{"id":3158,"date":"2025-03-27T09:15:20","date_gmt":"2025-03-27T09:15:20","guid":{"rendered":"https:\/\/commmesh.com\/?p=3158"},"modified":"2025-04-03T06:43:51","modified_gmt":"2025-04-03T06:43:51","slug":"fiber-optic-cable-splice","status":"publish","type":"post","link":"https:\/\/commmesh.com\/vi\/fiber-optic-cable-splice\/","title":{"rendered":"N\u1ed1i c\u00e1p quang: H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7"},"content":{"rendered":"<p>Ngh\u0129 v\u1ec1 m\u1ed9t <em>m\u1ed1i n\u1ed1i c\u00e1p quang<\/em> nh\u01b0 \u0111\u01b0\u1eddng kh\u00e2u li\u1ec1n m\u1ea1ch gi\u00fap d\u1eef li\u1ec7u ch\u1ea3y qua c\u00e1c s\u1ee3i m\u1ecfng manh c\u1ee7a m\u1ea1ng l\u01b0\u1edbi\u2014gi\u1ed1ng nh\u01b0 m\u1ed9t th\u1ee3 may b\u1eadc th\u1ea7y \u0111ang kh\u00e2u v\u1ea3i m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c. Cho d\u00f9 s\u1eeda ch\u1eefa c\u00e1p b\u1ecb \u0111\u1ee9t hay k\u00e9o d\u00e0i \u0111\u01b0\u1eddng ch\u1ea1y s\u1ee3i quang, <em>n\u1ed1i s\u1ee3i quang<\/em> \u0111\u1ea3m b\u1ea3o t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng truy\u1ec1n \u0111i kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n qua kho\u1ea3ng c\u00e1ch xa ho\u1eb7c kh\u00f4ng gian ch\u1eadt h\u1eb9p. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 m\u1ecdi th\u1ee9 v\u1ec1 <em>m\u1ed1i n\u1ed1i c\u00e1p quang<\/em>-t\u1eeb <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em> nh\u1eefng \u0111i\u1ec1u c\u01a1 b\u1ea3n \u0111\u1ec3 <em>c\u00e1ch n\u1ed1i c\u00e1p quang<\/em> t\u1eebng b\u01b0\u1edbc\u2014bao g\u1ed3m c\u00e1c c\u00f4ng c\u1ee5, k\u1ef9 thu\u1eadt v\u00e0 m\u1eb9o th\u1ef1c t\u1ebf. V\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p nh\u01b0 c\u1ee7a CommMesh, b\u1ea1n s\u1ebd th\u1ea5y l\u00fd do t\u1ea1i sao th\u00e0nh th\u1ea1o <em>n\u1ed1i c\u00e1p quang<\/em> l\u00e0 ch\u00eca kh\u00f3a cho k\u1ebft n\u1ed1i m\u1ea1nh m\u1ebd. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 ngh\u1ec7 thu\u1eadt v\u00e0 khoa h\u1ecdc c\u1ee7a <em>k\u1ef9 thu\u1eadt n\u1ed1i s\u1ee3i<\/em> v\u00e0 b\u1eaft \u0111\u1ea7u th\u00f4i!<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\">M\u1ed1i n\u1ed1i c\u00e1p quang l\u00e0 g\u00ec?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-cable-splice.jpg\"><img fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-cable-splice.jpg\" alt=\"m\u1ed1i n\u1ed1i c\u00e1p quang\" class=\"wp-image-3161\" srcset=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-cable-splice.jpg 600w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-cable-splice-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><figcaption class=\"wp-element-caption\">m\u1ed1i n\u1ed1i c\u00e1p quang<\/figcaption><\/figure>\n\n\n\n<p>M\u1ed8T <em>m\u1ed1i n\u1ed1i c\u00e1p quang<\/em> l\u00e0 qu\u00e1 tr\u00ecnh n\u1ed1i c\u1ed1 \u0111\u1ecbnh hai s\u1ee3i c\u00e1p quang \u0111\u1ec3 t\u1ea1o ra \u0111\u01b0\u1eddng d\u1eabn \u00e1nh s\u00e1ng li\u00ean t\u1ee5c\u2014r\u1ea5t quan tr\u1ecdng khi c\u00e1p b\u1ecb c\u1eaft, h\u1ecfng ho\u1eb7c c\u1ea7n k\u00e9o d\u00e0i. Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c \u0111\u1ea7u n\u1ed1i, cho ph\u00e9p li\u00ean k\u1ebft t\u1ea1m th\u1eddi, <em>m\u1ed1i n\u1ed1i c\u00e1p quang<\/em> k\u1ebft h\u1ee3p c\u00e1c s\u1ee3i quang \u0111\u1ec3 gi\u1ea3m thi\u1ec3u m\u1ea5t t\u00edn hi\u1ec7u\u2014v\u00ed d\u1ee5: 0,1 dB so v\u1edbi 0,3 dB \u0111\u1ed1i v\u1edbi \u0111\u1ea7u n\u1ed1i\u2014l\u00e0m cho n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho x\u01b0\u01a1ng s\u1ed1ng vi\u1ec5n th\u00f4ng ho\u1eb7c s\u1eeda ch\u1eefa trung t\u00e2m d\u1eef li\u1ec7u. Trong <em>n\u1ed1i s\u1ee3i quang<\/em>, c\u00f3 hai ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh chi\u1ebfm \u01b0u th\u1ebf: <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em>, l\u00e0m tan ch\u1ea3y c\u00e1c s\u1ee3i v\u1edbi nhau, v\u00e0 n\u1ed1i c\u01a1 h\u1ecdc, gi\u00fap c\u0103n ch\u1ec9nh ch\u00fang v\u1ec1 m\u1eb7t v\u1eadt l\u00fd\u2014m\u1ed7i ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c nhu c\u1ea7u kh\u00e1c nhau.<\/p>\n\n\n\n<p><em>N\u1ed1i s\u1ee3i quang<\/em>\u2014ti\u00eau chu\u1ea9n v\u00e0ng\u2014s\u1eed d\u1ee5ng nhi\u1ec7t \u0111\u1ec3 l\u00e0m n\u00f3ng ch\u1ea3y c\u00e1c \u0111\u1ea7u th\u1ee7y tinh, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n v\u00e0 t\u1ed5n th\u1ea5t th\u1ea5p\u2014v\u00ed d\u1ee5, li\u00ean k\u1ebft 50 km v\u1edbi m\u1ed1i n\u1ed1i 0,05 dB n\u1eb1m trong ng\u00e2n s\u00e1ch 17 dB cho 10G. M\u1ed1i n\u1ed1i c\u01a1 h\u1ecdc, m\u1eb7c d\u00f9 nhanh h\u01a1n, s\u1eed d\u1ee5ng \u1ed1ng b\u1ecdc\u2014v\u00ed d\u1ee5, th\u00eam t\u1ed5n th\u1ea5t 0,2 dB\u2014t\u1ed1t h\u01a1n cho c\u00e1c b\u1ea3n s\u1eeda l\u1ed7i t\u1ea1m th\u1eddi. Hi\u1ec3u <em>m\u1ed1i n\u1ed1i c\u00e1p quang l\u00e0 g\u00ec<\/em> thi\u1ebft l\u1eadp b\u1ed1i c\u1ea3nh \u0111\u1ec3 l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn ph\u00f9 h\u1ee3p\u2014cho d\u00f9 b\u1ea1n \u0111ang n\u1ed1i m\u1ed9t \u0111o\u1ea1n \u1ed1ng d\u00e0i 1 km hay m\u1ed9t \u0111o\u1ea1n \u1ed1ng d\u00e0i 100 km.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p n\u1ed1i s\u1ee3i quang trong m\u1ea1ng?<\/h2>\n\n\n\n<p><em>N\u1ed1i s\u1ee3i quang<\/em> n\u1ed5i b\u1eadt trong <em>m\u1ed1i n\u1ed1i c\u00e1p quang<\/em> v\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh l\u00e2u d\u00e0i c\u1ee7a n\u00f3\u2014\u0111\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao n\u00f3 \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng. N\u00f3 l\u00e0m n\u00f3ng ch\u1ea3y c\u00e1c \u0111\u1ea7u s\u1ee3i b\u1eb1ng h\u1ed3 quang \u0111i\u1ec7n\u2014v\u00ed d\u1ee5, \u1edf 2000\u00b0C trong 0,5 gi\u00e2y\u2014t\u1ea1o ra m\u1ed9t li\u00ean k\u1ebft g\u1ea7n nh\u01b0 ho\u00e0n h\u1ea3o v\u1edbi m\u1ee9c suy hao th\u1ea5p t\u1edbi 0,02 dB\u2014v\u00ed d\u1ee5, m\u1ed9t li\u00ean k\u1ebft 20 km v\u1edbi n\u0103m m\u1ed1i n\u1ed1i ch\u1ec9 m\u1ea5t t\u1ed5ng c\u1ed9ng 0,1 dB. \u0110\u1ed9 tin c\u1eady n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u1ea1ng \u0111\u01b0\u1eddng d\u00e0i\u2014h\u00e3y ngh\u0129 \u0111\u1ebfn m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n vi\u1ec5n th\u00f4ng d\u00e0i 150 km\u2014n\u01a1i m\u00e0 m\u1ecdi decibel \u0111\u1ec1u c\u00f3 gi\u00e1 tr\u1ecb\u2014v\u00ed d\u1ee5, duy tr\u00ec m\u1ee9c suy hao t\u1ed5ng c\u1ed9ng d\u01b0\u1edbi 30 dB cho t\u00edn hi\u1ec7u 100G.<\/p>\n\n\n\n<p>Ngo\u00e0i m\u1ee9c t\u1ed5n th\u1ea5t th\u1ea5p, <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em> ch\u1ecbu \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft\u2014v\u00ed d\u1ee5, c\u00e1c ch\u1ed1t \u0111\u00f3ng \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng IP68 b\u1ea3o v\u1ec7 c\u00e1c m\u1ed1i n\u1ed1i trong m\u01b0a ho\u1eb7c b\u1ee5i\u2014kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c m\u1ed1i n\u1ed1i c\u01a1 h\u1ecdc, c\u00f3 th\u1ec3 d\u1ecbch chuy\u1ec3n (m\u1ea5t 0,3 dB theo th\u1eddi gian). \u0110\u1ed1i v\u1edbi <em>n\u1ed1i s\u1ee3i quang<\/em> trong c\u00e1c thi\u1ebft l\u1eadp quan tr\u1ecdng\u2014v\u00ed d\u1ee5, x\u01b0\u01a1ng s\u1ed1ng 5 km c\u1ee7a b\u1ec7nh vi\u1ec7n\u2014\u0111\u1ed9 b\u1ec1n c\u1ee7a ph\u1ea3n \u1ee9ng t\u1ed5ng h\u1ee3p c\u1eaft gi\u1ea3m b\u1ea3o tr\u00ec\u2014v\u00ed d\u1ee5, k\u00e9o d\u00e0i h\u01a1n 20 n\u0103m so v\u1edbi 5-10 n\u0103m c\u1ee7a c\u01a1 h\u1ecdc. Trong <em>n\u1ed1i c\u00e1p quang<\/em> quy\u1ebft \u0111\u1ecbnh, s\u1ef1 h\u1ee3p nh\u1ea5t quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splice.jpg\"><img decoding=\"async\" width=\"1000\" height=\"668\" src=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splice.jpg\" alt=\"M\u1ed1i n\u1ed1i s\u1ee3i quang\" class=\"wp-image-3230\" srcset=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splice.jpg 1000w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splice-300x200.jpg 300w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splice-768x513.jpg 768w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splice-600x401.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption class=\"wp-element-caption\">M\u1ed1i n\u1ed1i s\u1ee3i quang<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">D\u1ee5ng c\u1ee5 n\u1ed1i c\u00e1p quang<\/h2>\n\n\n\n<p>Hi\u1ec7u qu\u1ea3 <em>m\u1ed1i n\u1ed1i c\u00e1p quang<\/em> \u0111\u00f2i h\u1ecfi thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p\u2014sau \u0111\u00e2y l\u00e0 nh\u1eefng g\u00ec b\u1ea1n c\u1ea7n.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>M\u00e1y h\u00e0n quang:<\/strong> Tr\u00e1i tim c\u1ee7a <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em>\u2014v\u00ed d\u1ee5, m\u1ed9t \u0111\u01a1n v\u1ecb $2000 c\u0103n ch\u1ec9nh v\u00e0 l\u00e0m tan ch\u1ea3y c\u00e1c s\u1ee3i c\u00f3 t\u1ed5n th\u1ea5t &lt;0,1 dB\u2014r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi <em>c\u00e1ch n\u1ed1i c\u00e1p quang<\/em> s\u1ea1ch s\u1ebd\u2014v\u00ed d\u1ee5, ch\u1ea1y 10 km trong 10 ph\u00fat.<\/li>\n\n\n\n<li><strong>M\u00e1y c\u1eaft s\u1ee3i:<\/strong> C\u1eaft s\u1ee3i ph\u1eb3ng\u2014v\u00ed d\u1ee5, dao c\u1eaft $500 \u0111\u1ea3m b\u1ea3o g\u00f3c 0,5\u00b0\u2014r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u1ed5n th\u1ea5t <em>k\u1ef9 thu\u1eadt n\u1ed1i s\u1ee3i<\/em>\u2014v\u00ed d\u1ee5, chu\u1ea9n b\u1ecb th\u1ea3 r\u01a1i \u1edf \u0111\u1ed9 cao 1 km.<\/li>\n\n\n\n<li><strong>V\u0169 n\u1eef tho\u00e1t y:<\/strong> Lo\u1ea1i b\u1ecf l\u1edbp ph\u1ee7\u2014v\u00ed d\u1ee5, d\u1ee5ng c\u1ee5 $50 lo\u1ea1i b\u1ecf l\u1edbp v\u1ecf 250 \u03bcm\u2014chu\u1ea9n b\u1ecb s\u1ee3i cho <em>n\u1ed1i s\u1ee3i quang<\/em>\u2014v\u00ed d\u1ee5, ph\u01a1i s\u00e1ng k\u00ednh 125 \u03bcm.<\/li>\n\n\n\n<li><strong>\u1ed0ng n\u1ed1i:<\/strong> B\u1ea3o v\u1ec7 m\u1ed1i n\u1ed1i\u2014v\u00ed d\u1ee5, \u1ed1ng co nhi\u1ec7t $0.10 che ch\u1eafn <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em>\u2014\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ph\u1ea7n \u0111\u00f3ng cho <em>n\u1ed1i c\u00e1p quang<\/em>.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/commmesh.com\/vi\/what-is-otdr\/\" target=\"_blank\" rel=\"noreferrer noopener\">M\u00e1y \u0111o OTDR<\/a>:<\/strong> X\u00e1c minh m\u1ed1i n\u1ed1i\u2014v\u00ed d\u1ee5, m\u1ed9t \u0111\u01a1n v\u1ecb $5000 t\u1eeb CommMesh ki\u1ec3m tra m\u1ed1i n\u1ed1i 0,1 dB \u1edf 5 km\u2014l\u00e0 ch\u00eca kh\u00f3a cho <em>m\u1ed1i n\u1ed1i c\u00e1p quang<\/em> ch\u1ea5t l\u01b0\u1ee3ng.<\/li>\n<\/ul>\n\n\n\n<p>Nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0y l\u00e0m cho <em>c\u00e1ch n\u1ed1i c\u00e1p quang<\/em> ch\u00ednh x\u00e1c\u2014CommMesh cung c\u1ea5p t\u1ea5t c\u1ea3.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/What-Is-OTDR.jpg\"><img decoding=\"async\" width=\"800\" height=\"571\" src=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/What-Is-OTDR.jpg\" alt=\"OTDR l\u00e0 g\u00ec\" class=\"wp-image-3175\" srcset=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/What-Is-OTDR.jpg 800w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/What-Is-OTDR-300x214.jpg 300w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/What-Is-OTDR-768x548.jpg 768w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/What-Is-OTDR-600x428.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption class=\"wp-element-caption\">OTDR l\u00e0 g\u00ec<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1ch n\u1ed1i c\u00e1p quang: t\u1eebng b\u01b0\u1edbc<\/h2>\n\n\n\n<p>L\u00e0m ch\u1ee7 <em>c\u00e1ch n\u1ed1i c\u00e1p quang<\/em> v\u1edbi m\u1ed9t <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em> tu\u00e2n theo m\u1ed9t quy tr\u00ecnh r\u00f5 r\u00e0ng\u2014sau \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Chu\u1ea9n b\u1ecb cho vi\u1ec7c n\u1ed1i c\u00e1p quang<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>D\u1ea3i:<\/strong> Th\u00e1o b\u1ecf l\u1edbp v\u1ecf\u2014v\u00ed d\u1ee5, 2 cm kh\u1ecfi l\u1edbp \u0111\u1ec7m 900 \u03bcm\u2014b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng b\u1ed9 t\u00e1ch $50 \u0111\u1ec3 <em>m\u1ed1i n\u1ed1i c\u00e1p quang<\/em>\u2014\u0111\u1ec3 l\u1ed9 l\u00f5i 125 \u03bcm.<\/li>\n\n\n\n<li><strong>Lau d\u1ecdn:<\/strong> Lau b\u1eb1ng c\u1ed3n\u2014v\u00ed d\u1ee5, kh\u0103n lau $5 \u0111\u1ec3 lo\u1ea1i b\u1ecf b\u1ee5i\u2014\u0111\u1ea3m b\u1ea3o s\u1ea1ch s\u1ebd <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em>\u2014v\u00ed d\u1ee5, tr\u00e1nh m\u1ea5t 0,2 dB t\u1eeb b\u1ee5i b\u1ea9n.<\/li>\n\n\n\n<li><strong>Ch\u1ebb \u0111\u00f4i:<\/strong> C\u1eaft \u1edf g\u00f3c 90\u00b0\u2014v\u00ed d\u1ee5, dao c\u1eaft $500 c\u1eaft s\u1ee3i 50 \u03bcm\u2014r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi <em>n\u1ed1i c\u00e1p quang<\/em> c\u0103n ch\u1ec9nh\u2014m\u1ea5t 5 ph\u00fat cho hai \u0111\u1ea7u.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Th\u1ef1c hi\u1ec7n n\u1ed1i s\u1ee3i quang<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>C\u0103n ch\u1ec9nh:<\/strong> T\u1ea3i s\u1ee3i quang v\u00e0o m\u00e1y gh\u00e9p n\u1ed1i\u2014v\u00ed d\u1ee5, m\u1ed9t \u0111\u01a1n v\u1ecb $2000 t\u1ef1 \u0111\u1ed9ng c\u0103n ch\u1ec9nh l\u00f5i\u2014thi\u1ebft l\u1eadp <em>n\u1ed1i s\u1ee3i quang<\/em>\u2014v\u00ed d\u1ee5, \u0111\u1ed9 ch\u00ednh x\u00e1c 0,01 mm.<\/li>\n\n\n\n<li><strong>C\u1ea7u ch\u00ec:<\/strong> K\u1ebft th\u00fac qu\u00e1 tr\u00ecnh n\u00f3ng ch\u1ea3y h\u1ed3 quang\u2014v\u00ed d\u1ee5, 0,5 gi\u00e2y \u1edf 2000\u00b0C\u2014t\u1ea1o th\u00e0nh <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em>\u2014v\u00ed d\u1ee5, suy hao 0,05 dB tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n 10 km\u2014m\u1ea5t 1-2 ph\u00fat.<\/li>\n\n\n\n<li><strong>B\u1ea3o v\u1ec7:<\/strong> Tr\u01b0\u1ee3t m\u1ed9t \u1ed1ng b\u1ecdc qua\u2014v\u00ed d\u1ee5, \u1ed1ng $0.10 co l\u1ea1i trong 30 gi\u00e2y\u2014\u0111\u1ec3 c\u1ed1 \u0111\u1ecbnh <em>m\u1ed1i n\u1ed1i c\u00e1p quang<\/em>\u2014t\u1ed5ng th\u1eddi gian 10-15 ph\u00fat.<\/li>\n<\/ul>\n\n\n\n<p>Ki\u1ec3m tra b\u1eb1ng OTDR\u2014v\u00ed d\u1ee5, m\u1ea5t 0,1 dB x\u00e1c nh\u1eadn th\u00e0nh c\u00f4ng\u2014l\u00e0m <em>c\u00e1ch n\u1ed1i c\u00e1p quang<\/em> \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splicing-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splicing-1.jpg\" alt=\"N\u1ed1i s\u1ee3i quang\" class=\"wp-image-3232\" srcset=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splicing-1.jpg 1000w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splicing-1-300x300.jpg 300w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splicing-1-150x150.jpg 150w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splicing-1-768x768.jpg 768w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splicing-1-600x600.jpg 600w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-Fusion-Splicing-1-100x100.jpg 100w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption class=\"wp-element-caption\">N\u1ed1i s\u1ee3i quang<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">N\u1ed1i c\u01a1 h\u1ecdc so v\u1edbi n\u1ed1i s\u1ee3i quang<\/h2>\n\n\n\n<p>TRONG <em>m\u1ed1i n\u1ed1i c\u00e1p quang<\/em>, gh\u00e9p n\u1ed1i c\u01a1 h\u1ecdc cung c\u1ea5p m\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf cho <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em>. N\u00f3 c\u0103n ch\u1ec9nh c\u00e1c s\u1ee3i trong m\u1ed9t \u1ed1ng b\u1ecdc\u2014v\u00ed d\u1ee5, b\u1ed9 d\u1ee5ng c\u1ee5 $5 v\u1edbi t\u1ed5n th\u1ea5t 0,2 dB\u2014m\u00e0 kh\u00f4ng b\u1ecb tan ch\u1ea3y, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c b\u1ea3n s\u1eeda l\u1ed7i nhanh\u2014v\u00ed d\u1ee5, s\u1eeda ch\u1eefa kh\u1ea9n c\u1ea5p 500m trong 5 ph\u00fat\u2014so v\u1edbi 15 ph\u00fat c\u1ee7a fusion. Kh\u00f4ng c\u1ea7n m\u00e1y gh\u00e9p n\u1ed1i\u2014ch\u1ec9 c\u1ea7n dao ch\u1eb7t v\u00e0 dao t\u01b0\u1edbc\u2014chi ph\u00ed c\u1eaft\u2014v\u00ed d\u1ee5, $100 so v\u1edbi $2000 cho <em>k\u1ef9 thu\u1eadt n\u1ed1i s\u1ee3i<\/em>.<\/p>\n\n\n\n<p>Tuy nhi\u00ean, <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em> chi\u1ebfn th\u1eafng cho t\u00ednh l\u00e2u d\u00e0i\u2014v\u00ed d\u1ee5, 0,05 dB so v\u1edbi m\u1ea5t m\u00e1t 0,3 dB\u2014v\u00e0 t\u00ednh \u1ed5n \u0111\u1ecbnh\u2014v\u00ed d\u1ee5, s\u1ef1 thay \u0111\u1ed5i c\u01a1 h\u1ecdc v\u1ec1 nhi\u1ec7t (0,5 dB trong nhi\u1ec1u n\u0103m). \u0110\u1ed1i v\u1edbi <em>n\u1ed1i c\u00e1p quang<\/em> trong c\u00e1c thi\u1ebft l\u1eadp t\u1ea1m th\u1eddi\u2014v\u00ed d\u1ee5, \u0111\u01b0\u1eddng li\u00ean k\u1ebft s\u1ef1 ki\u1ec7n d\u00e0i 1 km\u2014c\u00f4ng tr\u00ecnh c\u01a1 kh\u00ed; trong c\u00e1c thi\u1ebft l\u1eadp d\u00e0i h\u1ea1n\u2014v\u00ed d\u1ee5, \u0111\u01b0\u1eddng li\u00ean k\u1ebft vi\u1ec5n th\u00f4ng d\u00e0i 50 km\u2014ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p l\u00e0 t\u1ed1t nh\u1ea5t. <em>N\u1ed1i s\u1ee3i quang<\/em> s\u1ef1 l\u1ef1a ch\u1ecdn ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee5c ti\u00eau.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nh\u1eefng th\u00e1ch th\u1ee9c trong vi\u1ec7c n\u1ed1i c\u00e1p quang<\/h2>\n\n\n\n<p><em>N\u1ed1i c\u00e1p quang<\/em> ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng r\u00e0o c\u1ea3n\u2014\u0111\u00e2y l\u00e0 nh\u1eefng g\u00ec c\u1ea7n ch\u00fa \u00fd. S\u1ee3i b\u1ea9n\u2014v\u00ed d\u1ee5, b\u1ee5i l\u00e0m t\u0103ng th\u00eam 0,2 dB m\u1ea5t m\u00e1t\u2014c\u1ea7n lau $5\u2014v\u00ed d\u1ee5, m\u1ed1i n\u1ed1i 5 km b\u1ecb h\u1ecfng \u1edf m\u1ee9c 0,5 dB. C\u1eaft x\u1ea5u\u2014v\u00ed d\u1ee5, g\u00f3c 2\u00b0\u2014l\u00e0m m\u1ea5t m\u00e1t nh\u1ea3y l\u00ean 0,3 dB\u2014\u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c b\u1eb1ng dao c\u1eaft $500\u2014r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em>. Th\u1eddi ti\u1ebft\u2014v\u00ed d\u1ee5, -20\u00b0C l\u00e0m c\u1ee9ng c\u00e1p\u2014l\u00e0m ch\u1eadm <em>c\u00e1ch n\u1ed1i c\u00e1p quang<\/em>\u2014v\u00ed d\u1ee5, 20 ph\u00fat so v\u1edbi 10 ph\u00fat trong nh\u00e0.<\/p>\n\n\n\n<p>Chi ph\u00ed thi\u1ebft b\u1ecb\u2014v\u00ed d\u1ee5, m\u00e1y h\u00e0n $2000\u2014l\u00e0m n\u1ea3n l\u00f2ng c\u00e1c \u0111\u1ed9i nh\u1ecf\u2014v\u00ed d\u1ee5, b\u1ed9 d\u1ee5ng c\u1ee5 c\u01a1 kh\u00ed $500 thay v\u00e0o \u0111\u00f3 l\u1ea1i h\u1ea5p d\u1eabn\u2014nh\u01b0ng <em>n\u1ed1i s\u1ee3i quang<\/em> ch\u1ea5t l\u01b0\u1ee3ng b\u1ecb \u1ea3nh h\u01b0\u1edfng\u2014v\u00ed d\u1ee5, 0,4 dB so v\u1edbi 0,1 dB. K\u1ef9 n\u0103ng quan tr\u1ecdng\u2014v\u00ed d\u1ee5, m\u1ed1i n\u1ed1i 0,5 dB c\u1ee7a ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u so v\u1edbi 0,05 dB c\u1ee7a ng\u01b0\u1eddi chuy\u00ean nghi\u1ec7p\u2014\u0111\u00e0o t\u1ea1o ($500) s\u1ebd mang l\u1ea1i hi\u1ec7u qu\u1ea3. <em>N\u1ed1i c\u00e1p quang<\/em> c\u1ea7n \u0111\u01b0\u1ee3c ch\u0103m s\u00f3c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Chi ph\u00ed v\u00e0 thi\u1ebft b\u1ecb cho vi\u1ec7c n\u1ed1i c\u00e1p quang<\/h2>\n\n\n\n<p><em>N\u1ed1i c\u00e1p quang<\/em> chi ph\u00ed thay \u0111\u1ed5i\u2014sau \u0111\u00e2y l\u00e0 t\u00f3m t\u1eaft. A <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em> thi\u1ebft l\u1eadp\u2014m\u00e1y n\u1ed1i ($2000), m\u00e1y c\u1eaft ($500), m\u00e1y t\u01b0\u1edbc ($50)\u2014t\u1ed5ng c\u1ed9ng ~$2600\u2014v\u00ed d\u1ee5, n\u1ed1i m\u1ed9t li\u00ean k\u1ebft d\u00e0i 10 km trong m\u1ed9t ng\u00e0y\u2014bao g\u1ed3m c\u1ea3 nh\u00e2n c\u00f4ng $0,26\/m. B\u1ed9 d\u1ee5ng c\u1ee5 c\u01a1 kh\u00ed\u2014$100\u2014ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c c\u00f4ng vi\u1ec7c nhanh\u2014v\u00ed d\u1ee5, s\u1eeda ch\u1eefa 500m cho $50\u2014nh\u01b0ng <em>n\u1ed1i c\u00e1p quang<\/em> m\u1ea5t m\u00e1t t\u0103ng l\u00ean\u20140,3 dB so v\u1edbi 0,1 dB.<\/p>\n\n\n\n<p>C\u00e1p b\u1ed5 sung\u2014v\u00ed d\u1ee5, $0,50\/m cho ch\u1ebf \u0111\u1ed9 \u0111\u01a1n\u2014$500 cho 1 km\u2014trong khi \u1ed1ng b\u1ecdc ($0,10) v\u00e0 kh\u00f3a ($20) b\u1ea3o v\u1ec7 <em>n\u1ed1i s\u1ee3i quang<\/em>\u2014v\u00ed d\u1ee5, $30 cho m\u1ed9t l\u1ea7n ch\u1ea1y 10 m\u1ed1i n\u1ed1i. CommMesh cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5\u2014v\u00ed d\u1ee5, m\u00e1y n\u1ed1i $2000\u2014c\u00e2n b\u1eb1ng chi ph\u00ed v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cho <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">K\u1ebft lu\u1eadn: L\u00e0m ch\u1ee7 vi\u1ec7c n\u1ed1i c\u00e1p quang<\/h2>\n\n\n\n<p><em>N\u1ed1i c\u00e1p quang<\/em> k\u1ebft n\u1ed1i c\u00e1c m\u1ea1ng l\u01b0\u1edbi l\u1ea1i v\u1edbi nhau m\u1ed9t c\u00e1ch tinh t\u1ebf\u2014cho d\u00f9 th\u00f4ng qua <em>m\u1ed1i n\u1ed1i s\u1ee3i quang<\/em> ho\u1eb7c ph\u01b0\u01a1ng ti\u1ec7n c\u01a1 h\u1ecdc\u2014gi\u1ed1ng nh\u01b0 m\u1ed9t ng\u01b0\u1eddi th\u1ee3 th\u1ee7 c\u00f4ng d\u1ec7t m\u1ed9t \u0111\u01b0\u1eddng kh\u00e2u ho\u00e0n h\u1ea3o. H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u00e3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u1ea5t c\u1ea3\u2014nh\u1eefng g\u00ec <em>n\u1ed1i s\u1ee3i quang<\/em> l\u00e0, <em>c\u00e1ch n\u1ed1i c\u00e1p quang<\/em>v\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c c\u00f4ng c\u1ee5 t\u1eeb CommMesh\u2014b\u1eaft \u0111\u1ea7u t\u1eeb $50\u2014l\u00e0m cho n\u00f3 ho\u1ea1t \u0111\u1ed9ng. T\u1eeb 1 km <a href=\"https:\/\/commmesh.com\/vi\/what-is-ftth\/\" target=\"_blank\" rel=\"noreferrer noopener\">FTTH<\/a> th\u1ea3 xu\u1ed1ng c\u1ed1p xe 100 km, <em>n\u1ed1i c\u00e1p quang<\/em> v\u1edbi <em>k\u1ef9 thu\u1eadt n\u1ed1i s\u1ee3i<\/em> gi\u1eef cho d\u1eef li\u1ec7u ch\u1ea3y. Master <em>m\u1ed1i n\u1ed1i c\u00e1p quang<\/em> h\u00f4m nay v\u00e0 x\u00e2y d\u1ef1ng nh\u1eefng m\u1ed1i quan h\u1ec7 b\u1ec1n v\u1eefng!<\/p>","protected":false},"excerpt":{"rendered":"<p>H\u00e3y ngh\u0129 v\u1ec1 m\u1ed1i n\u1ed1i c\u00e1p quang nh\u01b0 m\u1ed9t \u0111\u01b0\u1eddng kh\u00e2u li\u1ec1n m\u1ea1ch gi\u00fap d\u1eef li\u1ec7u lu\u00f4n ch\u1ea3y qua c\u00e1c s\u1ee3i m\u1ecfng manh c\u1ee7a m\u1ea1ng l\u01b0\u1edbi\u2014gi\u1ed1ng nh\u01b0 m\u1ed9t th\u1ee3 may l\u00e0nh ngh\u1ec1 n\u1ed1i v\u1ea3i m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c. Cho d\u00f9 s\u1eeda ch\u1eefa c\u00e1p b\u1ecb h\u1ecfng hay k\u00e9o d\u00e0i \u0111\u01b0\u1eddng ch\u1ea1y s\u1ee3i quang, m\u1ed1i n\u1ed1i c\u00e1p quang \u0111\u1ea3m b\u1ea3o t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng truy\u1ec1n \u0111i kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n qua kho\u1ea3ng c\u00e1ch xa ho\u1eb7c kh\u00f4ng gian ch\u1eadt h\u1eb9p. H\u01b0\u1edbng d\u1eabn n\u00e0y [\u2026]<\/p>","protected":false},"author":1,"featured_media":3161,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"34","_seopress_titles_title":"Fiber Optic Cable Splice: The Complete Guide - CommMesh","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[34],"tags":[],"class_list":["post-3158","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts\/3158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/comments?post=3158"}],"version-history":[{"count":11,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts\/3158\/revisions"}],"predecessor-version":[{"id":3291,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts\/3158\/revisions\/3291"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/media\/3161"}],"wp:attachment":[{"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/media?parent=3158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/categories?post=3158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/tags?post=3158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}