{"id":3911,"date":"2025-11-14T00:00:00","date_gmt":"2025-11-14T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/fiber-bragg-grating-precise-strain-temperature-sensing-monitoring\/"},"modified":"2026-06-22T05:05:29","modified_gmt":"2026-06-22T05:05:29","slug":"fiber-bragg-grating-precise-strain-temperature-sensing-monitoring","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/fiber-bragg-grating-precise-strain-temperature-sensing-monitoring","title":{"rendered":"B\u1ed9 l\u1ecdc Bragg s\u1ee3i quang (FBG) l\u00e0 g\u00ec? H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 c\u1ea3m bi\u1ebfn FBG"},"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\/458beee1ca3b47c481fd710e7107a57a.webp\" alt=\"Fiber Bragg Grating (FBG)\" class=\"wp-image-3909\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/458beee1ca3b47c481fd710e7107a57a.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/458beee1ca3b47c481fd710e7107a57a-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/458beee1ca3b47c481fd710e7107a57a-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/458beee1ca3b47c481fd710e7107a57a-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/458beee1ca3b47c481fd710e7107a57a-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n \u0111\u00e3 bao gi\u1edd t\u1ef1 h\u1ecfi l\u00e0m th\u1ebf n\u00e0o m\u1ed9t c\u00e1nh qu\u1ea1t tuabin gi\u00f3 kh\u1ed5ng l\u1ed3 c\u00f3 th\u1ec3 c\u1ea3m nh\u1eadn \u1ee9ng su\u1ea5t c\u1ea5u tr\u00fac, hay nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t \u1edf \u0111\u1ed9 s\u00e2u b\u00ean trong nh\u00e0 m\u00e1y \u0111i\u1ec7n nh\u01b0 th\u1ebf n\u00e0o ch\u01b0a? C\u00e2u tr\u1ea3 l\u1eddi th\u01b0\u1eddng n\u1eb1m \u1edf m\u1ed9t c\u00f4ng ngh\u1ec7 \u0111\u00e1ng kinh ng\u1ea1c \u0111\u01b0\u1ee3c \u1ea9n b\u00ean trong s\u1ee3i c\u00e1p quang m\u1ecfng nh\u01b0 s\u1ee3i t\u00f3c: <strong>M\u1ea1ng Bragg S\u1ee3i Quang (FBG)<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang ta s\u1ebd l\u00e0m r\u00f5 c\u00f4ng ngh\u1ec7 FBG. Ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 c\u00e1c nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a n\u00f3, c\u00e1ch th\u1ee9c s\u1ea3n xu\u1ea5t, c\u00e1c \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng, v\u00e0 l\u00fd do v\u00ec sao n\u00f3 l\u00e0 l\u1ef1a ch\u1ecdn \u01b0u vi\u1ec7t cho c\u00e1c h\u1ec7 th\u1ed1ng c\u1ea3m bi\u1ebfn v\u00e0 truy\u1ec1n th\u00f4ng hi\u1ec7n \u0111\u1ea1i. Ch\u00fang ta c\u0169ng s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vai tr\u00f2 c\u1ee7a n\u00f3 trong c\u00e1c c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn <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>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf10 C\u00e1c \u0111i\u1ec3m ch\u00ednh c\u1ea7n ghi nh\u1edb<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u1ea3m bi\u1ebfn m\u1ea1ng Bragg s\u1ee3i quang<\/strong> c\u00f3 th\u1ec3 \u0111o ch\u00ednh x\u00e1c c\u00e1c thay \u0111\u1ed5i v\u1ec1 bi\u1ebfn d\u1ea1ng v\u00e0 nhi\u1ec7t \u0111\u1ed9. Ch\u00fang gi\u00fap ki\u1ec3m tra \u0111\u1ed9 an to\u00e0n c\u1ee7a c\u1ea7u v\u00e0 m\u00e1y m\u00f3c.<\/p><\/li><li><p>Nh\u1eefng c\u1ea3m bi\u1ebfn n\u00e0y ch\u1ec9 ph\u1ea3n x\u1ea1 m\u1ed9t s\u1ed1 m\u00e0u \u00e1nh s\u00e1ng nh\u1ea5t \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p ch\u00fang ph\u00e1t hi\u1ec7n ngay c\u1ea3 nh\u1eefng thay \u0111\u1ed5i nh\u1ecf nh\u1ea5t xung quanh.<\/p><\/li><li><p>C\u1ea3m bi\u1ebfn m\u1ea1ng Bragg s\u1ee3i quang r\u1ea5t \u0111\u00e1ng tin c\u1eady v\u00e0 kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec5u \u0111i\u1ec7n. Ch\u00fang ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong nh\u1eefng m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t n\u01a1i c\u00e1c c\u1ea3m bi\u1ebfn kh\u00e1c c\u00f3 th\u1ec3 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng.<\/p><\/li><li><p>K\u1ef9 thu\u1eadt gh\u00e9p k\u00eanh cho ph\u00e9p nhi\u1ec1u c\u1ea3m bi\u1ebfn c\u00f9ng k\u1ebft n\u1ed1i tr\u00ean m\u1ed9t s\u1ee3i quang. \u0110i\u1ec1u n\u00e0y gi\u00fap vi\u1ec7c gi\u00e1m s\u00e1t c\u00e1c khu v\u1ef1c r\u1ed9ng l\u1edbn tr\u1edf n\u00ean d\u1ec5 d\u00e0ng v\u00e0 nhanh ch\u00f3ng h\u01a1n.<\/p><\/li><li><p>Vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn m\u1ea1ng Bragg s\u1ee3i quang gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh. Ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng ch\u00fang trong c\u00e1c nh\u00e0 m\u00e1y v\u00e0 \u0111\u1ec3 theo d\u00f5i m\u00f4i tr\u01b0\u1eddng.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf10 Nguy\u00ean l\u00fd c\u1ed1t l\u00f5i: M\u1ed9t \u201cg\u01b0\u01a1ng\u201d b\u00ean trong s\u1ee3i quang<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 b\u1ea3n ch\u1ea5t, m\u1ed9t <strong>M\u1ea1ng Bragg S\u1ee3i Quang<\/strong> l\u00e0 m\u1ed9t s\u1ef1 bi\u1ebfn thi\u00ean tu\u1ea7n ho\u00e0n vi m\u00f4 <strong>c\u1ee7a chi\u1ebft quang su\u1ea5t trong l\u00f5i s\u1ee3i quang.<\/strong> H\u00e3y h\u00ecnh dung n\u00f3 nh\u01b0 m\u1ed9t lo\u1ea1t g\u01b0\u01a1ng nh\u1ecf song song \u0111\u01b0\u1ee3c kh\u1eafc v\u00e0o th\u1ee7y tinh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi \u00e1nh s\u00e1ng ph\u1ed5 r\u1ed9ng \u0111\u01b0\u1ee3c truy\u1ec1n d\u1ecdc theo s\u1ee3i quang, m\u1ea1ng \u0111\u1eb7c bi\u1ec7t n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ed9 l\u1ecdc ch\u1ecdn l\u1ecdc. N\u00f3 ph\u1ea3n x\u1ea1 m\u1ed9t b\u01b0\u1edbc s\u00f3ng \u00e1nh s\u00e1ng r\u1ea5t c\u1ee5 th\u1ec3, g\u1ecdi l\u00e0 <strong>B\u01b0\u1edbc s\u00f3ng Bragg (\u03bb\u2086)<\/strong>, trong khi truy\u1ec1n t\u1ea5t c\u1ea3 c\u00e1c b\u01b0\u1edbc s\u00f3ng c\u00f2n l\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u01b0\u01a1ng tr\u00ecnh c\u01a1 b\u1ea3n chi ph\u1ed1i hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y l\u00e0:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">\u03bb\u2086 = 2n\u039b<\/mark><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong \u0111\u00f3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong><mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">\u03bb\u2086<\/mark><\/strong> l\u00e0 b\u01b0\u1edbc s\u00f3ng Bragg (b\u01b0\u1edbc s\u00f3ng \u0111\u01b0\u1ee3c ph\u1ea3n x\u1ea1).<\/p><\/li><li><p style=\"margin: 0px;\"><strong><mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">n<\/mark><\/strong> l\u00e0 chi\u1ebft quang su\u1ea5t hi\u1ec7u d\u1ee5ng c\u1ee7a l\u00f5i s\u1ee3i quang.<\/p><\/li><li><p style=\"margin: 0px;\"><strong><mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">\u039b<\/mark><\/strong> (Lambda) l\u00e0 chu k\u1ef3 c\u1ee7a m\u1ea1ng.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01a1n gi\u1ea3n n\u00e0y ch\u00ednh l\u00e0 ch\u00eca kh\u00f3a cho kh\u1ea3 n\u0103ng c\u1ea3m bi\u1ebfn c\u1ee7a FBG. B\u1ea5t k\u1ef3 y\u1ebfu t\u1ed1 b\u00ean ngo\u00e0i n\u00e0o nh\u01b0 <strong>bi\u1ebfn d\u1ea1ng (k\u00e9o gi\u00e3n ho\u1eb7c n\u00e9n), nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c \u00e1p su\u1ea5t<\/strong> l\u00e0m thay \u0111\u1ed5i m\u1ed9t trong hai \u0111\u1ea1i l\u01b0\u1ee3ng <strong>\u2018<mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">n<\/mark>\u2018<\/strong> or <strong>\u2018<mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">\u039b<\/mark>\u2018<\/strong> s\u1ebd g\u00e2y ra s\u1ef1 d\u1ecbch chuy\u1ec3n tr\u1ef1c ti\u1ebfp v\u00e0 c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c c\u1ee7a b\u01b0\u1edbc s\u00f3ng Bragg. B\u1eb1ng c\u00e1ch \u0111o ch\u00ednh x\u00e1c s\u1ef1 d\u1ecbch chuy\u1ec3n n\u00e0y, ch\u00fang ta c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c m\u1ee9c \u0111\u1ed9 thay \u0111\u1ed5i v\u1eadt l\u00fd t\u00e1c \u0111\u1ed9ng l\u00ean m\u1ea1ng. <\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"505\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b86bde3fb8b4944994cea4d98c34181.webp\" alt=\"Fiber Bragg Grating (FBG)\" class=\"wp-image-3910\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b86bde3fb8b4944994cea4d98c34181.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b86bde3fb8b4944994cea4d98c34181-300x126.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b86bde3fb8b4944994cea4d98c34181-1024x431.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b86bde3fb8b4944994cea4d98c34181-768x323.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6b86bde3fb8b4944994cea4d98c34181-18x8.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf10 C\u00e1ch s\u1ea3n xu\u1ea5t c\u1ea3m bi\u1ebfn FBG?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c t\u1ea1o ra nh\u1eefng \u201cg\u01b0\u01a1ng\u201d n\u1ed9i t\u1ea1i tinh vi n\u00e0y \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao. Ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 <strong>k\u1ef9 thu\u1eadt m\u1eb7t n\u1ea1 pha<\/strong>.<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>Thi\u1ebft l\u1eadp:<\/strong> M\u1ed9t m\u1eb7t n\u1ea1 pha \u0111\u1eb7c bi\u1ec7t (m\u1ed9t m\u1ea1ng quang kh\u1eafc) \u0111\u01b0\u1ee3c \u0111\u1eb7t ph\u00eda tr\u01b0\u1edbc m\u1ed9t s\u1ee3i quang nh\u1ea1y quang.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Qu\u00e1 tr\u00ecnh \u201cghi\u201d:<\/strong> M\u1ed9t ch\u00f9m tia laser c\u1ef1c t\u00edm (UV) m\u1ea1nh \u0111\u01b0\u1ee3c chi\u1ebfu xuy\u00ean qua m\u1eb7t n\u1ea1.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>S\u1ef1 thay \u0111\u1ed5i v\u0129nh vi\u1ec5n:<\/strong> \u00c1nh s\u00e1ng UV nhi\u1ec5u x\u1ea1 qua m\u1eb7t n\u1ea1, t\u1ea1o ra m\u1ed9t m\u1eabu tu\u1ea7n ho\u00e0n g\u1ed3m c\u00e1c v\u00f9ng s\u00e1ng m\u1ea1nh v\u00e0 y\u1ebfu tr\u00ean l\u00f5i s\u1ee3i quang. Vi\u1ec7c ph\u01a1i s\u00e1ng n\u00e0y l\u00e0m t\u0103ng v\u0129nh vi\u1ec5n chi\u1ebft quang su\u1ea5t \u1edf c\u00e1c v\u00f9ng s\u00e1ng, \u201cghi\u201d m\u1ea1ng v\u00e0o s\u1ee3i quang.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Quy tr\u00ecnh n\u00e0y cho ph\u00e9p t\u1ea1o ra c\u00e1c c\u1ea3m bi\u1ebfn FBG c\u00f3 \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady cao, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c cao, ch\u1eb3ng h\u1ea1n nh\u01b0 <strong>c\u00e1c gi\u1ea3i ph\u00e1p gi\u00e1m s\u00e1t s\u1ee9c kh\u1ecfe c\u1ea5u tr\u00fac<\/strong> and <strong>c\u00e1c h\u1ec7 th\u1ed1ng c\u1ea3m bi\u1ebfn ph\u00e2n b\u1ed1<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf10 C\u00e1c \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a c\u00f4ng ngh\u1ec7 FBG: V\u00ec sao n\u00ean ch\u1ecdn n\u00f3?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>FBG<\/strong> c\u00e1c c\u1ea3m bi\u1ebfn \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a vi\u1ec7c \u0111o l\u01b0\u1eddng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t v\u00e0 quan tr\u1ecdng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng so s\u00e1nh l\u00fd do v\u00ec sao ch\u00fang th\u01b0\u1eddng v\u01b0\u1ee3t tr\u1ed9i h\u01a1n c\u00e1c c\u1ea3m bi\u1ebfn \u0111i\u1ec7n t\u1eed truy\u1ec1n th\u1ed1ng:<\/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;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>C\u1ea3m bi\u1ebfn FBG<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>C\u1ea3m bi\u1ebfn \u0111i\u1ec7n t\u1eed truy\u1ec1n th\u1ed1ng<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m v\u1edbi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2705 Xu\u1ea5t s\u1eafc (d\u1ef1a tr\u00ean \u00e1nh s\u00e1ng)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u274c D\u1ec5 b\u1ecb nhi\u1ec5u<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>H\u1ec7 s\u1ed1 d\u1ea1ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nh\u1ecf g\u1ecdn, nh\u1eb9, linh ho\u1ea1t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u01b0\u1eddng c\u1ed3ng k\u1ec1nh h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Gh\u00e9p k\u00eanh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2705 Cao (Nhi\u1ec1u c\u1ea3m bi\u1ebfn tr\u00ean m\u1ed9t s\u1ee3i quang)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u274c C\u1ea7n d\u00e2y n\u1ed1i ph\u1ee9c t\u1ea1p cho t\u1eebng c\u1ea3m bi\u1ebfn<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2705 Xu\u1ea5t s\u1eafc (th\u1ee7y tinh)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u274c C\u00f3 th\u1ec3 b\u1ecb \u0103n m\u00f2n trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Truy\u1ec1n t\u00edn hi\u1ec7u kho\u1ea3ng c\u00e1ch xa<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2705 Ho\u1ea1t \u0111\u1ed9ng tr\u00ean h\u00e0ng kil\u00f4m\u00e9t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u274c Ph\u1ea1m vi t\u00edn hi\u1ec7u b\u1ecb gi\u1edbi h\u1ea1n<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y khi\u1ebfn c\u00f4ng ngh\u1ec7 FBG tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho <strong>gi\u00e1m s\u00e1t \u0111i\u1ec1u ki\u1ec7n th\u1eddi gian th\u1ef1c<\/strong> trong c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p c\u00f3 nhi\u1ec5u \u0111i\u1ec7n m\u1ea1nh v\u00e0 \u0111\u1ea3m b\u1ea3o <strong>an to\u00e0n h\u00e0ng kh\u00f4ng v\u00e0 v\u0169 tr\u1ee5<\/strong> th\u00f4ng qua c\u1ea3m bi\u1ebfn t\u00edch h\u1ee3p trong v\u1eadt li\u1ec7u composite.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf10 C\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a c\u1ea3m bi\u1ebfn FBG<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng l\u1ee3i \u00edch \u0111\u1ed9c \u0111\u00e1o c\u1ee7a FBG \u0111\u01b0\u1ee3c chuy\u1ec3n h\u00f3a th\u00e0nh c\u00e1c gi\u1ea3i ph\u00e1p m\u1ea1nh m\u1ebd trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>K\u1ef9 thu\u1eadt d\u00e2n d\u1ee5ng &amp; C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng:<\/strong> Gi\u00e1m s\u00e1t c\u1ea7u, h\u1ea7m, \u0111\u1eadp v\u00e0 c\u00e1c c\u00f4ng tr\u00ecnh l\u1ecbch s\u1eed nh\u1eb1m ph\u00e1t hi\u1ec7n \u1ee9ng su\u1ea5t, bi\u1ebfn d\u1ea1ng v\u00e0 bi\u1ebfn d\u1ea1ng.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>N\u0103ng l\u01b0\u1ee3ng:<\/strong> <strong>Gi\u00e1m s\u00e1t nhi\u1ec7t \u0111\u1ed9 trong m\u00e1y bi\u1ebfn \u00e1p \u0111i\u1ec7n l\u1ef1c<\/strong> v\u00e0 c\u1ea3m bi\u1ebfn t\u1ea3i cho c\u00e1nh qu\u1ea1t tuabin gi\u00f3.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>H\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5:<\/strong> T\u00edch h\u1ee3p c\u1ea3m bi\u1ebfn v\u00e0o c\u00e1nh v\u00e0 th\u00e2n m\u00e1y bay \u0111\u1ec3 gi\u00e1m s\u00e1t \u0111\u1ed9 b\u1ec1n c\u1ea5u tr\u00fac.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Y t\u1ebf:<\/strong> Ph\u00e1t tri\u1ec3n kim ti\u00eam v\u00e0 \u1ed1ng th\u00f4ng c\u1ea3m bi\u1ebfn h\u00ecnh d\u1ea1ng ti\u00ean ti\u1ebfn cho ph\u1eabu thu\u1eadt \u00edt x\u00e2m l\u1ea5n.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>D\u1ea7u kh\u00ed:<\/strong> C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf10 K\u1ebft n\u1ed1i FBG: \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh b\u01b0\u1edbc s\u00f3ng trong b\u1ed9 thu ph\u00e1t quang<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 h\u1ecfi, FBG li\u00ean quan g\u00ec \u0111\u1ebfn truy\u1ec1n d\u1eef li\u1ec7u? C\u00e2u tr\u1ea3 l\u1eddi n\u1eb1m \u1edf m\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t c\u1ee7a n\u00f3: \u1ed5n \u0111\u1ecbnh \u0111i-\u1ed1t laser trong <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>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c laser trong b\u1ed9 thu ph\u00e1t c\u00f3 th\u1ec3 l\u1ec7ch b\u01b0\u1edbc s\u00f3ng do nhi\u1ec7t \u0111\u1ed9 v\u00e0 tu\u1ed5i th\u1ecd, g\u00e2y suy gi\u1ea3m t\u00edn hi\u1ec7u. M\u1ed9t FBG t\u00edch h\u1ee3p ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t <strong>g\u01b0\u01a1ng bu\u1ed3ng c\u1ed9ng h\u01b0\u1edfng ngo\u00e0i<\/strong>, c\u1ef1c k\u1ef3 \u1ed5n \u0111\u1ecbnh, c\u1ed1 \u0111\u1ecbnh b\u01b0\u1edbc s\u00f3ng \u0111\u1ea7u ra c\u1ee7a laser t\u1ea1i m\u1ed9t gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 v\u00e0 ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi ch\u00ednh m\u1ea1ng n\u00e0y. \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu cho <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-dwdm-explaining-dense-wavelength-division-multiplexing\/\"><strong>\u0110a b\u01b0\u1edbc s\u00f3ng m\u1eadt \u0111\u1ed9 cao (DWDM)<\/strong><\/a> c\u00e1c h\u1ec7 th\u1ed1ng, n\u01a1i h\u00e0ng ch\u1ee5c k\u00eanh ph\u1ea3i lu\u00f4n \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh ho\u00e0n h\u1ea3o \u0111\u1ec3 tr\u00e1nh <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/crosstalk-definition-causes-types-effects\/\"><strong>nhi\u1ec5u xuy\u00ean k\u00eanh<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 m\u1ea1ng \u0111ang t\u00ecm ki\u1ebfm c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t cao, vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1c b\u1ed9 thu ph\u00e1t c\u00f3 ngu\u1ed3n laser \u1ed5n \u0111\u1ecbnh l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c. V\u00ed d\u1ee5, b\u1ed9 thu ph\u00e1t hi\u1ec7u su\u1ea5t cao <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\"><strong>LI\u00caN K\u1ebeT-PP 100G QSFP28<\/strong> <strong>b\u1ed9 thu ph\u00e1t<\/strong><\/a> t\u1eadn d\u1ee5ng c\u00f4ng ngh\u1ec7 laser ti\u00ean ti\u1ebfn \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u01b0\u1ee3t tr\u1ed9i v\u00e0 ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p cho c\u00e1c \u1ee9ng d\u1ee5ng trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 vi\u1ec5n th\u00f4ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe. Khi \u0111\u00e1nh gi\u00e1 y\u00eau c\u1ea7u v\u1ec1 <strong>b\u1ed9 thu ph\u00e1t quang t\u1ed1c \u0111\u1ed9 cao c\u1ee7a b\u1ea1n<\/strong>, vi\u1ec7c xem x\u00e9t c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh b\u01b0\u1edbc s\u00f3ng l\u00e0 m\u1ed9t b\u01b0\u1edbc quan tr\u1ecdng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf10 K\u1ebft lu\u1eadn: T\u01b0\u01a1ng lai \u0111\u01b0\u1ee3c vi\u1ebft b\u1eb1ng \u00e1nh s\u00e1ng<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ea1ng Bragg S\u1ee3i Quang<\/strong> l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 linh ho\u1ea1t v\u00e0 m\u1ea1nh m\u1ebd, bi\u1ebfn s\u1ee3i quang \u0111\u01a1n gi\u1ea3n th\u00e0nh m\u1ed9t c\u00f4ng c\u1ee5 \u0111o l\u01b0\u1eddng v\u00e0 truy\u1ec1n th\u00f4ng ch\u00ednh x\u00e1c. Kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m v\u1edbi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI), kh\u1ea3 n\u0103ng gh\u00e9p k\u00eanh v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc c\u1ee7a n\u00f3 khi\u1ebfn c\u00f4ng ngh\u1ec7 n\u00e0y tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p \u01b0u ti\u00ean cho c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng th\u00f4ng minh, gi\u00e1m s\u00e1t c\u00f4ng nghi\u1ec7p n\u00e2ng cao v\u00e0 c\u00e1c li\u00ean k\u1ebft d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi nhu c\u1ea7u v\u1ec1 d\u1eef li\u1ec7u v\u00e0 gi\u00e1m s\u00e1t th\u00f4ng minh ng\u00e0y c\u00e0ng t\u0103ng, vai tr\u00f2 c\u1ee7a FBG s\u1ebd ng\u00e0y c\u00e0ng n\u1ed5i b\u1eadt h\u01a1n, m\u1edf \u0111\u01b0\u1eddng cho c\u00e1c c\u1ea5u tr\u00fac an to\u00e0n h\u01a1n, c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p hi\u1ec7u qu\u1ea3 h\u01a1n v\u00e0 c\u00e1c m\u1ea1ng nhanh h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf10 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a c\u1ea3m bi\u1ebfn grating Bragg tr\u00ean s\u1ee3i quang l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn grating Bragg tr\u00ean s\u1ee3i quang \u0111\u1ec3 \u0111o bi\u1ebfn d\u1ea1ng v\u00e0 nhi\u1ec7t \u0111\u1ed9. C\u1ea3m bi\u1ebfn gi\u00fap b\u1ea1n ph\u00e1t hi\u1ec7n nh\u1eefng thay \u0111\u1ed5i trong c\u00e1c c\u1ea5u tr\u00fac ho\u1eb7c m\u00e1y m\u00f3c. N\u00f3 cung c\u1ea5p cho b\u1ea1n d\u1eef li\u1ec7u r\u00f5 r\u00e0ng b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u00e1nh s\u00e1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110i\u1ec1u g\u00ec l\u00e0m cho c\u1ea3m bi\u1ebfn grating Bragg tr\u00ean s\u1ee3i quang kh\u00e1c bi\u1ec7t so v\u1edbi c\u00e1c c\u1ea3m bi\u1ebfn th\u00f4ng th\u01b0\u1eddng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3m bi\u1ebfn grating Bragg tr\u00ean s\u1ee3i quang s\u1eed d\u1ee5ng \u00e1nh s\u00e1ng thay v\u00ec \u0111i\u1ec7n. B\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c. C\u00e1c c\u1ea3m bi\u1ebfn n\u00e0y kh\u00f4ng ph\u1ea3n \u1ee9ng v\u1edbi nhi\u1ec5u \u0111i\u1ec7n. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ch\u00fang \u1edf nh\u1eefng n\u01a1i m\u00e0 c\u00e1c c\u1ea3m bi\u1ebfn th\u00f4ng th\u01b0\u1eddng c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn grating Bragg tr\u00ean s\u1ee3i quang trong nh\u1eefng m\u00f4i tr\u01b0\u1eddng n\u00e0o?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u1ea3m bi\u1ebfn grating Bragg tr\u00ean s\u1ee3i quang trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt, n\u00f3ng ho\u1eb7c b\u1ea9n. C\u00e1c c\u1ea3m bi\u1ebfn n\u00e0y ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t. B\u1ea1n c\u00f3 th\u1ec3 tin t\u01b0\u1edfng ch\u00fang cho vi\u1ec7c gi\u00e1m s\u00e1t ngo\u00e0i tr\u1eddi, c\u00f4ng nghi\u1ec7p ho\u1eb7c d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u01b0\u1edbc s\u00f3ng Bragg cho b\u1ea1n bi\u1ebft \u0111i\u1ec1u g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u01b0\u1edbc s\u00f3ng Bragg cho b\u1ea1n bi\u1ebft s\u1ee3i quang c\u00f3 b\u1ecb k\u00e9o gi\u00e3n hay b\u1ecb \u0111\u1ed1t n\u00f3ng hay kh\u00f4ng. B\u1ea1n theo d\u00f5i b\u01b0\u1edbc s\u00f3ng n\u00e0y \u0111\u1ec3 bi\u1ebft \u0111i\u1ec1u g\u00ec \u0111ang x\u1ea3y ra. M\u1ed9t s\u1ef1 thay \u0111\u1ed5i c\u00f3 ngh\u0129a l\u00e0 c\u00f3 bi\u1ebfn d\u1ea1ng ho\u1eb7c thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a c\u1ea3m bi\u1ebfn grating Bragg tr\u00ean s\u1ee3i quang l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n t\u00ecm th\u1ea5y c\u1ea3m bi\u1ebfn grating Bragg tr\u00ean s\u1ee3i quang trong c\u00e1c c\u00e2y c\u1ea7u, h\u1ea7m, nh\u00e0 m\u00e1y v\u00e0 \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn. C\u00e1c c\u1ea3m bi\u1ebfn n\u00e0y gi\u00fap b\u1ea1n gi\u00e1m s\u00e1t \u0111\u1ed9 an to\u00e0n, ph\u00e1t hi\u1ec7n h\u01b0 h\u1ecfng v\u00e0 ki\u1ec3m tra r\u00f2 r\u1ec9. B\u1ea1n s\u1eed d\u1ee5ng ch\u00fang \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ecdi th\u1ee9 v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh.<\/p>","protected":false},"excerpt":{"rendered":"<p>B\u1ed9 l\u1ecdc Bragg s\u1ee3i quang (FBG) cho ph\u00e9p \u0111o ch\u00ednh x\u00e1c bi\u1ebfn d\u1ea1ng v\u00e0 nhi\u1ec7t \u0111\u1ed9, cung c\u1ea5p kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t \u0111\u00e1ng tin c\u1eady cho c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng, m\u00e1y m\u00f3c v\u00e0 m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p>","protected":false},"author":1,"featured_media":3909,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[13,17,24,26],"class_list":["post-3911","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-100g-modules","tag-400g-optical-modules","tag-link-pp","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3911","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=3911"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3911\/revisions"}],"predecessor-version":[{"id":10882,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3911\/revisions\/10882"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/3909"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=3911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=3911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=3911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}