.<\/p><\/li><li><p><strong>H\u1ea1n ch\u1ebf v\u1ec1 b\u01b0\u1edbc s\u00f3ng d\u00e0i<\/strong><br\/>Vi\u1ec7c s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t VCSEL c\u00f4ng su\u1ea5t cao \u1edf b\u01b0\u1edbc s\u00f3ng vi\u1ec5n th\u00f4ng (1.300\u20131.550 nm) v\u1eabn c\u00f2n g\u1eb7p nhi\u1ec1u th\u00e1ch th\u1ee9c.<\/p><\/li><li><p><strong>Th\u00e1ch th\u1ee9c v\u1ec1 \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t m\u1ea3ng<\/strong><br\/>S\u1ef1 sai l\u1ec7ch trong hi\u1ec7u n\u0103ng m\u1ea3ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng li\u00ean k\u1ebft t\u1ed5ng th\u1ec3, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c module \u0111a k\u00eanh.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf00 <\/strong>C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Truy\u1ec1n th\u00f4ng d\u1eef li\u1ec7u<\/strong>: L\u00f5i n\u1ec1n c\u1ee7a c\u00e1c b\u1ed9 thu ph\u00e1t quang (SFP, QSFP, SFP28) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng doanh nghi\u1ec7p.<\/p><\/li><li><p><strong>\u0110i\u1ec7n t\u1eed ti\u00eau d\u00f9ng<\/strong>: \u0110\u01b0\u1ee3c d\u00f9ng trong nh\u1eadn di\u1ec7n khu\u00f4n m\u1eb7t, c\u1ea3m bi\u1ebfn kho\u1ea3ng c\u00e1ch v\u00e0 ch\u1ee5p \u1ea3nh 3D cho \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 m\u00e1y t\u00ednh x\u00e1ch tay.<\/p><\/li><li><p><strong>LiDAR &amp; c\u1ea3m bi\u1ebfn \u00f4 t\u00f4<\/strong>: Cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho c\u00e1c h\u1ec7 th\u1ed1ng th\u1ecb gi\u00e1c nh\u1ecf g\u1ecdn, \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao d\u00e0nh cho xe t\u1ef1 h\u00e0nh.<\/p><\/li><li><p><strong>Thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p &amp; y sinh<\/strong>: \u0110\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong m\u00e1y in, chu\u1ed9t quang, ch\u1ea9n \u0111o\u00e1n y khoa v\u00e0 gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >V\u00ec sao VCSEL quan tr\u1ecdng trong c\u00e1c module quang<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng ngh\u1ec7 VCSEL l\u00e0m n\u1ec1n t\u1ea3ng cho hi\u1ec7u n\u0103ng c\u1ee7a nhi\u1ec1u b\u1ed9 thu ph\u00e1t quang LINK\u2011PP:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng &amp; nh\u1ecf g\u1ecdn<\/strong>: VCSEL ch\u1ec9 ti\u00eau th\u1ee5 v\u00e0i miliwatt tr\u00ean m\u1ed7i k\u00eanh v\u00e0 chi\u1ebfm r\u1ea5t \u00edt di\u1ec7n t\u00edch tr\u00ean b\u1ea3ng m\u1ea1ch in (PCB), gi\u00fap gi\u1ea3m nhi\u1ec7t v\u00e0 \u0111\u01a1n gi\u1ea3n h\u00f3a thi\u1ebft k\u1ebf t\u1ea3n nhi\u1ec7t.<\/p><\/li><li><p><strong>S\u1eb5n s\u00e0ng cho t\u1ed1c \u0111\u1ed9 cao<\/strong>: C\u00e1c VCSEL hi\u1ec7n \u0111\u1ea1i c\u00f3 v\u00f9ng c\u00e1ch ly b\u1eb1ng oxit h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u l\u00ean t\u1edbi <strong>25\u201350\u202fGbps tr\u00ean m\u1ed7i k\u00eanh<\/strong> b\u1eb1ng c\u00e1c k\u1ef9 thu\u1eadt \u0111i\u1ec1u ch\u1ebf ti\u00ean ti\u1ebfn (v\u00ed d\u1ee5: PAM\u20114).<\/p><\/li><li><p><strong>M\u1ea3ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/strong>: C\u00e1c m\u1ea3ng VCSEL 4 k\u00eanh c\u1ee7a LINK\u2011PP h\u1ed7 tr\u1ee3.<\/p><p\/><\/li>\n<\/ul>\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\/555bb8d70dfe41db88a8e392c09812cf.jpg\" alt=\"VCSEL in Optical Modules\" class=\"wp-image-4247\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/555bb8d70dfe41db88a8e392c09812cf.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/555bb8d70dfe41db88a8e392c09812cf-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/555bb8d70dfe41db88a8e392c09812cf-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/555bb8d70dfe41db88a8e392c09812cf-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/555bb8d70dfe41db88a8e392c09812cf-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >VCSEL trong b\u1ed9 thu ph\u00e1t quang LINK\u2011PP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ed1n module LINK\u2011PP ch\u00ednh \u0111\u01b0\u1ee3c trang b\u1ecb c\u00f4ng ngh\u1ec7 VCSEL:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/488477.htm\"><strong>LS\u2011MM8532\u2011S1C 32G SFP28<\/strong><\/a><br\/>T\u00edch h\u1ee3p b\u1ed9 ph\u00e1t VCSEL 850\u202fnm, \u0111i\u1ed1t quang PIN, b\u1ed9 khu\u1ebfch \u0111\u1ea1i TIA v\u00e0 MCU\u2014l\u00fd t\u01b0\u1edfng cho t\u1ed1c \u0111\u1ed9 \u0111\u00e1ng tin c\u1eady 32\u202fGbps v\u1edbi t\u1ea7m ho\u1ea1t \u0111\u1ed9ng 100\u202fm v\u00e0 h\u1ed7 tr\u1ee3 DDMI.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/481830.htm\"><strong>LS\u2011MM852G\u2011S5I SFP 2,5G<\/strong><\/a><br\/>S\u1eed d\u1ee5ng laser VCSEL \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u 2,5\u202fGbps tr\u00ean c\u00e1p quang \u0111a mode l\u00ean \u0111\u1ebfn 550\u202fm\u2014ph\u00f9 h\u1ee3p tuy\u1ec7t v\u1eddi cho c\u00e1c h\u1ec7 th\u1ed1ng c\u0169 v\u00e0 \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/478235.htm\"><strong>LS\u2011MM8525E\u2011S1C SFP28 25G<\/strong><\/a><br\/>C\u00f3 b\u1ed9 ph\u00e1t VCSEL 850\u202fnm t\u1ed1c \u0111\u1ed9 cao k\u1ebft h\u1ee3p b\u1ed9 thu PIN\u2014h\u1ed7 tr\u1ee3 li\u00ean k\u1ebft 25\u202fGbps \u0111\u00e1p \u1ee9ng nhu c\u1ea7u trung t\u00e2m d\u1eef li\u1ec7u m\u1edbi n\u1ed5i.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482754.htm\"><strong>LQ\u2011M8540\u2011SR4I QSFP+ 40G<\/strong><\/a><br\/>T\u00edch h\u1ee3p m\u1ea3ng VCSEL 850\u202fnm b\u1ed1n k\u00eanh \u0111\u1ec3 \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 4\u00d710\u202fGbps trong m\u00f4i tr\u01b0\u1eddng \u0111a mode m\u1eadt \u0111\u1ed9 cao.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf00 <\/strong>VCSEL so v\u1edbi laser DFB<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>Laser VCSEL.<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/dfb-laser-definition\/\"><strong>Laser DFB<\/strong><\/a><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>H\u01b0\u1edbng ph\u00e1t x\u1ea1<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u1ec1 m\u1eb7t (th\u1eb3ng \u0111\u1ee9ng)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u1ea1nh, bu\u1ed3ng c\u1ed9ng h\u01b0\u1edfng d\u00e0i h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh b\u01b0\u1edbc s\u00f3ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung b\u00ecnh, ph\u00f9 h\u1ee3p cho h\u1ec7 th\u1ed1ng c\u00e1p quang \u0111a mode<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Xu\u1ea5t s\u1eafc, \u0111\u1ed9 r\u1ed9ng ph\u1ed5 h\u1eb9p, l\u00fd t\u01b0\u1edfng cho DWDM v\u00e0 vi\u1ec5n th\u00f4ng \u0111\u01b0\u1eddng d\u00e0i<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ch\u1ebf \u0111\u1ed9 ph\u00e1t x\u1ea1<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00f3 th\u1ec3 l\u00e0 \u0111\u01a1n mode ho\u1eb7c \u0111a mode t\u00f9y theo thi\u1ebft k\u1ebf<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u01b0\u1eddng l\u00e0 \u0111\u01a1n mode th\u00f4ng qua m\u1ea1ng Bragg<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u01b0\u01a1ng th\u00edch c\u00e1p quang<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gh\u00e9p n\u1ed1i hi\u1ec7u qu\u1ea3 cao v\u1edbi c\u00e1p quang \u0111a mode<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 truy\u1ec1n d\u1eabn tr\u00ean c\u00e1p quang \u0111\u01a1n mode<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>D\u1ea3i th\u00f4ng \u0111i\u1ec1u ch\u1ebf<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ed7 tr\u1ee3 h\u00e0ng ch\u1ee5c GHz (10\u201350\u202fGbps)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u00f4ng th\u01b0\u1eddng h\u1ed7 tr\u1ee3 10\u201315\u202fGbps, c\u00f3 s\u1eb5n \u0111i\u1ec1u ch\u1ebf \u0111\u1ed3ng pha<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ki\u1ec3m tra &amp; chi ph\u00ed<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ki\u1ec3m tra \u1edf c\u1ea5p \u0111\u1ed9 wafer, t\u1ef7 l\u1ec7 th\u00e0nh ph\u1ea9m cao v\u00e0 hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chi ph\u00ed cao h\u01a1n do \u0111\u1ed9 ch\u00ednh x\u00e1c trong qu\u00e1 tr\u00ecnh ch\u1ebf t\u1ea1o v\u00e0 hi\u1ec7u su\u1ea5t d\u1ea3i b\u01b0\u1edbc s\u00f3ng h\u1eb9p<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft trung t\u00e2m d\u1eef li\u1ec7u c\u1ef1 ly ng\u1eafn (SFP+\/SFP28), c\u1ea3m bi\u1ebfn, LiDAR<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vi\u1ec5n th\u00f4ng DWDM c\u1ef1 ly xa, c\u1ea3m bi\u1ebfn, \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf00<\/strong>FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >VCSEL l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a \u0111i\u1ec1u g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">VCSEL l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Laser ph\u00e1t x\u1ea1 b\u1ec1 m\u1eb7t h\u1ed1c d\u1ecdc. Lo\u1ea1i laser n\u00e0y ph\u00e1t \u00e1nh s\u00e1ng theo h\u01b0\u1edbng vu\u00f4ng g\u00f3c v\u1edbi b\u1ec1 m\u1eb7t chip b\u00e1n d\u1eabn, ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1eeb m\u00e9p chip.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >VCSEL kh\u00e1c v\u1edbi laser truy\u1ec1n th\u1ed1ng nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">VCSEL ph\u00e1t \u00e1nh s\u00e1ng vu\u00f4ng g\u00f3c v\u1edbi b\u1ec1 m\u1eb7t chip. C\u00e1c laser truy\u1ec1n th\u1ed1ng, v\u00ed d\u1ee5 nh\u01b0 laser ph\u00e1t x\u1ea1 t\u1eeb m\u00e9p, ph\u00e1t \u00e1nh s\u00e1ng ra t\u1eeb c\u1ea1nh b\u00ean. VCSEL cho ph\u00e9p ki\u1ec3m tra d\u1ec5 d\u00e0ng h\u01a1n, t\u00edch h\u1ee3p t\u1ed1t h\u01a1n v\u00e0 th\u01b0\u1eddng ti\u00eau th\u1ee5 \u00edt n\u0103ng l\u01b0\u1ee3ng h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y VCSEL \u1edf \u0111\u00e2u trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng VCSEL trong \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh \u0111\u1ec3 nh\u1eadn di\u1ec7n khu\u00f4n m\u1eb7t, trong chu\u1ed9t m\u00e1y t\u00ednh v\u00e0 trong trung t\u00e2m d\u1eef li\u1ec7u nh\u1eb1m thi\u1ebft l\u1eadp c\u00e1c k\u1ebft n\u1ed1i internet t\u1ed1c \u0111\u1ed9 cao. Nhi\u1ec1u \u00f4 t\u00f4 s\u1eed d\u1ee5ng VCSEL trong h\u1ec7 th\u1ed1ng LiDAR nh\u1eb1m h\u1ed7 tr\u1ee3 c\u00e1c t\u00ednh n\u0103ng an to\u00e0n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >VCSEL c\u00f3 an to\u00e0n cho m\u1eaft ng\u01b0\u1eddi hay kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ea7u h\u1ebft VCSEL ho\u1ea1t \u0111\u1ed9ng \u1edf c\u00f4ng su\u1ea5t th\u1ea5p v\u00e0 s\u1eed d\u1ee5ng c\u00e1c b\u01b0\u1edbc s\u00f3ng l\u00e0m gi\u1ea3m nguy c\u01a1 g\u00e2y h\u1ea1i cho m\u1eaft. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft k\u1ebf thi\u1ebft b\u1ecb sao cho \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n an to\u00e0n nghi\u00eam ng\u1eb7t. Tuy nhi\u00ean, ng\u01b0\u1eddi d\u00f9ng v\u1eabn n\u00ean tr\u00e1nh nh\u00ecn tr\u1ef1c ti\u1ebfp v\u00e0o b\u1ea5t k\u1ef3 ngu\u1ed3n laser n\u00e0o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng \u01b0u \u0111i\u1ec3m ch\u00ednh c\u1ee7a VCSEL l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">VCSEL mang l\u1ea1i t\u1ed1c \u0111\u1ed9 cao, ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p v\u00e0 d\u1ec5 d\u00e0ng t\u00edch h\u1ee3p th\u00e0nh m\u1ea3ng. Ch\u00fang cung c\u1ea5p hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh v\u00e0 h\u1ed7 tr\u1ee3 nhi\u1ec1u \u1ee9ng d\u1ee5ng, t\u1eeb truy\u1ec1n th\u00f4ng d\u1eef li\u1ec7u \u0111\u1ebfn h\u00ecnh \u1ea3nh y t\u1ebf.<\/p>\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\/dfb-laser-definition\/\">Gi\u1edbi thi\u1ec7u t\u1ed5ng quan v\u1ec1 Laser ph\u1ea3n h\u1ed3i ph\u00e2n b\u1ed1<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/erbium-doped-fiber-amplifier-optical-networks\/\">Kh\u00e1m ph\u00e1 B\u1ed9 khu\u1ebfch \u0111\u1ea1i s\u1ee3i quang pha t\u1ea1p Erbium v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng quang h\u1ecdc c\u1ee7a ch\u00fang<\/a><\/p>\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 h\u1ee3p ph\u00e2n chia theo b\u01b0\u1edbc s\u00f3ng v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng quang h\u1ecdc c\u1ee7a n\u00f3<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>C\u00f4ng ngh\u1ec7 VCSEL cho ph\u00e9p truy\u1ec1n th\u00f4ng d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao, c\u1ea3m bi\u1ebfn 3D, LiDAR v\u00e0 h\u00ecnh \u1ea3nh y t\u1ebf nh\u1edd c\u00e1c gi\u1ea3i ph\u00e1p laze nh\u1ecf g\u1ecdn v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>","protected":false},"author":1,"featured_media":4248,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[26],"class_list":["post-4249","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\/4249","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=4249"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4249\/revisions"}],"predecessor-version":[{"id":11449,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4249\/revisions\/11449"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4248"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}