{"id":5073,"date":"2025-09-13T00:00:00","date_gmt":"2025-09-13T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/dp-qpsk-dual-polarization-qpsk-explained-and-its-uses\/"},"modified":"2026-06-22T07:19:17","modified_gmt":"2026-06-22T07:19:17","slug":"dp-qpsk-dual-polarization-qpsk-explained-and-its-uses","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/dp-qpsk-dual-polarization-qpsk-explained-and-its-uses","title":{"rendered":"L\u00e0m r\u00f5 k\u1ef9 thu\u1eadt QPSK ph\u00e2n c\u1ef1c k\u00e9p (DP-QPSK): \u0110\u1ed9ng c\u01a1 c\u1ee7a c\u00e1c m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao hi\u1ec7n \u0111\u1ea1i"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1312\" height=\"736\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/dc9d35daf1384ea58ac7fd19009c80cd.webp\" alt=\"What Is Dual-Polarization QPSK and Why Is It Used\" class=\"wp-image-5070\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/dc9d35daf1384ea58ac7fd19009c80cd.webp 1312w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/dc9d35daf1384ea58ac7fd19009c80cd-300x168.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/dc9d35daf1384ea58ac7fd19009c80cd-1024x574.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/dc9d35daf1384ea58ac7fd19009c80cd-768x431.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/dc9d35daf1384ea58ac7fd19009c80cd-18x10.webp 18w\" sizes=\"(max-width: 1312px) 100vw, 1312px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u00e0nh tr\u00ecnh kh\u00f4ng ng\u1eebng ngh\u1ec9 nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u nhanh h\u01a1n v\u00e0 b\u0103ng th\u00f4ng l\u1edbn h\u01a1n, ng\u00e0nh vi\u1ec5n th\u00f4ng quang h\u1ecdc li\u00ean t\u1ee5c \u0111\u1ed5i m\u1edbi. Khi k\u1ef9 thu\u1eadt kh\u00f3a b\u1eadt-t\u1eaft \u0111\u01a1n gi\u1ea3n (OOK) ch\u1ea1m \u0111\u1ebfn gi\u1edbi h\u1ea1n c\u1ee7a n\u00f3, c\u00e1c \u0111\u1ecbnh d\u1ea1ng \u0111i\u1ec1u ch\u1ebf tinh vi h\u01a1n \u0111\u00e3 xu\u1ea5t hi\u1ec7n. Trong s\u1ed1 \u0111\u00f3, <strong>\u0110i\u1ec1u ch\u1ebf pha vu\u00f4ng g\u00f3c ph\u00e2n c\u1ef1c k\u00e9p (DP-QPSK)<\/strong> l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng cho c\u00e1c m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao hi\u1ec7n \u0111\u1ea1i, t\u1eeb <strong>kho\u1ea3ng c\u00e1ch xa<\/strong> truy\u1ec1n d\u1eabn \u0111\u1ebfn <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/data-center-interconnect-definition-benefits-and-role-of-optical-modules\/\"><strong>k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI)<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i vi\u1ebft n\u00e0y ph\u00e2n t\u00edch chi ti\u1ebft <strong>DP-QPSK l\u00e0 g\u00ec,<\/strong>, t\u1ea1i sao n\u00f3 l\u1ea1i quan tr\u1ecdng \u0111\u1ebfn v\u1eady, v\u00e0 c\u00e1ch th\u1ee9c n\u00f3 v\u1eadn h\u00e0nh c\u00e1c \u0111\u1ed9ng c\u01a1 quang trong m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2726 DP-QPSK l\u00e0 g\u00ec? Tr\u01b0\u1edbc ti\u00ean, h\u00e3y gi\u1ea3i m\u00e3 t\u00ean g\u1ecdi<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 hi\u1ec3u DP-QPSK, c\u00e1ch t\u1ed1t nh\u1ea5t l\u00e0 chia c\u1ee5m t\u1eeb vi\u1ebft t\u1eaft th\u00e0nh t\u1eebng ph\u1ea7n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-you-should-know-about-qpsk-modulation-basics-advantages\/\"><strong>QPSK (\u0110i\u1ec1u ch\u1ebf pha vu\u00f4ng g\u00f3c)<\/strong><\/a>: M\u1ed9t s\u01a1 \u0111\u1ed3 \u0111i\u1ec1u ch\u1ebf trong \u0111\u00f3 th\u00f4ng tin \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a v\u00e0o <em>pha<\/em> c\u1ee7a s\u00f3ng \u00e1nh s\u00e1ng. M\u1ed9t k\u00fd hi\u1ec7u QPSK c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i \u1edf m\u1ed9t trong b\u1ed1n pha (45\u00b0, 135\u00b0, 225\u00b0, 315\u00b0), bi\u1ec3u th\u1ecb hai bit d\u1eef li\u1ec7u (<code>00<\/code>, <code>01<\/code>, <code>11<\/code>, <code>10<\/code>). Vi\u1ec7c n\u00e0y <strong>t\u0103ng g\u1ea5p \u0111\u00f4i dung l\u01b0\u1ee3ng d\u1eef li\u1ec7u<\/strong> so v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 ch\u1ec9 truy\u1ec1n m\u1ed9t bit tr\u00ean m\u1ed7i k\u00fd hi\u1ec7u.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Ph\u00e2n c\u1ef1c k\u00e9p (DP)<\/strong>: \u0110\u00e2y l\u00e0 ph\u1ea7n th\u00f4ng minh. \u00c1nh s\u00e1ng l\u00e0 m\u1ed9t s\u00f3ng \u0111i\u1ec7n t\u1eeb c\u00f3 \u0111\u1eb7c t\u00ednh g\u1ecdi l\u00e0 ph\u00e2n c\u1ef1c (h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng nh\u01b0 h\u01b0\u1edbng dao \u0111\u1ed9ng c\u1ee7a s\u00f3ng). DP-QPSK s\u1eed d\u1ee5ng <em>hai<\/em> tr\u1ea1ng th\u00e1i ph\u00e2n c\u1ef1c tr\u1ef1c giao (th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 X v\u00e0 Y) \u0111\u1ec3 truy\u1ec1n <strong>hai t\u00edn hi\u1ec7u QPSK \u0111\u1ed9c l\u1eadp<\/strong> <em>\u0111\u1ed3ng th\u1eddi<\/em> tr\u00ean c\u00f9ng m\u1ed9t b\u01b0\u1edbc s\u00f3ng. Nh\u01b0 v\u1eady, dung l\u01b0\u1ee3ng th\u1ef1c t\u1ebf <strong>l\u1ea1i \u0111\u01b0\u1ee3c nh\u00e2n \u0111\u00f4i th\u00eam m\u1ed9t l\u1ea7n n\u1eefa.<\/strong>.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c k\u1ef9 thu\u1eadt n\u00e0y, DP-QPSK truy\u1ec1n <strong>b\u1ed1n bit tr\u00ean m\u1ed7i k\u00fd hi\u1ec7u,<\/strong>, gi\u00fap n\u00f3 \u0111\u1ea1t hi\u1ec7u su\u1ea5t ph\u1ed5 c\u1ef1c k\u1ef3 cao.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2726 V\u00ec sao DP-QPSK l\u00e0 m\u1ed9t b\u01b0\u1edbc \u0111\u1ed9t ph\u00e1? Nh\u1eefng \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1312\" height=\"736\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/372dd3c4a9c2451a98a35a356d215017.webp\" alt=\"Dual-Polarization QPSK\" class=\"wp-image-5071\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/372dd3c4a9c2451a98a35a356d215017.webp 1312w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/372dd3c4a9c2451a98a35a356d215017-300x168.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/372dd3c4a9c2451a98a35a356d215017-1024x574.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/372dd3c4a9c2451a98a35a356d215017-768x431.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/372dd3c4a9c2451a98a35a356d215017-18x10.webp 18w\" sizes=\"(max-width: 1312px) 100vw, 1312px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c \u00e1p d\u1ee5ng <strong>K\u1ef9 thu\u1eadt \u0111i\u1ec1u ch\u1ebf QPSK ph\u00e2n c\u1ef1c k\u00e9p (DP-QPSK)<\/strong>, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00f9ng v\u1edbi <strong>ph\u00e1t hi\u1ec7n coherent<\/strong>, \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a l\u0129nh v\u1ef1c m\u1ea1ng quang h\u1ecdc. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 l\u00fd do:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>L\u1ee3i \u00edch<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u1ee8ng d\u1ee5ng<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Hi\u1ec7u su\u1ea5t ph\u1ed5 cao<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Truy\u1ec1n nhi\u1ec1u d\u1eef li\u1ec7u h\u01a1n (bit) tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb b\u0103ng th\u00f4ng (Hz). \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t v\u00ec ph\u1ed5 l\u00e0 t\u00e0i nguy\u00ean h\u1eefu h\u1ea1n.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cho ph\u00e9p \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 100G tr\u1edf l\u00ean tr\u00ean m\u1ed9t b\u01b0\u1edbc s\u00f3ng duy nh\u1ea5t trong l\u01b0\u1edbi k\u00eanh ti\u00eau chu\u1ea9n 50 GHz.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng suy hao v\u01b0\u1ee3t tr\u1ed9i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c b\u1ed9 thu DP-QPSK \u0111\u1ed3ng pha s\u1eed d\u1ee5ng x\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/digital-signal-processor-functionality-in-optical-transceivers\/\"><strong>(X\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1)<\/strong><\/a> \u0111\u1ec3 b\u00f9 tr\u1eeb ch\u1ee7 \u0111\u1ed9ng c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng t\u00e1n s\u1eafc s\u1eafc m\u00e0u (CD) v\u00e0 t\u00e1n s\u1eafc ch\u1ebf \u0111\u1ed9 ph\u00e2n c\u1ef1c (PMD).<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i b\u1ecf nhu c\u1ea7u v\u1ec1 c\u00e1c m\u00f4-\u0111un b\u00f9 t\u00e1n s\u1eafc chuy\u00ean d\u1ee5ng, \u0111\u1eaft \u0111\u1ecf trong \u0111o\u1ea1n c\u00e1p s\u1ee3i quang.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ed9 dung n\u1ea1p<\/strong> t\u1ef7 s\u1ed1 t\u00edn hi\u1ec7u tr\u00ean nhi\u1ec5u quang (OSNR)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>cho ph\u00e9p t\u00edn hi\u1ec7u truy\u1ec1n \u0111i xa h\u01a1n tr\u01b0\u1edbc khi c\u1ea7n t\u00e1i t\u1ea1o, ngay c\u1ea3 khi c\u00f3 nhi\u1ec5u.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00e0 c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng cho <strong>kho\u1ea3ng c\u00e1ch xa<\/strong> and <strong>h\u1ec7 th\u1ed1ng c\u00e1p quang bi\u1ec3n<\/strong> .<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u00f3ng vai tr\u00f2 kh\u1ed1i x\u00e2y d\u1ef1ng cho c\u00e1c \u0111\u1ecbnh d\u1ea1ng b\u1eadc cao h\u01a1n nh\u01b0 DP-16QAM (d\u00e0nh cho 200G\/400G).<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u1ea3o v\u1ec7 \u0111\u1ea7u t\u01b0 m\u1ea1ng cho t\u01b0\u01a1ng lai v\u00e0 h\u1ed7 tr\u1ee3 n\u00e2ng c\u1ea5p m\u01b0\u1ee3t m\u00e0.<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2726 DP-QPSK \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng \u1edf \u0111\u00e2u? C\u00e1c \u1ee9ng d\u1ee5ng c\u1ed1t l\u00f5i<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n s\u1ebd kh\u00f4ng t\u00ecm th\u1ea5y DP-QPSK trong b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn gia \u0111\u00ecnh, nh\u01b0ng n\u00f3 \u0111ang ho\u1ea1t \u0111\u1ed9ng m\u1ea1nh m\u1ebd \u1edf l\u00f5i c\u1ee7a Internet:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>Truy\u1ec1n d\u1eabn quang \u0111\u1ed3ng pha 100G\/200G<\/strong>: \u0110\u00e2y l\u00e0 l\u0129nh v\u1ef1c \u1ee9ng d\u1ee5ng ch\u00ednh. DP-QPSK l\u00e0 \u0111\u1ecbnh d\u1ea1ng \u0111i\u1ec1u ch\u1ebf ti\u00eau chu\u1ea9n cho c\u00e1c m\u1ea1ng \u0111\u01b0\u1eddng d\u00e0i v\u00e0 \u0111\u00f4 th\u1ecb 100G, v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng cho 200G trong c\u00e1c t\u00ecnh hu\u1ed1ng y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch xa h\u01a1n.<\/p><\/li><li><p style=\"margin: 0px;\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/data-center-interconnect-definition-benefits-and-role-of-optical-modules\/\"><strong>Li\u00ean k\u1ebft n\u1ed9i b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u (DCI)<\/strong><\/a>: \u0110\u1ec3 k\u1ebft n\u1ed1i c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u \u1edf kho\u1ea3ng c\u00e1ch v\u00e0i ch\u1ee5c ho\u1eb7c h\u00e0ng tr\u0103m kil\u00f4m\u00e9t, <strong>m\u00f4-\u0111un quang h\u1ecdc nh\u1ea5t qu\u00e1n t\u1ed1c \u0111\u1ed9 cao<\/strong> vi\u1ec7c s\u1eed d\u1ee5ng DP-QPSK mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng ho\u00e0n h\u1ea3o gi\u1eefa t\u1ea7m xa, dung l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>C\u00e1p quang bi\u1ec3n<\/strong>: Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec5u v\u00e0 suy hao tuy\u1ec7t v\u1eddi khi\u1ebfn n\u00f3 tr\u1edf n\u00ean thi\u1ebft y\u1ebfu trong vi\u1ec7c v\u01b0\u1ee3t qua c\u00e1c \u0111\u1ea1i d\u01b0\u01a1ng v\u1edbi dung l\u01b0\u1ee3ng d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3.<\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2726 Th\u00fac \u0111\u1ea9y m\u1ea1ng l\u01b0\u1edbi b\u1eb1ng \u0111\u1ed5i m\u1edbi quang h\u1ecdc LINK-PP<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/39a2c95874c24645be043d9e62a2e807.webp\" alt=\"Coherent Transceivers\" class=\"wp-image-5072\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/39a2c95874c24645be043d9e62a2e807.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/39a2c95874c24645be043d9e62a2e807-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/39a2c95874c24645be043d9e62a2e807-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/39a2c95874c24645be043d9e62a2e807-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/39a2c95874c24645be043d9e62a2e807-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c tri\u1ec3n khai <strong>K\u1ef9 thu\u1eadt \u0111i\u1ec1u ch\u1ebf QPSK ph\u00e2n c\u1ef1c k\u00e9p (DP-QPSK)<\/strong> \u0111\u00f2i h\u1ecfi ph\u1ea7n c\u1ee9ng t\u00edch h\u1ee3p cao v\u00e0 tinh vi. \u0110\u00e2y l\u00e0 n\u01a1i c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t b\u1ed9 thu ph\u00e1t quang ti\u00ean ti\u1ebfn nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/page\/aboutus.htm\"><strong>LINK-PP<\/strong><\/a> t\u1ecfa s\u00e1ng. C\u00e1c s\u1ea3n ph\u1ea9m <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/coherent-transceivers-high-speed-data-transmission-explained\/\"><strong>m\u00f4-\u0111un quang h\u1ecdc nh\u1ea5t qu\u00e1n t\u1ed1c \u0111\u1ed9 cao<\/strong><\/a> c\u1ee7a LINK-PP \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 khai th\u00e1c t\u1ed1i \u0111a ti\u1ec1m n\u0103ng c\u1ee7a c\u00f4ng ngh\u1ec7 n\u00e0y, cung c\u1ea5p cho c\u00e1c nh\u00e0 khai th\u00e1c m\u1ea1ng c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t v\u00ed d\u1ee5 ti\u00eau bi\u1ec3u l\u00e0 <strong>LINK-PP<\/strong> M\u00f4-\u0111un thu ph\u00e1t quang \u0111\u1ed3ng pha CFP2. M\u00f4-\u0111un n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng 100G\/200G, t\u1eadn d\u1ee5ng \u0111i\u1ec1u ch\u1ebf DP-QPSK \u0111\u1ec3 mang l\u1ea1i hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i cho <strong>truy\u1ec1n d\u1eabn d\u00e0i<\/strong> and <strong>m\u1ea1ng \u0111\u00f4 th\u1ecb<\/strong> n\u00e2ng c\u1ea5p. N\u00f3 \u0111\u01b0\u1ee3c trang b\u1ecb DSP t\u00edch h\u1ee3p m\u1ea1nh m\u1ebd \u0111\u1ec3 x\u1eed l\u00fd b\u00f9 tr\u1eeb c\u00e1c suy hao ph\u1ee9c t\u1ea1p, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a thi\u1ebft k\u1ebf m\u1ea1ng v\u00e0 gi\u1ea3m chi ph\u00ed v\u1eadn h\u00e0nh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai \u0111ang t\u00ecm ki\u1ebfm <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26045-400g-qsfp-dd-osfp-qsfp112.htm\"><strong>C\u00e1c c\u00f4ng ty nh\u01b0<\/strong><\/a> ho\u1eb7c l\u1eadp k\u1ebf ho\u1ea1ch cho <strong>chi\u1ebfn l\u01b0\u1ee3c quang h\u1ecdc \u0111\u1ed3ng pha,<\/strong>, vi\u1ec7c hi\u1ec3u r\u00f5 vai tr\u00f2 c\u1ee7a DP-QPSK v\u00e0 h\u1ee3p t\u00e1c c\u00f9ng m\u1ed9t nh\u00e0 l\u00e3nh \u0111\u1ea1o c\u00f4ng ngh\u1ec7 nh\u01b0 <strong>LINK-PP<\/strong> l\u00e0 b\u01b0\u1edbc \u0111i then ch\u1ed1t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2726 K\u1ebft lu\u1eadn: N\u1ec1n t\u1ea3ng cho m\u1ed9t t\u01b0\u01a1ng lai nhanh h\u01a1n<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"qc-p1-tag\" style=\"color: rgb(15, 17, 21);\"><strong>\u0110i\u1ec1u ch\u1ebf pha vu\u00f4ng g\u00f3c ph\u00e2n c\u1ef1c k\u00e9p (DP-QPSK)<\/strong> kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t c\u1ee5m t\u1eeb vi\u1ebft t\u1eaft ph\u1ee9c t\u1ea1p; m\u00e0 c\u00f2n l\u00e0 \u0111\u1ecbnh d\u1ea1ng \u0111i\u1ec1u ch\u1ebf ch\u1ee7 l\u1ef1c \u0111\u00e3 l\u00e0m n\u00ean k\u1ef7 nguy\u00ean 100G tr\u1edf l\u00ean. B\u1eb1ng c\u00e1ch kh\u00e9o l\u00e9o \u0111i\u1ec1u khi\u1ec3n c\u1ea3 pha v\u00e0 ph\u00e2n c\u1ef1c c\u1ee7a \u00e1nh s\u00e1ng, DP-QPSK mang l\u1ea1i hi\u1ec7u su\u1ea5t ph\u1ed5, t\u1ea7m xa v\u00e0 \u0111\u1ed9 b\u1ec1n m\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng to\u00e0n c\u1ea7u hi\u1ec7n \u0111\u1ea1i \u0111\u00f2i h\u1ecfi. Khi ch\u00fang ta ti\u1ebfn t\u1edbi 800G v\u00e0 1,6T, nh\u1eefng nguy\u00ean l\u00fd do DP-QPSK kh\u1edfi x\u01b0\u1edbng s\u1ebd ti\u1ebfp t\u1ee5c l\u00e0m n\u1ec1n t\u1ea3ng cho <\/span><span class=\"qc-p1-tag\"><strong>t\u01b0\u01a1ng lai c\u1ee7a m\u1ea1ng quang h\u1ecdc<\/strong><\/span><span class=\"qc-p1-tag\" style=\"color: rgb(15, 17, 21);\">.<\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\ude80 S\u1eb5n s\u00e0ng n\u00e2ng c\u1ea5p m\u1ea1ng quang h\u1ecdc c\u1ee7a b\u1ea1n?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eadn d\u1ee5ng s\u1ee9c m\u1ea1nh c\u1ee7a c\u00f4ng ngh\u1ec7 \u0111\u1ed3ng pha v\u00e0 DP-QPSK c\u00f9ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a>\u2018c\u00e1c gi\u1ea3i ph\u00e1p quang h\u1ecdc h\u00e0ng \u0111\u1ea7u c\u1ee7a. <strong>Kh\u00e1m ph\u00e1 lo\u1ea1t b\u1ed9 thu ph\u00e1t quang \u0111\u1ed3ng pha hi\u1ec7u su\u1ea5t cao 100G v\u00e0 200G c\u1ee7a ch\u00fang t\u00f4i<\/strong> \u0111\u1ec3 t\u00ecm gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p nh\u1ea5t cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u01b0\u1eddng d\u00e0i, \u0111\u00f4 th\u1ecb ho\u1eb7c <strong>trung t\u00e2m d\u1eef li\u1ec7u<\/strong> c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ch\u1ea5t l\u01b0\u1ee3ng cao, t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u00e1ng tin c\u1eady cho c\u1ea3 \u1ee9ng d\u1ee5ng Ethernet v\u00e0 OTN. <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/support.htm\"><strong>Li\u00ean h\u1ec7 ngay v\u1edbi chuy\u00ean gia c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n!<\/strong><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2726 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >DP-QPSK kh\u00e1c bi\u1ec7t th\u1ebf n\u00e0o so v\u1edbi QPSK th\u00f4ng th\u01b0\u1eddng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DP-QPSK s\u1eed d\u1ee5ng hai ph\u00e2n c\u1ef1c thay v\u00ec m\u1ed9t. B\u1ea1n c\u00f3 th\u1ec3 g\u1eedi l\u01b0\u1ee3ng d\u1eef li\u1ec7u g\u1ea5p \u0111\u00f4i trong c\u00f9ng m\u1ed9t k\u00eanh. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y gi\u00fap b\u1ea1n \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 cao h\u01a1n m\u00e0 kh\u00f4ng c\u1ea7n m\u1edf r\u1ed9ng b\u0103ng th\u00f4ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u1ea7n thi\u1ebft b\u1ecb n\u00e0o \u0111\u1ec3 tri\u1ec3n khai DP-QPSK?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u1ea7n c\u00e1c b\u1ed9 ph\u00e1t v\u00e0 b\u1ed9 thu \u0111\u1eb7c bi\u1ec7t c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd hai ph\u00e2n c\u1ef1c. B\u1ed9 x\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 (DSP) gi\u00fap t\u00e1ch v\u00e0 gi\u1ea3i m\u00e3 c\u00e1c t\u00edn hi\u1ec7u. C\u00e1c thi\u1ebft b\u1ecb n\u00e0y gi\u1eef cho d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n r\u00f5 r\u00e0ng v\u00e0 \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0o m\u00e0 DP-QPSK c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft trong m\u1ea1ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DP-QPSK gi\u00fap b\u1ea1n truy\u1ec1n nhi\u1ec1u d\u1eef li\u1ec7u h\u01a1n tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i. B\u1ea1n c\u00f3 th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c suy hao t\u00edn hi\u1ec7u v\u00e0 duy tr\u00ec k\u1ebft n\u1ed1i \u1ed5n \u0111\u1ecbnh. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ho\u1ea1t \u0111\u1ed9ng t\u1ed1t tr\u00ean c\u00e1c m\u1ea1ng b\u1eadn r\u1ed9n c\u0169ng nh\u01b0 c\u00e1c li\u00ean k\u1ebft \u0111\u01b0\u1eddng d\u00e0i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c \u1ee9ng d\u1ee5ng ch\u00ednh c\u1ee7a DP-QPSK ng\u00e0y nay l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n s\u1ebd t\u00ecm th\u1ea5y DP-QPSK trong c\u00e1c h\u1ec7 th\u1ed1ng s\u1ee3i quang, x\u01b0\u01a1ng s\u1ed1ng internet t\u1ed1c \u0111\u1ed9 cao v\u00e0 c\u00e1c li\u00ean k\u1ebft v\u1ec7 tinh. Nhi\u1ec1u c\u00f4ng ty s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u n\u0103ng m\u1ea1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea1n n\u00ean c\u00e2n nh\u1eafc nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng DP-QPSK?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n n\u00ean ki\u1ec3m tra xem m\u1ea1ng c\u1ee7a m\u00ecnh c\u00f3 h\u1ed7 tr\u1ee3 thi\u1ebft b\u1ecb ti\u00ean ti\u1ebfn hay kh\u00f4ng. DP-QPSK c\u00f3 chi ph\u00ed cao h\u01a1n v\u00e0 \u0111\u00f2i h\u1ecfi nh\u00e2n l\u1ef1c c\u00f3 tay ngh\u1ec1 cao. H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n c\u00f3 \u0111\u00fang c\u00f4ng c\u1ee5 v\u00e0 \u0111\u00e0o t\u1ea1o ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/p>","protected":false},"excerpt":{"rendered":"<p>DP-QPSK (QPSK ph\u00e2n c\u1ef1c k\u00e9p) nh\u00e2n \u0111\u00f4i t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng hai ph\u00e2n c\u1ef1c, t\u1eeb \u0111\u00f3 n\u00e2ng cao hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng b\u0103ng th\u00f4ng cho c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng s\u1ee3i quang v\u00e0 v\u1ec7 tinh.<\/p>","protected":false},"author":1,"featured_media":5070,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-5073","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5073","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=5073"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5073\/revisions"}],"predecessor-version":[{"id":11137,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5073\/revisions\/11137"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/5070"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=5073"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=5073"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=5073"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}