{"id":18935,"date":"2025-04-07T03:36:24","date_gmt":"2025-04-07T03:36:24","guid":{"rendered":"https:\/\/dekam-fiber.com\/?p=18935"},"modified":"2025-04-07T09:23:30","modified_gmt":"2025-04-07T09:23:30","slug":"how-does-optical-fiber-work","status":"publish","type":"post","link":"https:\/\/dekam-fiber.com\/vi\/how-does-optical-fiber-work\/","title":{"rendered":"S\u1ee3i quang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7"},"content":{"rendered":"<p>C\u00f4ng ngh\u1ec7 c\u00e1p quang l\u00e0 m\u1ed9t trong nh\u1eefng ti\u1ebfn b\u1ed9 quan tr\u1ecdng nh\u1ea5t trong l\u0129nh v\u1ef1c vi\u1ec5n th\u00f4ng, gi\u00fap vi\u1ec7c k\u1ebft n\u1ed1i v\u00e0 giao ti\u1ebfp trong th\u1ebf gi\u1edbi ng\u00e0y nay tr\u1edf n\u00ean d\u1ec5 d\u00e0ng, nhanh ch\u00f3ng v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n bao gi\u1edd h\u1ebft. Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1p th\u00f4ng th\u01b0\u1eddng, c\u00e1p quang s\u1eed d\u1ee5ng \u00e1nh s\u00e1ng l\u00e0m m\u00f4i tr\u01b0\u1eddng truy\u1ec1n d\u1eef li\u1ec7u, cho ph\u00e9p k\u1ebft n\u1ed1i hi\u1ec7u qu\u1ea3 h\u01a1n nhi\u1ec1u, ngay c\u1ea3 t\u1eeb kho\u1ea3ng c\u00e1ch xa.&nbsp;<\/p>\n\n\n\n<p>V\u00ec v\u1eady, bi\u1ebft c\u00e1ch <a href=\"https:\/\/dekam-fiber.com\/vi\/what-is-fiber-optic-cable\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1p quang<\/a> Ch\u1ee9c n\u0103ng n\u00e0y r\u1ea5t quan tr\u1ecdng d\u00f9 b\u1ea1n \u0111ang x\u00e2y d\u1ef1ng m\u1ea1ng gia \u0111\u00ecnh hay c\u1ea3i thi\u1ec7n ki\u1ebfn tr\u00fac CNTT c\u1ee7a m\u1ed9t c\u00f4ng ty. V\u00ec v\u1eady, trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang t\u00f4i s\u1ebd th\u1ea3o lu\u1eadn chi ti\u1ebft v\u1ec1 quy tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng ngh\u1ec7 c\u00e1p quang v\u00e0 nhi\u1ec1u n\u1ed9i dung kh\u00e1c. H\u00e3y c\u00f9ng ch\u00fang t\u00f4i t\u00ecm hi\u1ec3u nh\u00e9!<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXf06l9gdk2f8eUIs3xTA79uY2gJokh09CnWocanNMZASM8Zn40pHnDtOzwPXwaimk7Z8o1PBataYUq7wjG7owXCAMUbS5RB2bqlhBd3n23sMuQ1iUx9R6a6V7_w7TNfl-487Y5pPw?key=i-y5Nu84igTarKiERWzDwtVc\" alt=\"H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng s\u1ee3i quang\"\/><\/figure>\n\n\n\n<p>H\u00ecnh s\u1ed1 1 H\u01b0\u1edbng d\u1eabn l\u00e0m vi\u1ec7c s\u1ee3i quang<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1) Nguy\u00ean l\u00fd truy\u1ec1n \u00e1nh s\u00e1ng trong s\u1ee3i quang<\/strong><\/h2>\n\n\n\n<p>\u0110\u1ec3 hi\u1ec3u l\u00e0m th\u1ebf n\u00e0o m\u1ed9t <a href=\"https:\/\/en.wikipedia.org\/wiki\/Optical_fiber\" target=\"_blank\" rel=\"noreferrer noopener\">s\u1ee3i quang<\/a> th\u1ef1c hi\u1ec7n, tr\u01b0\u1edbc ti\u00ean ch\u00fang ta c\u1ea7n xem x\u00e9t nguy\u00ean l\u00fd ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n b\u00ean trong. \u0110\u00e2y l\u00e0 nguy\u00ean l\u00fd gi\u1eef cho t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng l\u01a1 l\u1eedng trong s\u1ee3i quang m\u00e0 kh\u00f4ng b\u1ecb suy gi\u1ea3m t\u00edn hi\u1ec7u. Gi\u1ea3 s\u1eed b\u1ea1n \u0111ang chi\u1ebfu \u0111\u00e8n pin v\u00e0o m\u1ed9t trong c\u00e1c \u0111\u1ea7u c\u1ee7a m\u1ed9t \u1ed1ng th\u1ee7y tinh r\u1ea5t d\u00e0i v\u00e0 t\u01b0\u1edfng t\u01b0\u1ee3ng n\u1ebfu \u00e1nh s\u00e1ng \u0111\u00f3 chi\u1ebfu v\u00e0o th\u00e0nh \u1ed1ng \u1edf m\u1ed9t g\u00f3c th\u00edch h\u1ee3p; th\u00ec ch\u1eafc ch\u1eafn n\u00f3 s\u1ebd n\u1ea3y v\u00e0 truy\u1ec1n v\u1ec1 ph\u00eda tr\u01b0\u1edbc. V\u00ec v\u1eady, d\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c g\u1eedi qua s\u1ee3i quang v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1ef1c nhanh tr\u00ean kho\u1ea3ng c\u00e1ch xa.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Chi\u1ebft su\u1ea5t v\u00e0 vai tr\u00f2 c\u1ee7a n\u00f3&nbsp;&nbsp;<\/strong><\/li>\n<\/ul>\n\n\n\n<p>L\u00fd do \u00e1nh s\u00e1ng quang h\u1ecdc v\u1eabn \u0111\u01b0\u1ee3c gi\u1eef trong s\u1ee3i l\u00e0 do chi\u1ebft su\u1ea5t. \u0110\u00e2y l\u00e0 \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt li\u1ec7u \u0111\u1ecbnh l\u01b0\u1ee3ng kh\u1ea3 n\u0103ng b\u1ebb cong c\u00e1c tia s\u00e1ng chi\u1ebfu v\u00e0o n\u00f3. H\u01a1n n\u1eefa, s\u1ee3i quang \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb hai l\u1edbp \u0111\u1ed3ng t\u00e2m c\u01a1 b\u1ea3n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u00f5i, l\u00e0 ph\u1ea7n trong su\u1ed1t \u1edf gi\u1eefa, gi\u1eef t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u1edbp v\u1ecf c\u00f3 chi\u1ebft su\u1ea5t th\u1ea5p h\u01a1n v\u00e0 bao quanh l\u00f5i.&nbsp;&nbsp;<\/li>\n<\/ul>\n\n\n\n<p>V\u00ec chi\u1ebft su\u1ea5t c\u1ee7a l\u00f5i cao h\u01a1n, \u00e1nh s\u00e1ng s\u1ebd b\u1ecb b\u1ebb cong tr\u1edf l\u1ea1i l\u00f5i thay v\u00ec tho\u00e1t ra ngo\u00e0i l\u1edbp v\u1ecf. S\u1ef1 ch\u00eanh l\u1ec7ch chi\u1ebft su\u1ea5t n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 c\u1ea7n thi\u1ebft \u0111\u1ec3 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 b\u00ean trong x\u1ea3y ra.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXddWS45zboSUwR2fOj_RhDfScjwTobK4B-YHOgkXQRhBVB74cRLe_ZgXwvaMMNzQAgw-LiT16vHF8vDC7a2ZYOGhO5FEPj8UmhlRbcZ-0wsVpaxSGz3hI93lTP0DWDU1auouAtz1w?key=i-y5Nu84igTarKiERWzDwtVc\" alt=\"Qu\u00e1 tr\u00ecnh truy\u1ec1n \u00e1nh s\u00e1ng trong s\u1ee3i quang\"\/><\/figure>\n\n\n\n<p>H\u00ecnh s\u1ed1 2 Qu\u00e1 tr\u00ecnh truy\u1ec1n \u00e1nh s\u00e1ng trong s\u1ee3i quang<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110\u1ecbnh lu\u1eadt Snell v\u00e0 g\u00f3c t\u1edbi<\/strong><\/li>\n<\/ul>\n\n\n\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Snell%27s_law\" target=\"_blank\" rel=\"noreferrer noopener\">Lu\u1eadt c\u1ee7a Snell<\/a> l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u1ecbnh lu\u1eadt v\u1eadt l\u00fd li\u00ean quan \u0111\u1ebfn c\u00e1ch \u00e1nh s\u00e1ng kh\u00fac x\u1ea1 khi n\u00f3 di chuy\u1ec3n t\u1eeb v\u1eadt li\u1ec7u n\u00e0y sang v\u1eadt li\u1ec7u kh\u00e1c c\u00f3 chi\u1ebft su\u1ea5t kh\u00e1c nhau. G\u00f3c t\u1edbi l\u00e0 ph\u00e9p \u0111o c\u00e1ch \u00e1nh s\u00e1ng ti\u1ebfp c\u1eadn m\u1ed9t b\u1ec1 m\u1eb7t nh\u1ea5t \u0111\u1ecbnh, li\u1ec7u n\u00f3 s\u1ebd \u0111i qua hay ph\u1ea3n x\u1ea1. N\u1ebfu g\u00f3c \u0111\u01b0\u1ee3c coi l\u00e0 d\u1ed1c, th\u00ec \u00e1nh s\u00e1ng s\u1ebd tho\u00e1t ra. Tuy nhi\u00ean, n\u1ebfu n\u00f3 n\u1eb1m trong m\u1ed9t ph\u1ea1m vi nh\u1ea5t \u0111\u1ecbnh, n\u00f3 s\u1ebd b\u1eadt ra m\u00e0 kh\u00f4ng m\u1ea5t t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<p>T\u00f3m l\u1ea1i, nh\u1eefng nguy\u00ean t\u1eafc n\u00e0y ch\u1ee9ng minh l\u00fd do \u0111\u1eb1ng sau hi\u1ec7u qu\u1ea3 c\u1ee7a s\u1ee3i quang v\u00e0 s\u1ef1 ph\u1ed5 bi\u1ebfn c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng ch\u00fang trong c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2) C\u00e1p quang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/h2>\n\n\n\n<p>M\u1ed8T <a href=\"https:\/\/dekam-fiber.com\/vi\/adss-fiber-optic-cable\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1p quang<\/a> truy\u1ec1n t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng qua nhi\u1ec1u s\u1ee3i nh\u1ef1a ho\u1eb7c th\u1ee7y tinh m\u1ecfng. \u0110i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 kh\u00e1c v\u1edbi d\u00e2y \u0111\u1ed3ng, s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u \u0111i\u1ec7n. V\u00ec v\u1eady, ch\u00fang ta h\u00e3y xem c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u01a1 b\u1ea3n c\u1ee7a lo\u1ea1i c\u00e1p s\u1ee3i nh\u1ecf n\u00e0y!<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXeSfht74UQ1v1jaB4O9J_STpbQv4mNOrFRBQWWDeoKtOhkmbn7_7pbjBARpASn_dJ0pbzRQWcGJ4axQScYPfjApApJ1eeJpI4ssYaTNNVaOBreXjmaCXWxPrY2Uh5IIp1oOci6XTw?key=i-y5Nu84igTarKiERWzDwtVc\" alt=\"Bi\u1ec3u \u0111\u1ed3 lu\u1ed3ng c\u00f4ng vi\u1ec7c s\u1ee3i quang\"\/><\/figure>\n\n\n\n<p>H\u00ecnh s\u1ed1 3 S\u01a1 \u0111\u1ed3 quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a s\u1ee3i quang<\/p>\n\n\n\n<p><strong>i) T\u1ea1o t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng<\/strong><\/p>\n\n\n\n<p>Tr\u01b0\u1edbc h\u1ebft, t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng m\u1ed9t b\u1ed9 ph\u00e1t, c\u00f3 th\u1ec3 l\u00e0 \u0111\u00e8n LED ho\u1eb7c tia laser. Th\u00e0nh ph\u1ea7n n\u00e0y chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u \u0111i\u1ec7n t\u1eed nh\u01b0 t\u00edn hi\u1ec7u \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c internet th\u00e0nh xung \u00e1nh s\u00e1ng. \u0110\u00e8n LED ho\u1eb7c tia laser t\u1ea1o ra lu\u1ed3ng d\u1eef li\u1ec7u nh\u1ecb ph\u00e2n b\u1eb1ng c\u00e1ch nh\u1ea5p nh\u00e1y li\u00ean t\u1ee5c.<\/p>\n\n\n\n<p><strong>ii) \u00c1nh s\u00e1ng \u0111i v\u00e0o l\u00f5i s\u1ee3i<\/strong><\/p>\n\n\n\n<p>\u00c1nh s\u00e1ng \u0111\u01b0\u1ee3c h\u01b0\u1edbng \u0111\u1ebfn l\u00f5i c\u1ee7a c\u00e1p quang. L\u00f5i c\u00f3 th\u1ee7y tinh ho\u1eb7c nh\u1ef1a cao c\u1ea5p v\u00e0 \u0111\u01b0\u1ee3c che ch\u1eafn b\u1eb1ng l\u1edbp th\u1ee7y tinh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 l\u1edbp ph\u1ee7.<\/p>\n\n\n\n<p><strong>iii) Gi\u1eef \u00e1nh s\u00e1ng b\u00ean trong b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n b\u00ean trong<\/strong><\/p>\n\n\n\n<p>B\u00e2y gi\u1edd, h\u00e3y nh\u1edb r\u1eb1ng \u00e1nh s\u00e1ng kh\u00f4ng ch\u1ec9 ch\u1ea3y qua; n\u00f3 ph\u1ea3n x\u1ea1 l\u1ea1i c\u00e1c b\u1ee9c t\u01b0\u1eddng b\u00ean trong c\u1ee7a l\u00f5i do ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n b\u00ean trong. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra v\u00ec:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u00f5i c\u00f3 chi\u1ebft su\u1ea5t cao h\u01a1n l\u1edbp v\u1ecf, do \u0111\u00f3 \u00e1nh s\u00e1ng kh\u00f4ng th\u1ec3 tho\u00e1t ra ngo\u00e0i.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u00c1nh s\u00e1ng khi chi\u1ebfu v\u00e0o ranh gi\u1edbi l\u00f5i-v\u1ecf b\u1ecdc \u1edf m\u1ed9t g\u00f3c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh s\u1ebd ph\u1ea3n x\u1ea1 v\u00e0o b\u00ean trong thay v\u00ec \u0111i qua.&nbsp;<\/li>\n<\/ul>\n\n\n\n<p>Do \u0111\u00f3, nh\u1edd s\u1ef1 ph\u1ea3n x\u1ea1 n\u00e0y, \u00e1nh s\u00e1ng c\u00f3 th\u1ec3 truy\u1ec1n \u0111i nh\u1eefng kho\u1ea3ng c\u00e1ch l\u1edbn v\u1edbi m\u1ee9c t\u1ed5n th\u1ea5t t\u1ed1i thi\u1ec3u.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXezBdF5Y1evfiYLajnlQpQuaBzrkfxYQnqR9R9vGin_ykyOruFpnEsBvMN16RxcxaTkSUzbUXi1G2bu4Y3YJla9Oje7ITcyFv221R3t9EwuC82RnsJfo8Nm0iGVHGRt9yL7K08D?key=i-y5Nu84igTarKiERWzDwtVc\" alt=\"Quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a s\u1ee3i quang\"\/><\/figure>\n\n\n\n<p>H\u00ecnh s\u1ed1 4 Quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a s\u1ee3i quang<\/p>\n\n\n\n<p><strong>iv) Duy tr\u00ec c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u<\/strong><\/p>\n\n\n\n<p>B\u1ea5t k\u1ec3 hi\u1ec7u qu\u1ea3 truy\u1ec1n t\u1ea3i \u00e1nh s\u00e1ng nh\u01b0 th\u1ebf n\u00e0o, m\u1ed9t s\u1ed1 n\u0103ng l\u01b0\u1ee3ng b\u1ecb m\u1ea5t \u1edf kho\u1ea3ng c\u00e1ch xa. Do \u0111\u00f3, \u0111\u1ec3 duy tr\u00ec t\u00edn hi\u1ec7u, b\u1ed9 khu\u1ebfch \u0111\u1ea1i quang \u0111\u01b0\u1ee3c l\u1eafp d\u1ecdc theo tuy\u1ebfn c\u00e1p. C\u00e1c thi\u1ebft b\u1ecb n\u00e0y khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng v\u00e0 kh\u00f4ng ph\u1ea3i chuy\u1ec3n \u0111\u1ed5i n\u00f3 tr\u1edf l\u1ea1i th\u00e0nh \u0111i\u1ec7n.&nbsp;<\/p>\n\n\n\n<p><strong>v) Nh\u1eadn v\u00e0 chuy\u1ec3n \u0111\u1ed5i \u00e1nh s\u00e1ng tr\u1edf l\u1ea1i th\u00e0nh d\u1eef li\u1ec7u<\/strong><\/p>\n\n\n\n<p>Cu\u1ed1i c\u00f9ng, m\u1ed9t m\u00e1y d\u00f2 \u1ea3nh (m\u00e1y thu) t\u1ea1i \u0111i\u1ec3m cu\u1ed1i thu th\u1eadp c\u00e1c xung \u00e1nh s\u00e1ng \u0111i v\u00e0o v\u00e0 bi\u1ebfn ch\u00fang tr\u1edf l\u1ea1i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n. Sau \u0111\u00f3, ch\u00fang \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1edfi m\u00e1y t\u00ednh, \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn internet \u0111\u1ec3 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c cung c\u1ea5p d\u01b0\u1edbi d\u1ea1ng c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c.&nbsp;<\/p>\n\n\n\n<p>Nh\u01b0 v\u1eady, t\u1ea5t c\u1ea3 c\u00e1c qu\u00e1 tr\u00ecnh tr\u00ean \u0111\u1ec1u \u0111\u01b0\u1ee3c ho\u00e0n th\u00e0nh v\u1edbi t\u1ed1c \u0111\u1ed9 \u0111\u00e1ng kinh ng\u1ea1c, cho ph\u00e9p truy c\u1eadp Internet nhanh, g\u1ecdi \u0111i\u1ec7n tho\u1ea1i r\u00f5 r\u00e0ng v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u th\u1eddi gian th\u1ef1c qua kho\u1ea3ng c\u00e1ch xa.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3) C\u00e1p quang c\u00f3 nguy hi\u1ec3m kh\u00f4ng?<\/strong><\/h2>\n\n\n\n<p>Ch\u1eafc ch\u1eafn l\u00e0 c\u00f3, c\u00e1p quang an to\u00e0n, nh\u01b0ng x\u1eed l\u00fd sai c\u00f3 th\u1ec3 g\u00e2y nguy hi\u1ec3m. V\u00ed d\u1ee5, kh\u00f4ng gi\u1ed1ng nh\u01b0 d\u00e2y \u0111\u1ed3ng, ch\u00fang kh\u00f4ng d\u1eabn \u0111i\u1ec7n, do \u0111\u00f3 kh\u00f4ng c\u00f3 nguy c\u01a1 b\u1ecb \u0111i\u1ec7n gi\u1eadt, h\u1ecfa ho\u1ea1n ho\u1eb7c \u0111o\u1ea3n m\u1ea1ch. Tuy nhi\u00ean, c\u00f3 m\u1ed9t s\u1ed1 nguy hi\u1ec3m c\u1ea7n ph\u1ea3i c\u1ea9n th\u1eadn.<\/p>\n\n\n\n<p><strong>!<\/strong><strong> Ti\u1ebfp x\u00fac v\u1edbi \u00e1nh s\u00e1ng laser:<\/strong> Truy\u1ec1n d\u1eef li\u1ec7u tr\u00ean s\u1ee3i quang \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng tia laser c\u01b0\u1eddng \u0111\u1ed9 cao. \u00c1nh s\u00e1ng nh\u01b0 v\u1eady th\u01b0\u1eddng l\u00e0 tia h\u1ed3ng ngo\u1ea1i, khi\u1ebfn ng\u01b0\u1eddi kh\u00e1c kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y, nh\u01b0ng nh\u00ecn tr\u1ef1c ti\u1ebfp v\u00e0o c\u00e1p quang \u0111ang ho\u1ea1t \u0111\u1ed9ng c\u00f3 th\u1ec3 l\u00e0m b\u1ecfng v\u00f5ng m\u1ea1c c\u1ee7a b\u1ea1n. V\u00ec t\u1ed5n th\u01b0\u01a1ng m\u1eaft kh\u00f4ng g\u00e2y \u0111au v\u00e0 v\u0129nh vi\u1ec5n, h\u00e3y lu\u00f4n \u0111\u1ea3m b\u1ea3o c\u00e1p \u0111\u01b0\u1ee3c ng\u1eaft k\u1ebft n\u1ed1i tr\u01b0\u1edbc khi ki\u1ec3m tra.<\/p>\n\n\n\n<p><strong>! <\/strong><strong>C\u00e1c h\u1ea1t th\u1ee7y tinh si\u00eau nh\u1ecf: <\/strong>C\u00e1p tr\u00ean s\u1ee3i quang bao g\u1ed3m c\u00e1c s\u1ee3i th\u1ee7y tinh m\u1ecfng. V\u00ec v\u1eady, khi c\u00e1p \u0111\u01b0\u1ee3c n\u1ed1i, c\u1eaft ho\u1eb7c v\u1ee1, c\u00e1c m\u1ea3nh th\u1ee7y tinh nh\u1ecf c\u00f3 th\u1ec3 bay trong kh\u00f4ng kh\u00ed. Nh\u1eefng h\u1ea1t n\u00e0y kh\u00f4ng nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c v\u00e0 c\u00f3 th\u1ec3 g\u00e2y k\u00edch \u1ee9ng b\u1eb1ng c\u00e1ch \u0111\u00e2m th\u1ee7ng da c\u1ee7a b\u1ea1n. H\u01a1n n\u1eefa, ch\u00fang c\u0169ng c\u00f3 th\u1ec3 g\u00e2y th\u01b0\u01a1ng t\u00edch nghi\u00eam tr\u1ecdng b\u1eb1ng c\u00e1ch x\u00e2m nh\u1eadp v\u00e0o m\u1eaft b\u1ea1n. Ngo\u00e0i ra, ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u00edt v\u00e0o, c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y th\u01b0\u01a1ng t\u00edch cho ph\u1ed5i c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p>V\u00ec v\u1eady, h\u00e3y lu\u00f4n \u0111eo g\u0103ng tay b\u1ea3o h\u1ed9 v\u00e0 k\u00ednh b\u1ea3o v\u1ec7 m\u1eaft \u0111\u1ec3 lo\u1ea1i b\u1ecf r\u1ee7i ro khi x\u1eed l\u00fd s\u1ee3i quang v\u00e0 \u0111\u1ea3m b\u1ea3o x\u1eed l\u00fd r\u00e1c th\u1ea3i th\u1ee7y tinh \u0111\u00fang c\u00e1ch.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXeqZECcl8yNj6GS3omFl97BTsUpXSAFHkHyxnm-f27kXfmkuDV_8z5ZN1NHdsrr7Sx-oDbF4Fsq3hl-RnaVyW5WYfYtPmYb_StpQ4BgZVON_q6cVmRcccMsRpUkJg5wyW816rNPqg?key=i-y5Nu84igTarKiERWzDwtVc\" alt=\"Quy t\u1eafc an to\u00e0n c\u1ee7a c\u00e1p quang\"\/><\/figure>\n\n\n\n<p>H\u00ecnh s\u1ed1 5 Quy \u0111\u1ecbnh an to\u00e0n c\u00e1p quang<\/p>\n\n\n\n<p><strong>! <\/strong><strong>L\u1edbp ph\u1ee7 h\u00f3a h\u1ecdc v\u00e0 l\u1edbp b\u1ea3o v\u1ec7:<\/strong> M\u1ed9t s\u1ed1 lo\u1ea1i c\u00e1p quang c\u00f3 l\u1edbp ph\u1ee7 h\u00f3a h\u1ecdc \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n. C\u00e1c l\u1edbp ph\u1ee7 nh\u01b0 v\u1eady r\u1ea5t \u0111\u1ed9c h\u1ea1i trong tr\u01b0\u1eddng h\u1ee3p ti\u1ebfp x\u00fac qua da ho\u1eb7c h\u00edt ph\u1ea3i. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao c\u1ea7n r\u1eeda tay sau khi x\u1eed l\u00fd c\u00e1p quang \u0111\u1ec3 ng\u0103n ng\u1eeba kh\u1ea3 n\u0103ng nu\u1ed1t ph\u1ea3i.&nbsp;&nbsp;<\/p>\n\n\n\n<p><strong>! <\/strong><strong>An to\u00e0n ch\u1ed1ng r\u00f2 r\u1ec9 v\u00e0 can thi\u1ec7p d\u1eef li\u1ec7u:<\/strong> So v\u1edbi d\u00e2y \u0111\u1ed3ng, c\u00e1p quang kh\u00f3 b\u1ecb khai th\u00e1c h\u01a1n nhi\u1ec1u v\u00ec ch\u00fang kh\u00f4ng truy\u1ec1n t\u00edn hi\u1ec7u \u0111i\u1ec7n, khi\u1ebfn vi\u1ec7c ch\u1eb7n d\u1eef li\u1ec7u tr\u1edf n\u00ean c\u1ef1c k\u1ef3 kh\u00f3 kh\u0103n. C\u00e1p quang c\u0169ng kh\u00f4ng ph\u00e1t ra nhi\u1ec5u \u0111i\u1ec7n t\u1eeb, \u0111\u1ea3m b\u1ea3o b\u1ea3o v\u1ec7 cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed kh\u00e1c trong v\u00f9ng l\u00e2n c\u1eadn.&nbsp;&nbsp;<\/p>\n\n\n\n<p>V\u00ec v\u1eady, n\u1ebfu \u0111\u01b0\u1ee3c b\u1ea3o tr\u00ec \u0111\u00fang c\u00e1ch, c\u00e1p quang mang l\u1ea1i \u0111\u1ed9 an to\u00e0n v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 truy\u1ec1n th\u00f4ng v\u00e0 m\u1ea1ng kh\u00e1c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4) C\u00e1p quang c\u00f3 d\u1eabn \u0111i\u1ec7n kh\u00f4ng?<\/strong><\/h2>\n\n\n\n<p>Kh\u00f4ng, c\u00e1p quang kh\u00f4ng d\u1eabn \u0111i\u1ec7n. B\u1ea3n ch\u1ea5t kh\u00f4ng d\u1eabn \u0111i\u1ec7n n\u00e0y gi\u00fap c\u00e1p quang an to\u00e0n tr\u01b0\u1edbc c\u00e1c m\u1ed1i nguy hi\u1ec3m v\u1ec1 \u0111i\u1ec7n.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>T\u1ea1i sao s\u1ee3i quang kh\u00f4ng d\u1eabn \u0111i\u1ec7n&nbsp;&nbsp;<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u: <\/strong>C\u00e1c v\u1eadt li\u1ec7u phi kim lo\u1ea1i nh\u01b0 th\u1ee7y tinh v\u00e0 nh\u1ef1a t\u1ea1o n\u00ean c\u00e1p quang kh\u00f4ng th\u1ec3 d\u1eabn \u0111i\u1ec7n \u0111\u01b0\u1ee3c.&nbsp;&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n d\u1eef li\u1ec7u: <\/strong>H\u01a1n n\u1eefa, kh\u00f4ng c\u00f3 d\u00f2ng \u0111i\u1ec7n n\u00e0o ch\u1ea3y qua v\u00ec s\u1ee3i quang truy\u1ec1n c\u00e1c xung \u00e1nh s\u00e1ng do tia laser ho\u1eb7c \u0111\u00e8n LED t\u1ea1o ra.&nbsp;&nbsp;<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXdDc5ecOMI3pMkxiMA43_n3QWf7ljJyTNhx1DxGH_YlWwBzi2iUGPumiv623yOorMIjOWdmL_b4G_rBn7W4HkSk0m0GO29kMOtP4XJpSs5a8cLa0c_P3OA1E-n6OrqPX-llmUU3rg?key=i-y5Nu84igTarKiERWzDwtVc\" alt=\"B\u1ea3n ch\u1ea5t kh\u00f4ng d\u1eabn \u0111i\u1ec7n c\u1ee7a s\u1ee3i quang\"\/><\/figure>\n\n\n\n<p>H\u00ecnh s\u1ed1 6 B\u1ea3n ch\u1ea5t kh\u00f4ng d\u1eabn \u0111i\u1ec7n c\u1ee7a s\u1ee3i quang<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>L\u1ee3i \u00edch th\u1ef1c t\u1ebf c\u1ee7a t\u00ednh kh\u00f4ng d\u1eabn \u0111i\u1ec7n&nbsp;&nbsp;<\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong>+ <\/strong><strong>C\u00e0i \u0111\u1eb7t an to\u00e0n h\u01a1n:<\/strong> \u0110\u1ea7u ti\u00ean, nh\u1eefng khu v\u1ef1c c\u00f3 n\u01b0\u1edbc, k\u1ebft c\u1ea5u kim lo\u1ea1i ho\u1eb7c \u0111i\u1ec7n \u00e1p cao c\u0169ng an to\u00e0n \u0111\u1ec3 l\u1eafp \u0111\u1eb7t c\u00e1p quang v\u00ec kh\u00f4ng c\u00f3 nguy c\u01a1 v\u1ec1 \u0111i\u1ec7n.&nbsp;&nbsp;<\/p>\n\n\n\n<p><strong>+ <\/strong><strong>Kh\u00f4ng c\u00f3 nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI):<\/strong> Ngo\u00e0i ra, c\u00e1p quang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf nh\u1eefng n\u01a1i c\u00f3 thi\u1ebft b\u1ecb \u0111i\u1ec7n n\u1eb7ng v\u00ec ch\u00fang kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eeb nh\u01b0 d\u00e2y kim lo\u1ea1i.&nbsp;&nbsp;<\/p>\n\n\n\n<p><strong>+ <\/strong><strong>Ch\u1ed1ng s\u00e9t t\u1ed1t h\u01a1n: <\/strong>C\u00e1p kim lo\u1ea1i th\u00f4ng th\u01b0\u1eddng d\u1ec5 b\u1ecb s\u00e9t \u0111\u00e1nh, nh\u01b0ng m\u1ea1ng c\u00e1p quang th\u00ec kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng v\u00ec ch\u00fang kh\u00f4ng d\u1eabn d\u00f2ng \u0111i\u1ec7n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>5) C\u00e1p quang \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng g\u00ec?<\/strong><\/h2>\n\n\n\n<p>Hai v\u1eadt li\u1ec7u ch\u00ednh t\u1ea1o n\u00ean c\u00e1p quang l\u00e0 th\u1ee7y tinh v\u00e0 nh\u1ef1a. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn v\u00ec kh\u1ea3 n\u0103ng truy\u1ec1n \u00e1nh s\u00e1ng \u1edf kho\u1ea3ng c\u00e1ch xa m\u00e0 \u00edt b\u1ecb m\u1ea5t ch\u1ea5t l\u01b0\u1ee3ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng ph\u00e2n t\u00edch <a href=\"https:\/\/dekam-fiber.com\/vi\/fiber-optic-materials\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1p quang \u0111\u01b0\u1ee3c l\u00e0m nh\u01b0 th\u1ebf n\u00e0o<\/a>:&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>i) L\u00f5i<\/strong><\/h3>\n\n\n\n<p>\u00c1nh s\u00e1ng \u0111i qua l\u00f5i, l\u00e0 ph\u1ea7n gi\u1eefa c\u1ee7a c\u00e1p. L\u00f5i th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng th\u1ee7y tinh ho\u1eb7c nh\u1ef1a:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Th\u1ee7y tinh: <\/strong>H\u1ea7u nh\u01b0 t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i c\u00e1p quang \u0111\u1ec1u \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb th\u1ee7y tinh silica c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao v\u00ec n\u00f3 cho ph\u00e9p \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i qua kho\u1ea3ng c\u00e1ch xa v\u1edbi r\u1ea5t \u00edt s\u1ef1 suy gi\u1ea3m t\u00edn hi\u1ec7u. Ngo\u00e0i ra, th\u1ee7y tinh c\u1ef1c k\u1ef3 b\u1ec1n v\u00e0 \u0111\u00e0n h\u1ed3i, l\u00fd t\u01b0\u1edfng \u0111\u1ec3 s\u1eed d\u1ee5ng trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng v\u00e0 internet.&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Nh\u1ef1a: <\/strong>M\u1ed9t s\u1ed1 lo\u1ea1i c\u00e1p t\u1ea7m ng\u1eafn ho\u1eb7c gi\u00e1 r\u1ebb thay th\u1ebf l\u00f5i th\u1ee7y tinh b\u1eb1ng l\u00f5i nh\u1ef1a. M\u1eb7c d\u00f9 r\u1ebb h\u01a1n, nh\u01b0ng ch\u00fang c\u00f3 nh\u01b0\u1ee3c \u0111i\u1ec3m \u0111\u00e1ng k\u1ec3 l\u00e0 suy gi\u1ea3m t\u00edn hi\u1ec7u. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 ch\u00fang m\u1ea5t nhi\u1ec1u \u00e1nh s\u00e1ng h\u01a1n theo kho\u1ea3ng c\u00e1ch so v\u1edbi s\u1ee3i th\u1ee7y tinh.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>ii) L\u1edbp ph\u1ee7&nbsp;<\/strong><\/h3>\n\n\n\n<p>L\u1edbp ph\u1ee7 bao b\u1ecdc l\u00f5i. N\u00f3 c\u0169ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng th\u1ee7y tinh ho\u1eb7c nh\u1ef1a nh\u01b0ng c\u00f3 chi\u1ebft su\u1ea5t th\u1ea5p h\u01a1n l\u00f5i. L\u1edbp ph\u1ee7 c\u00f3 m\u1ee5c \u0111\u00edch quan tr\u1ecdng kh\u00f4ng k\u00e9m l\u00e0 \u0111\u1ea3m b\u1ea3o \u00e1nh s\u00e1ng s\u1ebd v\u1eabn \u1edf b\u00ean trong l\u00f5i b\u1eb1ng c\u00e1ch ph\u1ea3n x\u1ea1 n\u00f3 \u0111\u1ec3 t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i xa th\u00f4ng qua ph\u1ea3n x\u1ea1 to\u00e0n ph\u1ea7n b\u00ean trong.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXf8TyOKwIvg4VPv0eYMIzZ689OFI6REWAqBwgtE_f2xW9Wn2FyeURSVfdjRkOLG6-PsfQaU1JMCxqwKMmn0EDQKCV5BjZJalPEcbFuq_7asEsws1f7UPNmqxnNEFavAujiHHt0f?key=i-y5Nu84igTarKiERWzDwtVc\" alt=\"Th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u s\u1ee3i quang\"\/><\/figure>\n\n\n\n<p>H\u00ecnh s\u1ed1 7 Th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u s\u1ee3i quang<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>iii) L\u1edbp ph\u1ee7<\/strong><\/h3>\n\n\n\n<p>L\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho l\u00f5i v\u00e0 l\u1edbp ph\u1ee7 \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng l\u00ean s\u1ee3i. L\u1edbp b\u1ea3o v\u1ec7 nh\u01b0 v\u1eady th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng polyme (m\u1ed9t th\u00e0nh ph\u1ea7n nh\u1ef1a).<\/p>\n\n\n\n<p>L\u1edbp ph\u1ee7 n\u00e0y c\u0169ng b\u1ea3o v\u1ec7 s\u1ee3i v\u00e0 cung c\u1ea5p \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 linh ho\u1ea1t c\u1ea7n thi\u1ebft \u0111\u1ec3 kh\u00f4ng b\u1ecb \u0111\u1ee9t ho\u1eb7c h\u01b0 h\u1ecfng d\u1ec5 d\u00e0ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>iv) C\u00e1c th\u00e0nh vi\u00ean s\u1ee9c m\u1ea1nh<\/strong><\/h3>\n\n\n\n<p>C\u00e1c th\u00e0nh ph\u1ea7n ch\u1ecbu l\u1ef1c c\u0169ng \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p \u0111\u1ec3 cung c\u1ea5p cho c\u00e1p kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 v\u1ec1 m\u1eb7t c\u1ea5u tr\u00fac v\u00e0 ng\u0103n c\u00e1p b\u1ecb k\u00e9o gi\u00e3n. C\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng th\u00e9p ho\u1eb7c s\u1ee3i Kevlar. Kevlar, m\u1ed9t v\u1eadt li\u1ec7u nh\u1eb9, b\u1ec1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u00e1o ch\u1ed1ng \u0111\u1ea1n, gi\u00fap t\u0103ng th\u00eam \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i cho c\u00e1p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>v) \u00c1o kho\u00e1c ngo\u00e0i<\/strong><\/h3>\n\n\n\n<p>L\u1edbp v\u1ecf ngo\u00e0i b\u1ea3o v\u1ec7 c\u00e1p kh\u1ecfi \u0111\u1ed9 \u1ea9m, h\u01b0 h\u1ecfng v\u1eadt l\u00fd v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng trong khi v\u1eabn cung c\u1ea5p c\u00e1c y\u1ebfu t\u1ed1 b\u1ea3o v\u1ec7 kh\u00e1c. L\u1edbp v\u1ecf ngo\u00e0i \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb nh\u1ef1a nh\u01b0 PVC v\u00e0 Teflon, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i h\u00f3a ch\u1ea5t, tia UV v\u00e0 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.<\/p>\n\n\n\n<p>T\u00f3m l\u1ea1i, c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a l\u1edbp v\u1ecf ngo\u00e0i v\u00e0 trong c\u1ee7a c\u00e1p quang l\u00e0 th\u1ee7y tinh v\u00e0 nh\u1ef1a trong khi c\u00e1c l\u1edbp b\u1ea3o v\u1ec7 v\u00e0 th\u00e0nh ph\u1ea7n ch\u1ecbu l\u1ef1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u0103ng th\u00eam \u0111\u1ed9 tin c\u1eady trong nhi\u1ec1u \u1ee9ng d\u1ee5ng h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>6) C\u00e1p quang c\u00f3 ph\u00e1t ra b\u1ee9c x\u1ea1 kh\u00f4ng?<\/strong><\/h2>\n\n\n\n<p>C\u00e1p quang kh\u00f4ng ph\u00e1t ra b\u1ea5t k\u1ef3 b\u1ee9c x\u1ea1 n\u00e0o nh\u01b0 tia X ho\u1eb7c vi s\u00f3ng. Thay v\u00e0o \u0111\u00f3, ch\u00fang mang t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng, t\u1ea1o th\u00e0nh m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n t\u1eeb, \u0111\u00f3 l\u00e0 \u00e1nh s\u00e1ng h\u1ed3ng ngo\u1ea1i. \u00c1nh s\u00e1ng h\u1ed3ng ngo\u1ea1i kh\u00f4ng g\u00e2y h\u1ea1i v\u00e0 c\u00f3 b\u01b0\u1edbc s\u00f3ng d\u00e0i h\u01a1n b\u1ee9c x\u1ea1 c\u1ef1c t\u00edm ho\u1eb7c tia X.&nbsp;<\/p>\n\n\n\n<p>H\u01a1n n\u1eefa, laser v\u00e0 \u0111\u00e8n LED \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ngu\u1ed3n s\u00e1ng trong s\u1ee3i quang v\u00e0 m\u1eb7c d\u00f9 ch\u00fang c\u00f3 th\u1ec3 r\u1ea5t m\u1ea1nh, nh\u01b0ng \u00e1nh s\u00e1ng ch\u1ec9 \u0111\u01b0\u1ee3c truy\u1ec1n d\u1ecdc theo s\u1ee3i quang v\u00e0 kh\u00f4ng ph\u00e1t ra kh\u1ecfi h\u1ec7 th\u1ed1ng. H\u01a1n n\u1eefa, tr\u00e1i ng\u01b0\u1ee3c v\u1edbi c\u00e1p \u0111i\u1ec7n, s\u1ee3i quang kh\u00f4ng b\u1ecb nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI). \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 ch\u00fang kh\u00f4ng g\u00e2y nhi\u1ec5u cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed \u0111\u01b0\u1ee3c \u0111\u1eb7t g\u1ea7n \u0111\u00f3.&nbsp;<\/p>\n\n\n\n<p>S\u1ef1 v\u1eafng m\u1eb7t c\u1ee7a b\u1ee9c x\u1ea1 n\u00e0y l\u00e0 m\u1ed9t l\u00fd do khi\u1ebfn s\u1ee3i quang n\u00e0y \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng \u1edf nh\u1eefng n\u01a1i m\u00e0 nhi\u1ec5u t\u00edn hi\u1ec7u \u0111i\u1ec7n t\u1eed c\u00f3 th\u1ec3 g\u00e2y ra v\u1ea5n \u0111\u1ec1 kh\u00f3 kh\u0103n, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ec7nh vi\u1ec7n v\u00e0 c\u01a1 s\u1edf qu\u00e2n s\u1ef1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>7) L\u1eddi cu\u1ed1i c\u00f9ng<\/strong><\/h2>\n\n\n\n<p>T\u00f3m l\u1ea1i, c\u00f4ng ngh\u1ec7 s\u1ee3i quang l\u00e0 ph\u01b0\u01a1ng ph\u00e1p nhanh nh\u1ea5t, \u0111\u00e1ng tin c\u1eady nh\u1ea5t v\u00e0 an to\u00e0n nh\u1ea5t \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u trong t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng. N\u00f3 v\u01b0\u1ee3t tr\u1ed9i h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1p \u0111\u1ed3ng truy\u1ec1n th\u1ed1ng \u1edf h\u1ea7u h\u1ebft m\u1ecdi ch\u1ec9 s\u1ed1, \u0111\u1eb7c bi\u1ec7t l\u00e0 kho\u1ea3ng c\u00e1ch v\u00e0 t\u1ed1c \u0111\u1ed9 cao. N\u1ebfu b\u1ea1n mu\u1ed1n mua c\u00e1p quang ch\u1ea5t l\u01b0\u1ee3ng, Dekam Fiber l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi. S\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i \u0111\u00e1ng tin c\u1eady v\u00e0 b\u1ec1n b\u1ec9, \u0111\u1ea3m b\u1ea3o gi\u00e1 tr\u1ecb \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u m\u1ea1ng c\u1ee7a b\u1ea1n. V\u00ec v\u1eady, <a href=\"https:\/\/dekam-fiber.com\/vi\/contact-dekam\/\" target=\"_blank\" rel=\"noreferrer noopener\">li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i <\/a>H\u00f4m nay!<\/p>","protected":false},"excerpt":{"rendered":"<p>Optical fiber technology is one of the most significant advances in telecommunications that has made connecting and communicating in today&#8217;s world much easier, faster, and more reliable than ever. Unlike regular cables, optical fibers utilize light as a medium for transmitting data, which allows connections to be made much more [&hellip;]<\/p>","protected":false},"author":1,"featured_media":18246,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"How Does Optical Fiber Work? 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