{"id":2996,"date":"2025-03-19T07:25:15","date_gmt":"2025-03-19T07:25:15","guid":{"rendered":"https:\/\/commmesh.com\/?p=2996"},"modified":"2025-03-19T09:57:01","modified_gmt":"2025-03-19T09:57:01","slug":"g657a1-vs-g657a2-vs-g652d","status":"publish","type":"post","link":"https:\/\/commmesh.com\/vi\/g657a1-vs-g657a2-vs-g652d\/","title":{"rendered":"So s\u00e1nh s\u1ee3i quang \u0111\u01a1n mode: G657A1 so v\u1edbi G657A2 so v\u1edbi G652D"},"content":{"rendered":"<p>T\u01b0\u1edfng t\u01b0\u1ee3ng <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em> nh\u01b0 m\u1ed9t b\u1ed9 ba v\u1eadn \u0111\u1ed9ng vi\u00ean ch\u1ea1y b\u1ed9 \u0111ang chu\u1ea9n b\u1ecb cho c\u00e1c cu\u1ed9c \u0111ua kh\u00e1c nhau\u2014m\u1ed9t ng\u01b0\u1eddi l\u00e0 nh\u00e0 v\u00f4 \u0111\u1ecbch marathon, m\u1ed9t ng\u01b0\u1eddi l\u00e0 v\u1eadn \u0111\u1ed9ng vi\u00ean ch\u1ea1y n\u01b0\u1edbc r\u00fat \u0111ang lu\u1ed3n l\u00e1ch qua c\u00e1c con ph\u1ed1 trong th\u00e0nh ph\u1ed1, v\u00e0 ng\u01b0\u1eddi th\u1ee9 ba l\u00e0 m\u1ed9t di\u1ec5n vi\u00ean nh\u00e0o l\u1ed9n \u0111ang l\u01b0\u1edbt qua c\u00e1c g\u00f3c cua h\u1eb9p. \u0110\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0 c\u00e1c m\u00e3 k\u1ef9 thu\u1eadt; ch\u00fang l\u00e0 c\u00e1c ti\u00eau chu\u1ea9n c\u00e1p quang do Li\u00ean minh Vi\u1ec5n th\u00f4ng Qu\u1ed1c t\u1ebf \u0111\u1eb7t ra (<a href=\"https:\/\/en.wikipedia.org\/wiki\/International_Telecommunication_Union\" target=\"_blank\" rel=\"noreferrer noopener\">Li\u00ean minh Vi\u1ec5n th\u00f4ng Qu\u1ed1c t\u1ebf<\/a>), \u0111\u1ecbnh ngh\u0129a c\u00e1ch s\u1ee3i th\u1ee7y tinh truy\u1ec1n t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng qua kho\u1ea3ng c\u00e1ch xa ho\u1eb7c kh\u00f4ng gian ch\u1eadt h\u1eb9p. Cho d\u00f9 b\u1ea1n \u0111ang l\u1eafp \u0111\u1eb7t m\u1ea1ng b\u0103ng th\u00f4ng r\u1ed9ng n\u00f4ng th\u00f4n, l\u1eafp d\u00e2y cho c\u0103n h\u1ed9 cao t\u1ea7ng hay k\u1ebft n\u1ed1i m\u00e1y ch\u1ee7 c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u, vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa G657A1, G657A2 ho\u1eb7c G652D c\u0169ng gi\u1ed1ng nh\u01b0 l\u1ef1a ch\u1ecdn c\u00f4ng c\u1ee5 ho\u00e0n h\u1ea3o cho c\u00f4ng vi\u1ec7c.<\/p>\n\n\n\n<p>Trong ph\u1ea7n t\u00ecm hi\u1ec3u s\u00e2u n\u00e0y, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em>\u2014th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, \u0111i\u1ec3m m\u1ea1nh v\u00e0 \u0111i\u1ec3m m\u1ea1nh c\u1ee7a ch\u00fang. H\u00e3y ngh\u0129 v\u1ec1 ch\u00fang nh\u01b0 nh\u1eefng chi\u1ebfc xe th\u1eed nghi\u1ec7m: b\u1ea1n c\u1ea7n m\u00e3 l\u1ef1c v\u00e0 kh\u1ea3 n\u0103ng x\u1eed l\u00fd ph\u00f9 h\u1ee3p v\u1edbi con \u0111\u01b0\u1eddng c\u1ee7a m\u00ecnh. Ch\u00fang t\u00f4i s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ch\u00fang l\u00e0 g\u00ec, ch\u00fang v\u01b0\u1ee3t tr\u1ed9i \u1edf \u0111i\u1ec3m n\u00e0o, ch\u00fang u\u1ed1n cong nh\u01b0 th\u1ebf n\u00e0o, chi ph\u00ed v\u00e0 nhi\u1ec1u h\u01a1n n\u1eefa, t\u1ea5t c\u1ea3 \u0111\u1ec1u h\u01b0\u1edbng \u0111\u1ebfn c\u00e1c s\u1ea3n ph\u1ea9m ch\u1ea5t l\u01b0\u1ee3ng cao c\u1ee7a CommMesh. \u0110\u1ebfn \u0111\u00edch, b\u1ea1n s\u1ebd bi\u1ebft lo\u1ea1i s\u1ee3i n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi d\u1ef1 \u00e1n c\u1ee7a m\u00ecnh\u2014cho d\u00f9 \u0111\u00f3 l\u00e0 \u0111\u01b0\u1eddng d\u00e0i hay \u0111\u01b0\u1eddng h\u1eb9p. H\u00e3y c\u00f9ng ch\u1ea1y th\u1eed v\u00e0 ph\u00e2n t\u00edch nh\u00e9!<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\">Ti\u00eau chu\u1ea9n s\u1ee3i quang G657A1, G657A2 v\u00e0 G652D l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>C\u00e1c <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em> \u0110\u1ed9i h\u00ecnh gi\u1ed1ng nh\u01b0 m\u1ed9t gia \u0111\u00ecnh c\u00e1c b\u1ea3n thi\u1ebft k\u1ebf s\u1ee3i quang\u2014m\u1ed7i b\u1ea3n \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o v\u1edbi m\u1ed9t m\u1ee5c \u0111\u00edch, c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh th\u1ef1c t\u1ebf. C\u00e1c ti\u00eau chu\u1ea9n ITU n\u00e0y ch\u1ec9 \u0111\u1ecbnh c\u00e1ch s\u1ee3i x\u1eed l\u00fd \u00e1nh s\u00e1ng, \u0111\u1ed9 u\u1ed1n v\u00e0 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u, \u0111\u1ecbnh h\u00ecnh vai tr\u00f2 c\u1ee7a ch\u00fang trong c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-2.jpg\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-2.jpg\" alt=\"s\u1ee3i quang 2\" class=\"wp-image-3015\" srcset=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-2.jpg 1000w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-2-300x200.jpg 300w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-2-768x512.jpg 768w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-2-600x400.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption class=\"wp-element-caption\">s\u1ee3i quang<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">G652D: Ng\u00f4i sao c\u1ed5 \u0111i\u1ec3n c\u00f3 kho\u1ea3ng c\u00e1ch xa<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>S\u1ef1 \u0111\u1ecbnh ngh\u0129a:<\/strong> \u00d4ng t\u1ed5 c\u1ee7a s\u1ee3i quang \u0111\u01a1n mode, G652D \u0111\u00e3 ra m\u1eaft c\u00e1ch \u0111\u00e2y nhi\u1ec1u th\u1eadp k\u1ef7 v\u00e0 v\u1eabn l\u00e0 s\u1ea3n ph\u1ea9m ch\u1ee7 l\u1ef1c c\u1ee7a ng\u00e0nh vi\u1ec5n th\u00f4ng. \u0110\u00e2y l\u00e0 bi\u1ebfn th\u1ec3 \u201cD\u201d\u2014\u0111\u1ec9nh n\u01b0\u1edbc th\u1ea5p (LWP)\u2014c\u00f3 ngh\u0129a l\u00e0 n\u00f3 gi\u1ea3m thi\u1ec3u m\u1ea5t t\u00edn hi\u1ec7u do h\u1ea5p th\u1ee5 n\u01b0\u1edbc trong k\u00ednh.<\/li>\n\n\n\n<li><strong>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt:<\/strong> L\u00f5i 8-10 micron, l\u1edbp v\u1ecf 125 micron, \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho b\u01b0\u1edbc s\u00f3ng 1310 nm v\u00e0 1550 nm.<\/li>\n\n\n\n<li><strong>Vai tr\u00f2:<\/strong> \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 c\u00f3 s\u1ee9c b\u1ec1n\u2014gi\u1ed1ng nh\u01b0 m\u1ed9t v\u1eadn \u0111\u1ed9ng vi\u00ean ch\u1ea1y marathon \u0111i \u0111\u1ec1u \u0111\u1eb7n qua nhi\u1ec1u d\u1eb7m.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">G657A1: \u0110\u1ee9a con gi\u1eefa d\u1ec5 u\u1ed1n cong<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>S\u1ef1 \u0111\u1ecbnh ngh\u0129a:<\/strong> L\u00e0 m\u1ed9t s\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a G652D, G657A1 kh\u00f4ng nh\u1ea1y c\u1ea3m v\u1edbi \u0111\u1ed9 cong, \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c thi\u1ebft l\u1eadp hi\u1ec7n \u0111\u1ea1i, xo\u1eafn m\u00e0 kh\u00f4ng b\u1ecb m\u1ea5t t\u00edn hi\u1ec7u. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a gia \u0111\u00ecnh G657, v\u1edbi &quot;A1&quot; \u0111\u00e1nh d\u1ea5u c\u1ea5p \u0111\u1ed9 \u0111\u1ea7u ti\u00ean.<\/li>\n\n\n\n<li><strong>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt:<\/strong> L\u00f5i 8-10 micron gi\u1ed1ng nhau, nh\u01b0ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 u\u1ed1n cong m\u00e0 kh\u00f4ng l\u00e0m gi\u00e1n \u0111o\u1ea1n b\u01b0\u1edbc ti\u1ebfn c\u1ee7a \u0111\u00e8n.<\/li>\n\n\n\n<li><strong>Vai tr\u00f2:<\/strong> M\u1ed9t v\u1eadn \u0111\u1ed9ng vi\u00ean ch\u1ea1y n\u01b0\u1edbc r\u00fat \u0111ang tr\u00e1nh ch\u01b0\u1edbng ng\u1ea1i v\u1eadt trong \u0111\u00f4 th\u1ecb\u2014linh ho\u1ea1t nh\u01b0ng v\u1eabn nhanh nh\u1eb9n.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">G657A2: Th\u1ea7n \u0111\u1ed3ng ch\u1ed1ng u\u1ed1n cong<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>S\u1ef1 \u0111\u1ecbnh ngh\u0129a:<\/strong> Phi\u00ean b\u1ea3n cao c\u1ea5p nh\u1ea5t c\u1ee7a G657, G657A2 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng u\u1ed1n cong t\u1ed1i \u0111a, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho nh\u1eefng kh\u00f4ng gian ch\u1eadt h\u1eb9p nh\u1ea5t, n\u01a1i c\u00e1c s\u1ee3i xo\u1eafn l\u1ea1i nh\u01b0 b\u00e1nh quy xo\u1eafn.<\/li>\n\n\n\n<li><strong>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt:<\/strong> L\u00f5i 8-10 micron, \u0111\u1ed9 cong c\u1ef1c th\u1ea5p\u2014mang \u0111\u1ebfn s\u1ef1 nhanh nh\u1eb9n nh\u01b0 v\u1eadn \u0111\u1ed9ng vi\u00ean nh\u00e0o l\u1ed9n.<\/li>\n\n\n\n<li><strong>Vai tr\u00f2:<\/strong> Gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p cho c\u00e1c m\u1ea1ng c\u00f3 m\u1eadt \u0111\u1ed9 cao, ch\u1eadt h\u1eb9p.<\/li>\n<\/ul>\n\n\n\n<p>CommMesh cung c\u1ea5p c\u1ea3 ba lo\u1ea1i\u2014G652D cho c\u00e1c \u0111\u01b0\u1eddng ch\u1ea1y truy\u1ec1n th\u1ed1ng, G657A1 cho c\u00e1c \u0111\u01b0\u1eddng cong linh ho\u1ea1t v\u00e0 G657A2 cho c\u00e1c \u0111\u01b0\u1eddng xo\u1eafn c\u1ef1c \u0111\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng c\u1ee7a G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/h2>\n\n\n\n<p>M\u1ed7i <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em> s\u1ee3i c\u00f3 s\u00e2n ch\u01a1i c\u1ee7a n\u00f3\u2014gi\u1ed1ng nh\u01b0 c\u00e1c v\u1eadn \u0111\u1ed9ng vi\u00ean \u0111ang nh\u1eb7t c\u1ecf c\u1ee7a h\u1ecd. H\u00e3y c\u00f9ng l\u1eadp b\u1ea3n \u0111\u1ed3 n\u01a1i ch\u00fang ph\u00e1t tri\u1ec3n m\u1ea1nh, v\u1edbi c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf \u0111\u1ec3 l\u00e0m r\u00f5 h\u01a1n.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-3.jpg\"><img decoding=\"async\" width=\"1000\" height=\"670\" src=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-3.jpg\" alt=\"s\u1ee3i quang 3\" class=\"wp-image-3016\" srcset=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-3.jpg 1000w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-3-300x201.jpg 300w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-3-768x515.jpg 768w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-3-600x402.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption class=\"wp-element-caption\">s\u1ee3i quang<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng G652D<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u1ede \u0111\u00e2u:<\/strong> M\u1ea1ng vi\u1ec5n th\u00f4ng \u0111\u01b0\u1eddng d\u00e0i, m\u1ea1ng x\u01b0\u01a1ng s\u1ed1ng internet, tri\u1ec3n khai FTTH \u1edf n\u00f4ng th\u00f4n.<\/li>\n\n\n\n<li><strong>T\u1ea1i sao:<\/strong> \u0110\u01b0\u1ee3c x\u00e2y d\u1ef1ng cho kho\u1ea3ng c\u00e1ch xa\u2014\u0111\u1ed9 suy gi\u1ea3m th\u1ea5p (0,2 dB\/km \u1edf 1550 nm) gi\u00fap t\u00edn hi\u1ec7u m\u1ea1nh tr\u00ean nhi\u1ec1u kilomet. \u0110\u00e2y l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a k\u1ebft n\u1ed1i to\u00e0n c\u1ea7u, li\u00ean k\u1ebft c\u00e1c l\u1ee5c \u0111\u1ecba th\u00f4ng qua c\u00e1p ng\u1ea7m d\u01b0\u1edbi bi\u1ec3n ho\u1eb7c tr\u1ea3i d\u00e0i tr\u00ean kh\u1eafp c\u00e1c \u0111\u1ed3ng b\u1eb1ng.<\/li>\n\n\n\n<li><strong>V\u00ed d\u1ee5:<\/strong> M\u1ed9t c\u00f4ng ty vi\u1ec5n th\u00f4ng s\u1eed d\u1ee5ng G652D \u0111\u1ec3 k\u1ebft n\u1ed1i hai th\u00e0nh ph\u1ed1 c\u00e1ch nhau 50 km ho\u1eb7c m\u1ed9t ISP \u1edf n\u00f4ng th\u00f4n tri\u1ec3n khai n\u00f3 cho FTTH tr\u00ean \u0111o\u1ea1n \u0111\u01b0\u1eddng d\u00e0i 20 km v\u1edbi b\u1ed9 l\u1eb7p t\u1ed1i thi\u1ec3u.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> \u0110\u01b0\u1eddng th\u1eb3ng, r\u1ed9ng m\u1edf, hi\u1ebfm khi ph\u1ea3i r\u1ebd.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng G657A1<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u1ede \u0111\u00e2u:<\/strong> FTTH \u0111\u00f4 th\u1ecb, t\u00f2a nh\u00e0 v\u0103n ph\u00f2ng, m\u1ea1ng l\u01b0\u1edbi tr\u01b0\u1eddng h\u1ecdc v\u1edbi \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u1eeba ph\u1ea3i.<\/li>\n\n\n\n<li><strong>T\u1ea1i sao:<\/strong> B\u00e1n k\u00ednh u\u1ed1n cong (10-15 mm) x\u1eed l\u00fd c\u00e1c g\u00f3c m\u00e0 kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n t\u00edn hi\u1ec7u\u2014ho\u00e0n h\u1ea3o cho h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n trong th\u00e0nh ph\u1ed1 n\u01a1i c\u00e1p lu\u1ed3n qua t\u01b0\u1eddng ho\u1eb7c \u1ed1ng d\u1eabn. N\u00f3 c\u00e2n b\u1eb1ng kho\u1ea3ng c\u00e1ch v\u00e0 t\u00ednh linh ho\u1ea1t.<\/li>\n\n\n\n<li><strong>V\u00ed d\u1ee5:<\/strong> M\u1ed9t khu chung c\u01b0 ch\u1ea1y theo \u0111\u01b0\u1eddng G657A1 t\u1eeb ph\u1ed1 ch\u00ednh \u0111\u1ebfn c\u00e1c c\u0103n h\u1ed9, u\u1ed1n cong quanh c\u00e1c c\u1ea7u thang h\u1eb9p, ho\u1eb7c m\u1ed9t tr\u01b0\u1eddng \u0111\u1ea1i h\u1ecdc n\u1ed1i c\u00e1c k\u00fd t\u00fac x\u00e1 c\u00e1ch nhau 5 km b\u1eb1ng m\u1ed9t s\u1ed1 kh\u00fac cua.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> M\u1eadt \u0111\u1ed9 v\u1eeba ph\u1ea3i, c\u1ea7n u\u1ed1n cong m\u1ed9t ch\u00fat.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u1ee8ng d\u1ee5ng G657A2<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u1ede \u0111\u00e2u:<\/strong> \u0110\u01b0\u1eddng truy\u1ec1n FTTH m\u1eadt \u0111\u1ed9 cao, trung t\u00e2m d\u1eef li\u1ec7u, m\u1ea1ng trong nh\u00e0 c\u00f3 g\u00f3c cua g\u1ea5p.<\/li>\n\n\n\n<li><strong>T\u1ea1i sao:<\/strong> V\u1edbi b\u00e1n k\u00ednh u\u1ed1n cong 7,5 mm, \u0111\u00e2y l\u00e0 vua c\u1ee7a kh\u00f4ng gian ch\u1eadt h\u1eb9p\u2014t\u1ed5n th\u1ea5t t\u00edn hi\u1ec7u v\u1eabn nh\u1ecf (0,1-0,2 dB m\u1ed7i v\u00f2ng) ngay c\u1ea3 trong c\u00e1c thi\u1ebft l\u1eadp ch\u1eadt h\u1eb9p. N\u00f3 l\u00fd t\u01b0\u1edfng \u1edf nh\u1eefng n\u01a1i kh\u00f4ng gian l\u00e0 v\u00e0ng.<\/li>\n\n\n\n<li><strong>V\u00ed d\u1ee5:<\/strong> C\u00e1p th\u1ea3 ph\u1eb3ng s\u1eed d\u1ee5ng G657A2 \u0111\u1ec3 xo\u1eafn t\u1eeb c\u1ed9t v\u00e0o nh\u00e0 ho\u1eb7c trung t\u00e2m d\u1eef li\u1ec7u k\u1eb9p n\u00f3 gi\u1eefa c\u00e1c gi\u00e1 \u0111\u1ee1 m\u00e1y ch\u1ee7 b\u1eb1ng nh\u1eefng kh\u00fac cua tay \u00e1o.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> V\u00f9ng c\u1ef1c k\u1ef3 d\u00e0y \u0111\u1eb7c, u\u1ed1n cong m\u1ea1nh.<\/li>\n<\/ul>\n\n\n\n<p>C\u00e1p G652D c\u1ee7a CommMesh cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n d\u00e0i, trong khi c\u00e1p G657A1\/A2 c\u1ee7a ch\u00fang t\u00f4i linh ho\u1ea1t cho FTTH\u2014lu\u00f4n s\u1eb5n s\u00e0ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Hi\u1ec7u su\u1ea5t u\u1ed1n cong trong G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/h2>\n\n\n\n<p>U\u1ed1n cong l\u00e0 h\u00e0nh \u0111\u1ed9ng ti\u00eau \u0111\u1ec1 trong <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em>\u2014gi\u1ed1ng nh\u01b0 m\u1ed9t cu\u1ed9c thi v\u1ec1 \u0111\u1ed9 d\u1ebbo dai. \u0110\u00e2y l\u00e0 c\u00e1ch ch\u00fang k\u00e9o gi\u00e3n v\u00e0 u\u1ed1n cong m\u00e0 kh\u00f4ng l\u00e0m \u0111\u1ee9t t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-1.jpg\"><img decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-1.jpg\" alt=\"s\u1ee3i quang 1\" class=\"wp-image-3014\" srcset=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-1.jpg 1000w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-1-300x200.jpg 300w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-1-768x512.jpg 768w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-1-600x400.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption class=\"wp-element-caption\">s\u1ee3i quang<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">U\u1ed1n G652D<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>B\u00e1n k\u00ednh:<\/strong> T\u1ed1i thi\u1ec3u 30 mm\u2014c\u1ee9ng nh\u01b0 v\u00e1n g\u1ed7.<\/li>\n\n\n\n<li><strong>S\u1ef1 m\u1ea5t m\u00e1t:<\/strong> U\u1ed1n ch\u1eb7t h\u01a1n, t\u00edn hi\u1ec7u s\u1ebd b\u1ecb m\u1ea5t \u0111\u1ed9t ng\u1ed9t - 1-2 dB ho\u1eb7c h\u01a1n, l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u nhanh ch\u00f3ng.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> N\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho nh\u1eefng c\u00fa \u0111\u00e1nh th\u1eb3ng\u2014h\u00e3y ngh\u0129 \u0111\u1ebfn \u0111\u01b0\u1eddng cao t\u1ed1c, kh\u00f4ng ph\u1ea3i ng\u00f5 h\u1ebbm. \u0110\u1ea9y n\u00f3 qu\u00e1 xa, v\u00e0 \u00e1nh s\u00e1ng s\u1ebd ph\u00e2n t\u00e1n nh\u01b0 \u0111\u1ed3 u\u1ed1ng b\u1ecb \u0111\u1ed5.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> \u0110\u01b0\u1eddng ch\u1ea1y d\u00e0i, tho\u00e1ng\u2014kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p v\u00e0o g\u00f3c cua g\u1ea5p.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">G657A1 U\u1ed1n<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>B\u00e1n k\u00ednh:<\/strong> 10-15 mm\u2014linh ho\u1ea1t g\u1ea5p \u0111\u00f4i G652D.<\/li>\n\n\n\n<li><strong>S\u1ef1 m\u1ea5t m\u00e1t:<\/strong> Th\u1ea5p \u1edf m\u1ee9c 0,2-0,5 dB cho m\u1ed7i v\u00f2ng quay h\u1eb9p\u2014c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c v\u1eeba ph\u1ea3i.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi l\u1edbp ph\u1ee7 ch\u1ed1ng u\u1ed1n cong, cho ph\u00e9p \u00e1nh s\u00e1ng \u0111i \u0111\u00fang h\u01b0\u1edbng ngay c\u1ea3 khi \u0111i qua c\u00e1c kh\u00fac cua. Ho\u00e0n h\u1ea3o cho h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n \u0111\u00f4 th\u1ecb n\u01a1i \u1ed1ng d\u1eabn xo\u1eafn.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> M\u1ea1ng l\u01b0\u1edbi th\u00e0nh ph\u1ed1, c\u1ea7n ph\u1ea3i u\u1ed1n cong m\u1ed9t ch\u00fat.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">G657A2 U\u1ed1n<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>B\u00e1n k\u00ednh:<\/strong> 7,5 mm\u2014b\u1eb1ng m\u1ed9t n\u1eeda gi\u1edbi h\u1ea1n c\u1ee7a G657A1, s\u1ef1 nhanh nh\u1eb9n nh\u01b0 v\u1eadn \u0111\u1ed9ng vi\u00ean nh\u00e0o l\u1ed9n.<\/li>\n\n\n\n<li><strong>S\u1ef1 m\u1ea5t m\u00e1t:<\/strong> Ch\u1ec9 kho\u1ea3ng 0,1-0,2 dB m\u1ed7i v\u00f2ng\u2014kh\u1ea3 n\u0103ng gi\u1eef t\u00edn hi\u1ec7u g\u1ea7n nh\u01b0 tuy\u1ec7t \u0111\u1ed1i.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> Thi\u1ebft k\u1ebf ti\u00ean ti\u1ebfn gi\u00fap gi\u1eef \u00e1nh s\u00e1ng ch\u1eb7t h\u01a1n, ph\u00e1t huy t\u00e1c d\u1ee5ng \u1edf nh\u1eefng \u0111i\u1ec3m h\u1eb9p nh\u1ea5t\u2014gi\u1ed1ng nh\u01b0 qu\u1ea5n quanh m\u1ed9t c\u00e2y b\u00fat ch\u00ec m\u00e0 kh\u00f4ng ch\u1edbp m\u1eaft.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> Thi\u1ebft l\u1eadp m\u1eadt \u0111\u1ed9 cao, \u0111\u1ed9 cong c\u1ef1c \u0111\u1ea1i.<\/li>\n<\/ul>\n\n\n\n<p>G652D c\u1ee9ng c\u00e1p\u2014G657A1\/A2 u\u1ed1n cong nh\u01b0 chuy\u00ean gia, trong \u0111\u00f3 A2 chi\u1ebfm \u01b0u th\u1ebf.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-patch-cord.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"607\" src=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-patch-cord.jpg\" alt=\"d\u00e2y v\u00e1 s\u1ee3i\" class=\"wp-image-3018\" srcset=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-patch-cord.jpg 1000w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-patch-cord-300x182.jpg 300w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-patch-cord-768x466.jpg 768w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-patch-cord-600x364.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption class=\"wp-element-caption\">d\u00e2y v\u00e1 s\u1ee3i<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">So s\u00e1nh chi ph\u00ed c\u1ee7a G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/h2>\n\n\n\n<p>C\u00e1c <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em> gi\u00e1 c\u1ea3 gi\u1ed1ng nh\u01b0 m\u1ed9t danh s\u00e1ch h\u00e0ng t\u1ea1p h\u00f3a\u2014h\u00e0ng ch\u1ee7 l\u1ef1c th\u00ec r\u1ebb, h\u00e0ng \u0111\u1eb7c s\u1ea3n th\u00ec \u0111\u1eaft h\u01a1n. Sau \u0111\u00e2y l\u00e0 t\u00f3m t\u1eaft:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Chi ph\u00ed G652D<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u1ea1m vi:<\/strong> $0,05-$0,10 tr\u00ean m\u1ed9t m\u00e9t\u2014m\u1ee9c th\u1ea5p nh\u1ea5t trong s\u1ed1 c\u00e1c m\u1ee9c.<\/li>\n\n\n\n<li><strong>T\u1ea1i sao:<\/strong> \u0110\u00e2y l\u00e0 s\u1ee3i quang \u0111\u01a1n mode l\u00e2u \u0111\u1eddi nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t nhi\u1ec1u nh\u1ea5t\u2014s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t gi\u00fap s\u1ee3i quang m\u1ecfng h\u01a1n. Kh\u00f4ng c\u00f3 c\u00f4ng ngh\u1ec7 u\u1ed1n cong l\u1ea1 m\u1eaft n\u00e0o \u1edf \u0111\u00e2y.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> C\u00f3 s\u1eb5n r\u1ed9ng r\u00e3i, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn cho vi\u1ec5n th\u00f4ng\u2014gi\u1ed1ng nh\u01b0 vi\u1ec7c mua g\u1ea1o \u0111\u00f3ng trong bao.<\/li>\n\n\n\n<li><strong>Khi:<\/strong> Chuy\u1ebfn bay \u0111\u01b0\u1eddng d\u00e0i gi\u00e1 r\u1ebb.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">G657A1 Chi ph\u00ed<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u1ea1m vi:<\/strong> $0,08-$0,15 tr\u00ean m\u00e9t\u2014m\u1ee9c t\u0103ng trung b\u00ecnh.<\/li>\n\n\n\n<li><strong>T\u1ea1i sao:<\/strong> \u0110\u1ed9 kh\u00f4ng nh\u1ea1y khi u\u1ed1n cong l\u00e0m t\u0103ng th\u00eam \u0111\u1ed9 ph\u1ee9c t\u1ea1p trong s\u1ea3n xu\u1ea5t\u2014l\u1edbp ph\u1ee7 \u0111\u1eb7c bi\u1ec7t v\u00e0 dung sai ch\u1eb7t ch\u1ebd h\u01a1n l\u00e0m t\u0103ng gi\u00e1.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> Gi\u00e1 cao h\u01a1n G652D nh\u01b0ng th\u1ea5p h\u01a1n A2\u2014gi\u00e1 tr\u1ecb c\u00e2n b\u1eb1ng cho t\u00ednh linh ho\u1ea1t.<\/li>\n\n\n\n<li><strong>Khi:<\/strong> C\u00e1c d\u1ef1 \u00e1n \u0111\u00f4 th\u1ecb c\u1ea7n c\u00f3 s\u1ef1 \u0111i\u1ec1u ch\u1ec9nh m\u00e0 kh\u00f4ng t\u1ed1n k\u00e9m.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">G657A2 Chi ph\u00ed<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u1ea1m vi:<\/strong> $0,10-$0,20 m\u1ed7i m\u00e9t\u2014lo\u1ea1i cao c\u1ea5p.<\/li>\n\n\n\n<li><strong>T\u1ea1i sao:<\/strong> Hi\u1ec7u su\u1ea5t u\u1ed1n c\u1ef1c cao \u0111\u00f2i h\u1ecfi v\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c\u2014h\u00e3y ngh\u0129 \u0111\u1ebfn b\u00e1nh m\u00ec th\u1ee7 c\u00f4ng so v\u1edbi b\u00e1nh m\u00ec mua \u1edf c\u1eeda h\u00e0ng.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> \u0110\u1eaft nh\u1ea5t nh\u01b0ng \u0111\u00e1ng gi\u00e1 cho nhu c\u1ea7u m\u1eadt \u0111\u1ed9 cao, n\u01a1i m\u00e0 m\u1ed7i l\u01b0\u1ee3t \u0111i \u0111\u1ec1u c\u00f3 gi\u00e1 tr\u1ecb.<\/li>\n\n\n\n<li><strong>Khi:<\/strong> FTTH ho\u1eb7c trung t\u00e2m d\u1eef li\u1ec7u d\u00e0y \u0111\u1eb7c.<\/li>\n<\/ul>\n\n\n\n<p>CommMesh cung c\u1ea5p G652D cho m\u1ee5c \u0111\u00edch ti\u1ebft ki\u1ec7m, G657A1 cho m\u1ee5c \u0111\u00edch gi\u00e1 tr\u1ecb, G657A2 cho m\u1ee5c \u0111\u00edch linh ho\u1ea1t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 gh\u00e9p n\u1ed1i trong G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-fusion-splicing.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-fusion-splicing.jpg\" alt=\"N\u1ed1i s\u1ee3i quang\" class=\"wp-image-3013\" srcset=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-fusion-splicing.jpg 1000w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-fusion-splicing-300x200.jpg 300w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-fusion-splicing-768x512.jpg 768w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/Fiber-fusion-splicing-600x400.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption class=\"wp-element-caption\">N\u1ed1i s\u1ee3i quang<\/figcaption><\/figure>\n\n\n\n<p>L\u00e0m sao <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em> h\u1ee3p t\u00e1c\u2014gi\u1ed1ng nh\u01b0 c\u00e1c m\u1ea3nh gh\u00e9p gh\u00e9p l\u1ea1i v\u1edbi nhau\u2014l\u00e0 v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng \u0111\u1ec3 n\u00e2ng c\u1ea5p ho\u1eb7c s\u1eeda ch\u1eefa. Sau \u0111\u00e2y l\u00e0 th\u00f4ng tin chi ti\u1ebft:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a G652D<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> Ho\u00e0n h\u1ea3o v\u1edbi m\u1ea1ng G652 c\u0169\u2014k\u1ebft n\u1ed1i d\u1ec5 d\u00e0ng v\u1edbi nhau.<\/li>\n\n\n\n<li><strong>M\u1ea5t m\u1ed1i n\u1ed1i:<\/strong> 0,02-0,05 dB\u2014m\u1ed1i n\u1ed1i li\u1ec1n m\u1ea1ch, si\u00eau th\u1ea5p.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> \u0110\u00e2y l\u00e0 ti\u00eau chu\u1ea9n m\u00e0 nh\u1eefng ti\u00eau chu\u1ea9n kh\u00e1c \u0111\u1ec1u \u0111\u1ea1t \u0111\u01b0\u1ee3c\u2014ph\u1ed5 bi\u1ebfn trong c\u00e1c m\u1ea1ng l\u01b0\u1edbi vi\u1ec5n th\u00f4ng c\u0169.<\/li>\n\n\n\n<li><strong>N\u1eafm l\u1ea5y:<\/strong> L\u00f5i kh\u00f4ng kh\u1edbp nh\u1eb9 v\u1edbi G657\u2014c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh cho A1\/A2.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a G657A1<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> T\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c v\u1edbi G652D\u2014ITU \u0111\u00e3 thi\u1ebft k\u1ebf theo c\u00e1ch \u0111\u00f3.<\/li>\n\n\n\n<li><strong>M\u1ea5t m\u1ed1i n\u1ed1i:<\/strong> 0,05-0,1 dB v\u1edbi G652D\u2014cao h\u01a1n m\u1ed9t ch\u00fat nh\u01b0ng v\u1eabn kh\u1ea3 thi.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> L\u00f5i \u0111\u1ee7 g\u1ea7n, nh\u01b0ng chi\u1ebft su\u1ea5t l\u1ea1i kh\u00e1c nhau\u2014m\u00e1y gh\u00e9p n\u1ed1i hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 x\u1eed l\u00fd t\u1ed1t.<\/li>\n\n\n\n<li><strong>N\u1eafm l\u1ea5y:<\/strong> C\u1ea7n c\u00f3 s\u1ef1 ch\u00ednh x\u00e1c\u2014l\u00e0m vi\u1ec7c c\u1ea9u th\u1ea3 s\u1ebd m\u1ea5t m\u00e1t.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a G657A2<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> T\u01b0\u01a1ng th\u00edch v\u1edbi G652D v\u00e0 G657A1\u2014c\u1ea7u n\u1ed1i \u0111a n\u0103ng.<\/li>\n\n\n\n<li><strong>M\u1ea5t m\u1ed1i n\u1ed1i:<\/strong> 0,05-0,1 dB\u2014ph\u00f9 h\u1ee3p v\u1edbi m\u1ee9c t\u0103ng nh\u1eb9 c\u1ee7a G657A1.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> U\u1ed1n cong ch\u1eb7t h\u01a1n kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c n\u1ed1i - k\u00edch th\u01b0\u1edbc l\u00f5i v\u1eabn nh\u01b0 v\u1eady, ch\u1ec9 c\u00f3 ph\u1ea7n ru\u1ed9t u\u1ed1n cong h\u01a1n.<\/li>\n\n\n\n<li><strong>N\u1eafm l\u1ea5y:<\/strong> Nh\u1eefng ng\u01b0\u1eddi n\u1ed1i c\u00e1p cao c\u1ea5p t\u1ecfa s\u00e1ng \u1edf \u0111\u00e2y.<\/li>\n<\/ul>\n\n\n\n<p>C\u00e1p G657A1\/A2 c\u1ee7a CommMesh gh\u00e9p n\u1ed1i tr\u01a1n tru v\u1edbi G652D\u2014t\u01b0\u01a1ng lai giao thoa v\u1edbi qu\u00e1 kh\u1ee9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Hi\u1ec7u su\u1ea5t tr\u00ean kho\u1ea3ng c\u00e1ch trong G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/h2>\n\n\n\n<p>Kho\u1ea3ng c\u00e1ch l\u00e0 b\u00e0i ki\u1ec3m tra s\u1ee9c b\u1ec1n cho <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em>\u2014gi\u1ed1ng nh\u01b0 s\u1ee9c b\u1ec1n c\u1ee7a m\u1ed9t v\u1eadn \u0111\u1ed9ng vi\u00ean ch\u1ea1y b\u1ed9. Sau \u0111\u00e2y l\u00e0 c\u00e1ch h\u1ecd l\u00e0m:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kho\u1ea3ng c\u00e1ch G652D<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u1ea1m vi:<\/strong> 40 km+\u2014huy ch\u01b0\u01a1ng v\u00e0ng marathon.<\/li>\n\n\n\n<li><strong>S\u1ef1 suy gi\u1ea3m:<\/strong> 0,2 dB\/km \u1edf 1550 nm\u2014t\u00edn hi\u1ec7u v\u1eabn r\u00f5 n\u00e9t.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> \u0110\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho \u0111\u01b0\u1eddng d\u00e0i\u2014\u0111\u1ed9 ph\u00e2n t\u00e1n th\u1ea5p, t\u1ed5n th\u1ea5t th\u1ea5p. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn c\u1ee7a c\u00e1c c\u00f4ng ty vi\u1ec5n th\u00f4ng l\u1edbn nh\u01b0 AT&amp;T ho\u1eb7c Verizon.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> \u0110\u01b0\u1eddng li\u00ean k\u1ebft xuy\u00ean qu\u1ed1c gia ho\u1eb7c n\u00f4ng th\u00f4n.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Kho\u1ea3ng c\u00e1ch G657A1<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u1ea1m vi:<\/strong> 20-40 km\u2014v\u1eabn m\u1ea1nh, ph\u1ea1m vi nh\u1ecf h\u01a1n.<\/li>\n\n\n\n<li><strong>S\u1ef1 suy gi\u1ea3m:<\/strong> 0,2 dB\/km\u2014b\u1eb1ng v\u1edbi t\u1ed1c \u0111\u1ed9 suy hao c\u1ee7a G652D.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> T\u1eadp trung v\u00e0o kh\u00fac cua kh\u00f4ng \u1ea3nh h\u01b0\u1edfng nhi\u1ec1u \u0111\u1ebfn kho\u1ea3ng c\u00e1ch - tuy\u1ec7t v\u1eddi cho nh\u1eefng chuy\u1ebfn ch\u1ea1y t\u1eeb th\u00e0nh ph\u1ed1 ra v\u00f9ng ngo\u1ea1i \u00f4 v\u1edbi m\u1ed9t s\u1ed1 kh\u00fac cua.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> FTTH \u0111\u00f4 th\u1ecb, tr\u1ea3i d\u00e0i kh\u1eafp khu\u00f4n vi\u00ean tr\u01b0\u1eddng.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Kho\u1ea3ng c\u00e1ch G657A2<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u1ea1m vi:<\/strong> 10-20 km\u2014ng\u1eafn nh\u1ea5t nh\u01b0ng g\u1ea5p.<\/li>\n\n\n\n<li><strong>S\u1ef1 suy gi\u1ea3m:<\/strong> 0,2 dB\/km\u2014m\u1ee9c suy hao th\u1ea5p t\u01b0\u01a1ng t\u1ef1.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> Ph\u1ea1m vi giao d\u1ecbch cho kh\u1ea3 n\u0103ng u\u1ed1n cong\u2014t\u1ed1t nh\u1ea5t \u1edf nh\u1eefng khu v\u1ef1c d\u00e0y \u0111\u1eb7c, kh\u00f4ng ph\u1ea3i nh\u1eefng v\u00f9ng r\u1ed9ng l\u1edbn.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> M\u1ea1ng c\u1ee5c b\u1ed9 c\u00f3 m\u1eadt \u0111\u1ed9 cao.<\/li>\n<\/ul>\n\n\n\n<p>G652D l\u00e0 vua v\u1ec1 kho\u1ea3ng c\u00e1ch\u2014G657A1\/A2 linh ho\u1ea1t h\u01a1n \u1edf g\u1ea7n nh\u00e0.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-cable-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"707\" src=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-cable-1.jpg\" alt=\"c\u00e1p quang 1\" class=\"wp-image-3017\" srcset=\"https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-cable-1.jpg 1000w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-cable-1-300x212.jpg 300w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-cable-1-768x543.jpg 768w, https:\/\/commmesh.com\/wp-content\/uploads\/2025\/03\/fiber-optic-cable-1-600x424.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption class=\"wp-element-caption\">c\u00e1p quang<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">T\u01b0\u01a1ng lai v\u1edbi G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/h2>\n\n\n\n<p>L\u1ef1a ch\u1ecdn <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em> gi\u1ed1ng nh\u01b0 tr\u1ed3ng m\u1ed9t khu v\u01b0\u1eddn\u2014h\u00e3y ngh\u0129 \u0111\u1ebfn nhi\u1ec1u n\u0103m tr\u01b0\u1edbc. \u0110\u00e2y l\u00e0 d\u1ef1 b\u00e1o:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u01b0\u01a1ng lai G652D<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong> \u0110\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh l\u00e0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng d\u00e0i\u2014v\u1eabn quan tr\u1ecdng \u0111\u1ed1i v\u1edbi l\u01b0\u1edbi vi\u1ec5n th\u00f4ng.<\/li>\n\n\n\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> \u0110\u1ed9 cong h\u1ea1n ch\u1ebf \u0111\u1ed9 tr\u1ec5 khi m\u1ea1ng l\u01b0\u1edbi ng\u00e0y c\u00e0ng d\u00e0y \u0111\u1eb7c\u20145G v\u00e0 c\u00e1c th\u00e0nh ph\u1ed1 th\u00f4ng minh c\u1ea7n nhi\u1ec1u h\u01a1n th\u1ebf.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> Ph\u00f9 h\u1ee3p v\u1edbi v\u00f9ng n\u00f4ng th\u00f4n ho\u1eb7c v\u00f9ng truy\u1ec1n th\u1ed1ng, nh\u01b0ng t\u1ed1c \u0111\u1ed9 ph\u00e1t tri\u1ec3n \u0111\u00f4 th\u1ecb l\u1ea1i v\u01b0\u1ee3t xa.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> H\u1ee3p \u0111\u1ed3ng t\u01b0\u01a1ng lai \u1ed5n \u0111\u1ecbnh v\u00e0 \u00edt \u0111\u1eb7c h\u01a1n.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">G657A1 T\u01b0\u01a1ng lai<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong> S\u1eb5n s\u00e0ng cho c\u00e1c th\u00e0nh ph\u1ed1 \u0111ang ph\u00e1t tri\u1ec3n\u2014gi\u1ea3i ph\u00e1p trung gian \u0111a n\u0103ng.<\/li>\n\n\n\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> Kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ef1a ch\u1ecdn ch\u1eb7t ch\u1ebd nh\u1ea5t cho xu h\u01b0\u1edbng si\u00eau d\u00e0y \u0111\u1eb7c\u2014G657A2 v\u01b0\u1ee3t tr\u1ed9i h\u01a1n.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> X\u1eed l\u00fd t\u1ed1t s\u1ef1 b\u00f9ng n\u1ed5 c\u1ee7a FTTH\u2014h\u00e3y ngh\u0129 \u0111\u1ebfn vi\u1ec7c m\u1edf r\u1ed9ng v\u00f9ng ngo\u1ea1i \u00f4 ho\u1eb7c x\u00e2y d\u1ef1ng c\u00e1c t\u00f2a nh\u00e0 trung b\u00ecnh.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> K\u1ebf ho\u1ea1ch t\u0103ng tr\u01b0\u1edfng c\u00e2n b\u1eb1ng.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">G657A2 T\u01b0\u01a1ng lai<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong> Bend master\u2014\u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng cho 5G, IoT, \u0111\u00f4 th\u1ecb h\u00f3a d\u00e0y \u0111\u1eb7c.<\/li>\n\n\n\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> Qu\u00e1 m\u1ee9c c\u1ea7n thi\u1ebft cho nh\u1eefng \u0111\u01b0\u1eddng ch\u1ea1y th\u1eb3ng, th\u01b0a th\u1edbt\u2014chi ph\u00ed ban \u0111\u1ea7u \u0111\u1eaft h\u01a1n.<\/li>\n\n\n\n<li><strong>Chi ti\u1ebft:<\/strong> Ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u m\u1eadt \u0111\u1ed9 cao trong t\u01b0\u01a1ng lai\u2014c\u0103n h\u1ed9, l\u01b0\u1edbi \u0111i\u1ec7n th\u00f4ng minh.<\/li>\n\n\n\n<li><strong>Ph\u00f9 h\u1ee3p:<\/strong> M\u1ea1ng l\u01b0\u1edbi ti\u00ean ti\u1ebfn.<\/li>\n<\/ul>\n\n\n\n<p>G657A2 ch\u00ednh l\u00e0 MVP t\u01b0\u01a1ng lai\u2014CommMesh \u0111\u00e3 kh\u1eb3ng \u0111\u1ecbnh \u0111i\u1ec1u \u0111\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">So s\u00e1nh G657A1 v\u1edbi G657A2 v\u1edbi G652D<\/h2>\n\n\n\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em> b\u1ea3ng h\u01b0\u1edbng d\u1eabn\u2014gi\u1ed1ng nh\u01b0 t\u00f3m t\u1eaft cu\u1ed9c \u0111ua:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Lo\u1ea1i s\u1ee3i<\/th><th>B\u00e1n k\u00ednh u\u1ed1n cong<\/th><th>Kho\u1ea3ng c\u00e1ch<\/th><th>Chi ph\u00ed ($\/m)<\/th><th>T\u1ed1t nh\u1ea5t cho<\/th><\/tr><\/thead><tbody><tr><td>G652D<\/td><td>30mm<\/td><td>40km+<\/td><td>$0.05-0.10<\/td><td>\u0110\u01b0\u1eddng d\u00e0i, vi\u1ec5n th\u00f4ng<\/td><\/tr><tr><td>G657A1<\/td><td>10-15mm<\/td><td>20-40km<\/td><td>$0.08-0.15<\/td><td>FTTH \u0111\u00f4 th\u1ecb, v\u0103n ph\u00f2ng<\/td><\/tr><tr><td>G657A2<\/td><td>7,5mm<\/td><td>10-20km<\/td><td>$0.10-0.20<\/td><td>FTTH d\u00e0y \u0111\u1eb7c, d\u1eef li\u1ec7u<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>L\u1ed9 tr\u00ecnh c\u1ee7a b\u1ea1n\u2014ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u, ph\u1ea1m vi v\u00e0 ng\u00e2n s\u00e1ch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao vi\u1ec7c l\u1ef1a ch\u1ecdn G657A1 so v\u1edbi G657A2 so v\u1edbi G652D l\u1ea1i quan tr\u1ecdng<\/h2>\n\n\n\n<p>Ch\u1ecdn \u0111\u00fang <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em> gi\u1ed1ng nh\u01b0 vi\u1ec7c ch\u1ecdn gi\u00e0y cho m\u1ed9t chuy\u1ebfn \u0111i b\u1ed9 \u0111\u01b0\u1eddng d\u00e0i\u2014m\u1ed9t \u0111\u00f4i gi\u00e0y kh\u00f4ng ph\u00f9 h\u1ee3p, b\u1ea1n s\u1ebd kh\u1eadp khi\u1ec5ng. G652D t\u1ecfa s\u00e1ng tr\u00ean nh\u1eefng con \u0111\u01b0\u1eddng d\u00e0i, th\u1eb3ng nh\u01b0ng l\u1ea1i v\u1ea5p ng\u00e3 \u1edf nh\u1eefng kh\u00fac cua h\u1eb9p trong th\u00e0nh ph\u1ed1. G657A1 d\u1ec5 d\u00e0ng \u0111i\u1ec1u h\u01b0\u1edbng tr\u00ean nh\u1eefng con \u0111\u01b0\u1eddng trong th\u00e0nh ph\u1ed1, trong khi G657A2 chinh ph\u1ee5c nh\u1eefng khu r\u1eebng r\u1eadm r\u1ea1p nh\u1ea5t. M\u1ed9t s\u1ef1 kh\u00f4ng ph\u00f9 h\u1ee3p\u2014gi\u1ed1ng nh\u01b0 G652D trong m\u1ed9t c\u0103n h\u1ed9 ch\u1eadt ch\u1ed9i\u2014c\u00f3 ngh\u0129a l\u00e0 m\u1ea5t t\u00edn hi\u1ec7u ho\u1eb7c l\u00e3ng ph\u00ed c\u00e1c b\u1ea3n s\u1eeda l\u1ed7i; s\u1eed d\u1ee5ng qu\u00e1 m\u1ee9c G657A2 tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng d\u00e2y n\u00f4ng th\u00f4n s\u1ebd t\u1ed1n ti\u1ec1n. L\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn gi\u00fap d\u1eef li\u1ec7u nhanh, ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 m\u1ea1ng c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i trong t\u01b0\u01a1ng lai\u2014<a href=\"https:\/\/www.itu.int\/\" target=\"_blank\" rel=\"noreferrer noopener\">Li\u00ean minh Vi\u1ec5n th\u00f4ng Qu\u1ed1c t\u1ebf<\/a> ti\u00eau chu\u1ea9n ch\u1ee9ng minh \u0111i\u1ec1u \u0111\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">K\u1ebft lu\u1eadn: G657A1 so v\u1edbi G657A2 so v\u1edbi G652D \u0111\u01b0\u1ee3c l\u00e0m r\u00f5<\/h2>\n\n\n\n<p>C\u00e1c <em>G657A1 so v\u1edbi G657A2 so v\u1edbi G652D<\/em> cu\u1ed9c chi\u1ebfn ph\u1ee5 thu\u1ed9c v\u00e0o cu\u1ed9c \u0111ua c\u1ee7a b\u1ea1n\u2014G652D cho c\u00e1c cu\u1ed9c ch\u1ea1y marathon, G657A1 cho c\u00e1c cu\u1ed9c ch\u1ea1y n\u01b0\u1edbc r\u00fat trong th\u00e0nh ph\u1ed1, G657A2 cho c\u00e1c m\u00e0n nh\u00e0o l\u1ed9n ch\u1eb7t ch\u1ebd. CommMesh cung c\u1ea5p c\u1ea3 ba\u2014G652D cho c\u00e1c cu\u1ed9c \u0111ua c\u1ed5 \u0111i\u1ec3n, G657A1\/A2 cho FTTH, giao h\u00e0ng trong 7 ng\u00e0y. Cho d\u00f9 b\u1ea1n \u0111ang th\u00e1o g\u1ee1 <em>Ti\u00eau chu\u1ea9n s\u1ee3i quang<\/em> ho\u1eb7c s\u0103n t\u00ecm s\u1ee3i quang ho\u00e0n h\u1ea3o, h\u00e3y truy c\u1eadp CommMesh \u0111\u1ec3 l\u1ea5y s\u1ee3i c\u1ee7a b\u1ea1n. Gi\u1eef cho m\u1ea1ng c\u1ee7a b\u1ea1n nhanh ch\u00f3ng v\u00e0 th\u00f4ng minh\u2014h\u00e3y ch\u1ecdn ng\u01b0\u1eddi chi\u1ebfn th\u1eafng ngay h\u00f4m nay!<\/p>","protected":false},"excerpt":{"rendered":"<p>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng G657A1 so v\u1edbi G657A2 so v\u1edbi G652D nh\u01b0 m\u1ed9t b\u1ed9 ba v\u1eadn \u0111\u1ed9ng vi\u00ean ch\u1ea1y b\u1ed9 \u0111ang chu\u1ea9n b\u1ecb cho c\u00e1c cu\u1ed9c \u0111ua kh\u00e1c nhau\u2014m\u1ed9t ng\u01b0\u1eddi l\u00e0 nh\u00e0 v\u00f4 \u0111\u1ecbch marathon, m\u1ed9t ng\u01b0\u1eddi kh\u00e1c l\u00e0 v\u1eadn \u0111\u1ed9ng vi\u00ean ch\u1ea1y n\u01b0\u1edbc r\u00fat \u0111ang lu\u1ed3n l\u00e1ch qua c\u00e1c con ph\u1ed1 trong th\u00e0nh ph\u1ed1, v\u00e0 ng\u01b0\u1eddi th\u1ee9 ba l\u00e0 m\u1ed9t v\u1eadn \u0111\u1ed9ng vi\u00ean nh\u00e0o l\u1ed9n \u0111ang l\u1ed9n nh\u00e0o qua c\u00e1c g\u00f3c cua h\u1eb9p. \u0110\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0 c\u00e1c m\u00e3 k\u1ef9 thu\u1eadt; ch\u00fang l\u00e0 c\u00e1c ti\u00eau chu\u1ea9n c\u00e1p quang do Li\u00ean minh Vi\u1ec5n th\u00f4ng Qu\u1ed1c t\u1ebf (ITU) \u0111\u1eb7t ra, x\u00e1c \u0111\u1ecbnh c\u00e1ch s\u1ee3i th\u1ee7y tinh [\u2026]<\/p>","protected":false},"author":1,"featured_media":3000,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Single Mode Fiber Comparison: G657A1 vs G657A2 vs G652D","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[34],"tags":[],"class_list":["post-2996","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\/2996","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=2996"}],"version-history":[{"count":12,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts\/2996\/revisions"}],"predecessor-version":[{"id":3021,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts\/2996\/revisions\/3021"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/media\/3000"}],"wp:attachment":[{"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/media?parent=2996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/categories?post=2996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/tags?post=2996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}