{"id":18356,"date":"2025-02-22T07:58:40","date_gmt":"2025-02-22T07:58:40","guid":{"rendered":"https:\/\/dekam-fiber.com\/?p=18356"},"modified":"2025-07-15T03:42:09","modified_gmt":"2025-07-15T03:42:09","slug":"multimode-fibre-types-om1-vs-om2-vs-om3-vs-om4-vs-om5","status":"publish","type":"post","link":"https:\/\/dekam-fiber.com\/vi\/multimode-fibre-types-om1-vs-om2-vs-om3-vs-om4-vs-om5\/","title":{"rendered":"C\u00e1c lo\u1ea1i s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9: OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5"},"content":{"rendered":"<p>B\u1ea1n c\u00f3 mu\u1ed1n bi\u1ebft b\u00ed m\u1eadt \u0111\u1eb1ng sau vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao qua c\u00e1c v\u0103n ph\u00f2ng, trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng c\u00f4ng nghi\u1ec7p kh\u00f4ng? V\u00e2ng! <a href=\"https:\/\/dekam-fiber.com\/vi\/single-mode-vs-multimode-fiber\/\" target=\"_blank\" rel=\"noreferrer noopener\">S\u1ee3i \u0111a mode<\/a> l\u00e0 nh\u1eefng anh h\u00f9ng \u1ea9n m\u00ecnh \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i li\u1ec1n m\u1ea1ch trong c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau. H\u01a1n n\u1eefa, c\u00f4ng ngh\u1ec7 c\u00e1p quang \u0111\u00e3 \u0111\u01b0\u1ee3c n\u00e2ng c\u1ea5p t\u1eeb OM1 l\u00ean OM5 \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u ph\u00e1t tri\u1ec3n m\u1edbi v\u1ec1 b\u0103ng th\u00f4ng v\u00e0 t\u1ed1c \u0111\u1ed9, m\u1ed7i lo\u1ea1i \u0111\u1ec1u c\u00f3 nh\u1eefng l\u1ee3i th\u1ebf v\u1ec1 hi\u1ec7u su\u1ea5t \u0111\u1ed9c \u0111\u00e1o.&nbsp;<\/p>\n\n\n\n<p>\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao m\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c vi\u1ebft blog n\u00e0y l\u00e0 \u0111\u1ec3 gi\u00fap b\u1ea1n nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c c\u00e1c lo\u1ea1i s\u1ee3i \u0111a ch\u1ebf \u0111\u1ed9 n\u00e0y v\u00e0 nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh c\u1ee7a ch\u00fang. Do \u0111\u00f3, b\u1eb1ng c\u00e1ch ch\u1ecdn lo\u1ea1i ph\u00f9 h\u1ee3p, b\u1ea1n c\u00f3 th\u1ec3 n\u00e2ng c\u1ea5p h\u1ec7 th\u1ed1ng c\u0169 c\u1ee7a m\u00ecnh ho\u1eb7c chu\u1ea9n b\u1ecb ch\u00fang cho c\u1ea3 m\u1ea1ng 400G.<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"700\" height=\"305\" src=\"https:\/\/dekam-fiber.com\/wp-content\/uploads\/2025\/02\/OM1.jpg\" alt=\"OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5\" class=\"wp-image-18372\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><em>1) C\u00e1i g\u00ec l\u00e0 m\u1ed9t <\/em><\/strong><strong><em>C\u00e1p quang \u0111a mode<\/em><\/strong><strong><em>?<\/em><\/strong><\/h2>\n\n\n\n<p>\u201cS\u1ee3i \u0111a ch\u1ebf \u0111\u1ed9 l\u00e0 m\u1ed9t <a href=\"https:\/\/dekam-fiber.com\/vi\/fiber-optic-cable-types\/\" target=\"_blank\" rel=\"noreferrer noopener\">lo\u1ea1i c\u00e1p quang<\/a> cho ph\u00e9p truy\u1ec1n nhi\u1ec1u t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng (LED ho\u1eb7c VSSEL) trong m\u1ed9t l\u00f5i c\u00f9ng m\u1ed9t l\u00fac.\u201d&nbsp;<\/p>\n\n\n\n<p>Kh\u00f4ng gi\u1ed1ng nh\u01b0 s\u1ee3i quang \u0111\u01a1n mode (l\u00fd t\u01b0\u1edfng cho kho\u1ea3ng c\u00e1ch xa), s\u1ee3i quang \u0111a mode c\u00f3 th\u1ec3 truy\u1ec1n t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng \u0111\u1ebfn kho\u1ea3ng c\u00e1ch ng\u1eafn. L\u00fd do l\u00e0 v\u00ec n\u00f3 c\u00f3 l\u00f5i l\u1edbn h\u01a1n (ph\u1ea7n c\u00e1p ti\u1ebfp nh\u1eadn \u00e1nh s\u00e1ng) c\u00f3 \u0111\u01b0\u1eddng k\u00ednh kho\u1ea3ng 50\u00b5m ho\u1eb7c 62,5\u00b5m. Do \u0111\u00f3, l\u00f5i l\u1edbn n\u00e0y cho ph\u00e9p nhi\u1ec1u t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng truy\u1ec1n \u0111i c\u00f9ng m\u1ed9t l\u00fac. Tuy nhi\u00ean, c\u0169ng c\u00f3 m\u1ed9t th\u00e1ch th\u1ee9c m\u00e0 ch\u00fang ph\u1ea3i tr\u1ea3i qua. V\u00ed d\u1ee5, c\u00e1c t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng kh\u00e1c nhau s\u1ebd \u0111\u1ebfn v\u00e0o c\u00e1c th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau, do \u0111\u00f3, hi\u1ec7n t\u01b0\u1ee3ng m\u00e9o t\u00edn hi\u1ec7u l\u1edbn x\u1ea3y ra tr\u00ean m\u1ed9t kho\u1ea3ng c\u00e1ch l\u1edbn.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXcAJX3qsS0fZrgBe1SNULbpZ7h0hHB16r7ZauFumQH53aOId3IMwATxUBNdwTddB_7T9pPpbdqAJPKW3FM0O5zHy_X59FyfS26v0EPB0_BD4WIqYzn_0R4Ky4mURuKSMwvdFsba-Q?key=FtmL80JLpKUdw5maBCauermw\" alt=\"C\u00e1p quang \u0111a mode\"\/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><em>T\u1ea1i sao b\u1ea1n n\u00ean s\u1eed d\u1ee5ng c\u00e1p quang \u0111a ch\u1ebf \u0111\u1ed9?<\/em><\/strong><\/li>\n<\/ul>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u ti\u1ec1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9. \u0110i\u1ec1u n\u00e0y l\u00e0 do s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c ngu\u1ed3n s\u00e1ng VCSEL v\u00e0 LED gi\u00e1 r\u1ebb. N\u00f3 c\u0169ng d\u1ec5 l\u1eafp \u0111\u1eb7t h\u01a1n v\u00ec s\u1ee3i quang y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 c\u0103n ch\u1ec9nh th\u1ea5p h\u01a1n, gi\u00fap gi\u1ea3m thi\u1ec3u nhu c\u1ea7u b\u1ea3o tr\u00ec v\u00e0 ph\u1ee9c t\u1ea1p.&nbsp;<\/p>\n\n\n\n<p>Ngo\u00e0i ra, s\u1ee3i \u0111a ch\u1ebf \u0111\u1ed9 h\u1ed7 tr\u1ee3 truy\u1ec1n d\u1eef li\u1ec7u c\u1ef1 ly ng\u1eafn \u1edf t\u1ed1c \u0111\u1ed9 cao v\u00ec ch\u00fang h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i 10G, 40G v\u00e0 100G. N\u1ebfu kh\u00f4ng c\u1ea7n truy\u1ec1n d\u1eef li\u1ec7u c\u1ef1 ly d\u00e0i cho m\u1ea1ng n\u1ed9i b\u1ed9, s\u1ee3i \u0111a ch\u1ebf \u0111\u1ed9 l\u00e0 l\u1ef1a ch\u1ecdn hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed v\u00e0 m\u1ea1nh m\u1ebd nh\u1ea5t.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><em>2) Hi\u1ec3u v\u1ec1 ph\u00e2n lo\u1ea1i s\u1ee3i OM<\/em><\/strong><\/h2>\n\n\n\n<p>OM (Optical Multimode) v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 h\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i cho s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 v\u00e0 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp theo ti\u00eau chu\u1ea9n ISO\/IEC 11801. H\u00e3y nh\u1edb r\u1eb1ng c\u00e1c lo\u1ea1i OM kh\u00e1c nhau c\u00f3 b\u0103ng th\u00f4ng, kho\u1ea3ng c\u00e1ch truy\u1ec1n ho\u1eb7c t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u kh\u00e1c nhau, gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng t\u00ecm \u0111\u01b0\u1ee3c s\u1ee3i quang ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<p>V\u00e2ng! Tr\u00ean th\u1ef1c t\u1ebf c\u00f3 5 lo\u1ea1i c\u00e1p quang \u0111a ch\u1ebf \u0111\u1ed9: OM1, OM2, OM3, OM4 v\u00e0 OM5.&nbsp;<\/p>\n\n\n\n<p>C\u00e1c lo\u1ea1i OM kh\u00e1c nhau n\u00e0y \u0111\u01b0\u1ee3c t\u1ea1o ra do nhu c\u1ea7u v\u1ec1 m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eef li\u1ec7u nhanh h\u01a1n tr\u00ean kho\u1ea3ng c\u00e1ch xa h\u01a1n. B\u1ea1n bi\u1ebft \u0111\u1ea5y, s\u1ee3i quang OM5 m\u1edbi nh\u1ea5t c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u01b0\u1edbc s\u00f3ng ng\u1eafn, cho ph\u00e9p nhi\u1ec1u t\u00edn hi\u1ec7u tr\u00ean m\u1ed9t s\u1ee3i quang \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n so v\u1edbi c\u00e1c th\u1ebf h\u1ec7 tr\u01b0\u1edbc.<\/p>\n\n\n\n<p>H\u01a1n n\u1eefa, m\u1ed9t ng\u01b0\u1eddi d\u00f9ng Qoura t\u00ean l\u00e0 Angelina Li c\u0169ng \u0111\u00e3 gi\u1ea3i th\u00edch r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c lo\u1ea1i c\u00e1p quang \u0111a ch\u1ebf \u0111\u1ed9 d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc l\u00f5i v\u00e0 b\u0103ng th\u00f4ng.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><em>OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em><\/strong><strong><em>: S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec<\/em><\/strong><\/li>\n<\/ul>\n\n\n\n<p>Ch\u00fang ta h\u00e3y xem x\u00e9t s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c lo\u1ea1i OM n\u00e0y. Nh\u01b0ng tr\u01b0\u1edbc khi \u0111i s\u00e2u h\u01a1n, t\u00f4i mu\u1ed1n l\u00e0m r\u00f5 m\u1ed9t \u0111i\u1ec1u trong c\u00e1c s\u1ee3i n\u00e0y, s\u1ef1 t\u01b0\u01a1ng ph\u1ea3n quan tr\u1ecdng nh\u1ea5t n\u1eb1m \u1edf m\u1ee9c \u0111\u1ed9 ch\u00fang c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n tr\u00ean kho\u1ea3ng c\u00e1ch ng\u00e0y c\u00e0ng t\u0103ng v\u00e0 \u0111i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi s\u1ef1 ph\u00e2n t\u00e1n theo ph\u01b0\u01a1ng th\u1ee9c v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a ngu\u1ed3n s\u00e1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td rowspan=\"2\"><\/td><td rowspan=\"2\"><strong><em>K\u00edch th\u01b0\u1edbc l\u00f5i<\/em><\/strong><\/td><td rowspan=\"2\"><strong><em>Ngu\u1ed3n s\u00e1ng<\/em><\/strong><\/td><td colspan=\"3\"><strong><em>Kho\u1ea3ng c\u00e1ch truy\u1ec1n t\u1ed1i \u0111a<\/em><\/strong><\/td><td><strong><em>S\u1eed d\u1ee5ng ch\u00ednh<\/em><\/strong><\/td><\/tr><tr><td><strong><em>1G<\/em><\/strong><\/td><td><strong><em>10G<\/em><\/strong><\/td><td><strong><em>40G\/100G<\/em><\/strong><\/td><td><\/td><\/tr><tr><td><strong><em>OM1<\/em><\/strong><\/td><td><em>62,5\u00b5m<\/em><\/td><td><em>D\u1eaaN \u0110\u1ebeN<\/em><\/td><td><em>275 ph\u00fat<\/em><\/td><td><em>33 ph\u00fat<\/em><\/td><td><em>Kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/em><\/td><td><em>M\u1ea1ng l\u01b0\u1edbi c\u0169, v\u0103n ph\u00f2ng nh\u1ecf<\/em><\/td><\/tr><tr><td><strong><em>OM2<\/em><\/strong><\/td><td><em>50\u00b5m<\/em><\/td><td><em>D\u1eaaN \u0110\u1ebeN<\/em><\/td><td><em>550m<\/em><\/td><td><em>82 ph\u00fat<\/em><\/td><td><em>Kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/em><\/td><td><em>M\u1ea1ng LAN doanh nghi\u1ec7p, m\u1ea1ng c\u00e1p quang c\u0169<\/em><\/td><\/tr><tr><td><strong><em>OM3<\/em><\/strong><\/td><td><em>50\u00b5m<\/em><\/td><td><em>VCSEL<\/em><\/td><td><em>550m<\/em><\/td><td><em>300m<\/em><\/td><td><em>100m<\/em><\/td><td><em>Trung t\u00e2m d\u1eef li\u1ec7u, m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao<\/em><\/td><\/tr><tr><td><strong><em>OM4<\/em><\/strong><\/td><td><em>50\u00b5m<\/em><\/td><td><em>VCSEL<\/em><\/td><td><em>550m<\/em><\/td><td><em>550m<\/em><\/td><td><em>150 ph\u00fat<\/em><\/td><td><em>C\u00e1c trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn, m\u1ea1ng x\u01b0\u01a1ng s\u1ed1ng<\/em><\/td><\/tr><tr><td><strong><em>OM5<\/em><\/strong><\/td><td><em>50\u00b5m<\/em><\/td><td><em>VCSEL + SWDM<\/em><\/td><td><em>550m<\/em><\/td><td><em>550m<\/em><\/td><td><em>150m+ (h\u1ed7 tr\u1ee3 SWDM)<\/em><\/td><td><em>Trung t\u00e2m d\u1eef li\u1ec7u s\u1eb5n s\u00e0ng cho t\u01b0\u01a1ng lai, \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y<\/em><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong><em>T\u00f4i) <\/em><\/strong><strong><em>C\u00e1p quang OM1<\/em><\/strong><\/h4>\n\n\n\n<p>S\u1ee3i OM1 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u00f5i l\u00e0 62,5\u00b5m, cho ph\u00e9p truy\u1ec1n m\u1ed9t s\u1ed1 ch\u1ebf \u0111\u1ed9 \u00e1nh s\u00e1ng, nh\u01b0ng c\u0169ng d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e2n t\u00e1n ch\u1ebf \u0111\u1ed9 cao h\u01a1n nh\u01b0 \u0111\u00e3 th\u1ea3o lu\u1eadn tr\u01b0\u1edbc \u0111\u00f3. N\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho c\u00e1c ngu\u1ed3n s\u00e1ng LED 850 nm c\u00f3 hi\u1ec7u su\u1ea5t gh\u00e9p n\u1ed1i th\u1ea5p do \u0111\u1ed9 r\u1ed9ng ph\u1ed5 r\u1ed9ng c\u1ee7a ch\u00fang.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXcCp9zrFcB_l_oc9evdcPNAi71hjX56CxbJQGXSfcVswhN8FB1xibNA_fBfHjqTp4pYcEw3JCNl7tSBQXMje4jtTS-f_620L1-Vz6VRvNjw1YURilp2MFRDNy6of1OFmwiaI6kk?key=FtmL80JLpKUdw5maBCauermw\" alt=\"C\u00e1p quang OM1\"\/><\/figure>\n\n\n\n<p>Do nh\u1eefng h\u1ea1n ch\u1ebf n\u00e0y, OM1 c\u00f3 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n 1Gbps \u1edf kho\u1ea3ng c\u00e1ch 275 m\u00e9t. V\u1edbi \u0111\u1ed9 ph\u00e2n t\u00e1n l\u1ed7i th\u1eddi v\u00e0 b\u0103ng th\u00f4ng ch\u1ebf \u0111\u1ed9 th\u1ea5p h\u01a1n (x\u00e1c \u0111\u1ecbnh l\u01b0\u1ee3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 truy\u1ec1n qua m\u1ed9t kho\u1ea3ng c\u00e1ch c\u1ee5 th\u1ec3), \u01b0\u1edbc t\u00ednh kho\u1ea3ng 200 MHz x kilomet \u1edf 850 nm, OM1 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng trong c\u00e1c m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<p>Tuy nhi\u00ean, OM1 v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong c\u00e1c M\u1ea1ng c\u1ee5c b\u1ed9 c\u0169, m\u00f4i tr\u01b0\u1eddng v\u0103n ph\u00f2ng nh\u1ecf h\u01a1n, tr\u01b0\u1eddng h\u1ecdc v\u00e0 b\u1ec7nh vi\u1ec7n \u0111\u1ec3 h\u1ed7 tr\u1ee3 Ethernet 10 ho\u1eb7c 100 Megabit m\u1ed7i gi\u00e2y v\u00e0 1 Gigabit m\u1ed7i gi\u00e2y tr\u00ean kho\u1ea3ng c\u00e1ch ng\u1eafn.&nbsp;<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong><em>ii) <\/em><\/strong><strong><em>S\u1ee3i OM2<\/em><\/strong><strong><em> c\u00e1p quang<\/em><\/strong><\/h4>\n\n\n\n<p>So v\u1edbi OM1, s\u1ee3i OM2 c\u00f3 l\u00f5i 50\u00b5m cho ph\u00e9p gi\u1ea3m \u0111\u1ed9 m\u00e9o t\u00edn hi\u1ec7u. H\u01a1n n\u1eefa, t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u c\u0169ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n, cho ph\u00e9p \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 1Gbps l\u00ean \u0111\u1ebfn 550 m\u00e9t. M\u1eb7c d\u00f9 \u0111\u00e2y l\u00e0 m\u1ed9t b\u01b0\u1edbc \u0111i \u0111\u00fang h\u01b0\u1edbng, OM2 v\u1eabn b\u1ecb h\u1ea1n ch\u1ebf b\u1edfi c\u00e1c h\u1ea1n ch\u1ebf c\u1ee7a \u0111\u00e8n LED v\u00e0 v\u1eabn kh\u00f4ng th\u1ec3 h\u1ed7 tr\u1ee3 hi\u1ec7u qu\u1ea3 t\u1ed1c \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 10Gbps.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXfiUBQGPbHxprKA810m35DR89nDFumnitSiN49kLhqHPwfIcksoJ0rfLlCaybI-Hy4MCy8Z_JxDZ3pq1sVi4HvX9Zcccn13NHW27XWIw1n8erQ4Izcpb16AynHuqMgSYuODBbcQ?key=FtmL80JLpKUdw5maBCauermw\" alt=\"C\u00e1p quang OM2\"\/><\/figure>\n\n\n\n<p>OM2 l\u00e0 phi\u00ean b\u1ea3n t\u1ed1t h\u01a1n OM1, do \u0111\u00f3 n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 1Gbps l\u00ean \u0111\u1ebfn 550m v\u00e0 10Gbps l\u00ean \u0111\u1ebfn 82m, r\u1ea5t h\u1eefu \u00edch cho c\u00e1c m\u1ea1ng doanh nghi\u1ec7p, t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p v\u00e0 c\u01a1 s\u1edf gi\u00e1o d\u1ee5c.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong><em>iii) <\/em><\/strong><strong><em>S\u1ee3i OM3<\/em><\/strong><strong><em> c\u00e1p quang<\/em><\/strong><\/h4>\n\n\n\n<p>S\u1ee3i quang OM3 c\u00f3 b\u0103ng th\u00f4ng ph\u01b0\u01a1ng th\u1ee9c cao g\u1ea5p 4 l\u1ea7n (2000 MHz\u00b7km \u1edf 850nm) so v\u1edbi c\u00e1p quang OM2. Do \u0111\u00f3, t\u0103ng th\u00eam kho\u1ea3ng c\u00e1ch ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u01b0u cho c\u00e1c ngu\u1ed3n VCSEL. C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m nh\u01b0 v\u1eady cho ph\u00e9p OM3 h\u1ed7 tr\u1ee3 10 Gbps l\u00ean \u0111\u1ebfn 300m, 40Gbps tr\u00ean 100 m\u00e9t v\u00e0 100Gbps tr\u00ean 70 m\u00e9t.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXc_wfq34SPScizyhyFpWSrJYGLRuft3678WAD8wWupaBdm-SLbWGPgS8lTcDvR8dminJ6fzq9Mllma3h-2iMQBb73e69xGoz4H0EkFrAC5daNWUsZjPSAxB-dMXqD9ZP-mE9NVC?key=FtmL80JLpKUdw5maBCauermw\" alt=\"C\u00e1p quang OM3\"\/><\/figure>\n\n\n\n<p>\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao \u0111\u1ed9 r\u1ed9ng ph\u1ed5 h\u1eb9p h\u01a1n, hi\u1ec7u su\u1ea5t gh\u00e9p n\u1ed1i cao h\u01a1n v\u00e0 \u0111\u1ed9 ph\u00e2n k\u1ef3 th\u1ea5p h\u01a1n so v\u1edbi ngu\u1ed3n LED khi\u1ebfn OM3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng \u0111\u1ec3 s\u1eed d\u1ee5ng trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u, m\u1ea1ng doanh nghi\u1ec7p v\u00e0 m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong><em>iv) <\/em><\/strong><strong><em>S\u1ee3i OM4<\/em><\/strong><strong><em> c\u00e1p quang<\/em><\/strong><\/h4>\n\n\n\n<p>L\u00e0 m\u1ed9t lo\u1ea1i ph\u00e1t tri\u1ec3n h\u01a1n c\u1ee7a OM3, s\u1ee3i quang OM4 c\u0169ng c\u00f3 l\u00f5i 50\u00b5m nh\u01b0ng c\u00f3 b\u0103ng th\u00f4ng ph\u01b0\u01a1ng th\u1ee9c hi\u1ec7u d\u1ee5ng (EMB) l\u00e0 4700 MHz.km \u1edf 850nm, cao h\u01a1n OM3. H\u01a1n n\u1eefa, n\u00f3 c\u0169ng cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u 10Gp \u0111\u1ebfn kho\u1ea3ng c\u00e1ch tr\u00ean 550m v\u00e0 40Gbps ho\u1eb7c th\u1eadm ch\u00ed 100Gbps tr\u00ean 150m.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXdFWrBGyN2YVF7B5PI_wCD9zEDCvR8v4ohx2DP2utY_vLWJrJqFHCWvUwV4oHn_sCdZP1cNzwgbYT66oBpOJDfdFr_tpeBhNg0qNww-F2gcAY_5JpUtvSQ5R-L01NdDIyyD2FNNug?key=FtmL80JLpKUdw5maBCauermw\" alt=\"C\u00e1p quang OM4\"\/><\/figure>\n\n\n\n<p>Do \u0111\u00f3, kho\u1ea3ng c\u00e1ch truy\u1ec1n kh\u00f4ng gi\u1edbi h\u1ea1n m\u00e0 kh\u00f4ng l\u00e0m m\u00e9o t\u00edn hi\u1ec7u khi\u1ebfn OM4 tr\u1edf th\u00e0nh s\u1ee3i quang \u0111\u01b0\u1ee3c s\u0103n \u0111\u00f3n nhi\u1ec1u nh\u1ea5t cho c\u00e1c m\u1ea1ng x\u01b0\u01a1ng s\u1ed1ng, trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn v\u00e0 m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n to\u00e1n hi\u1ec7u su\u1ea5t cao.&nbsp;<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong><em>(v\u00ed d\u1ee5)<\/em><\/strong><strong><em> S\u1ee3i OM5<\/em><\/strong><strong><em> c\u00e1p quang<\/em><\/strong><\/h4>\n\n\n\n<p>OM5 l\u00e0 chu\u1ea9n s\u1ee3i \u0111a ch\u1ebf \u0111\u1ed9 m\u1edbi nh\u1ea5t c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u00f5i l\u00e0 50\u00b5m. Kh\u00f4ng gi\u1ed1ng nh\u01b0 OM3 v\u00e0 OM4, ho\u1ea1t \u0111\u1ed9ng tr\u00ean m\u1ed9t b\u01b0\u1edbc s\u00f3ng duy nh\u1ea5t (850 nm), OM5 c\u00f3 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 nhi\u1ec1u b\u01b0\u1edbc s\u00f3ng trong kho\u1ea3ng t\u1eeb 850 nm \u0111\u1ebfn 953. N\u00f3 cho ph\u00e9p truy\u1ec1n b\u1ed1n k\u00eanh kh\u00e1c nhau c\u00f9ng l\u00fac tr\u00ean m\u1ed9t s\u1ee3i quang duy nh\u1ea5t.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXe6cjf-Isnl0ZIujd1_xeQmmyCyXc36m4ULtA38z1gL7SsEiwPWmq3PmnrV76OFwOfsvIAYpdeCjSjnx4JHy_Wj7V4MCbvz0Tympue1NQa6jOxCW07iXwokx9bgmhNc63YFJpLGfA?key=FtmL80JLpKUdw5maBCauermw\" alt=\"C\u00e1p quang OM5\"\/><\/figure>\n\n\n\n<p>Do \u0111\u00f3, s\u1ef1 ti\u1ebfn b\u1ed9 n\u00e0y h\u1ed7 tr\u1ee3 truy\u1ec1n t\u1ed1c \u0111\u1ed9 cao 100Gbps, 200Gbps v\u00e0 400Gbps tr\u00ean kho\u1ea3ng c\u00e1ch xa. H\u01a1n n\u1eefa, n\u00f3 l\u00e0m cho OM5 tr\u1edf th\u00e0nh s\u1ee3i quang l\u00fd t\u01b0\u1edfng cho trung t\u00e2m d\u1eef li\u1ec7u AI, \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y si\u00eau t\u1ed1c v\u00e0 h\u1ed7 tr\u1ee3 m\u1ea1ng m\u1edbi t\u1ed1c \u0111\u1ed9 cao v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 AI.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><em>S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 m\u1eb7t v\u1eadt l\u00fd gi\u1eefa OM1, OM2, OM3, OM4 v\u00e0 OM5 (M\u00e0u \u00e1o kho\u00e1c v\u00e0 d\u1ea5u hi\u1ec7u)<\/em><\/strong><\/li>\n<\/ul>\n\n\n\n<p>H\u01a1n n\u1eefa, m\u1ed9t trong nh\u1eefng c\u00e1ch d\u1ec5 nh\u1ea5t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c lo\u1ea1i s\u1ee3i \u0111a ch\u1ebf \u0111\u1ed9 kh\u00e1c nhau l\u00e0 theo m\u00e0u v\u1ecf c\u1ee7a ch\u00fang. Ti\u00eau chu\u1ea9n m\u00e3 m\u00e0u gi\u00fap c\u00e1c k\u1ef9 thu\u1eadt vi\u00ean v\u00e0 k\u1ef9 s\u01b0 m\u1ea1ng nhanh ch\u00f3ng ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c lo\u1ea1i s\u1ee3i trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXepCh5b5yZr4l31Fvupps9NvIXhZ-Ib-a4Wa0ECSgdDSIckYIO-YScHp1cKV1QuPMoM2aZL54KBuhEIDzFmSvwibdu88YwFDadokLj3e798M4jZwYB4sy1JPce93G2GqwMbEvUrtg?key=FtmL80JLpKUdw5maBCauermw\" alt=\"S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa OM1, OM2, OM3, OM4 v\u00e0 OM5\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><\/td><td><strong><em>M\u00e0u \u00e1o kho\u00e1c<\/em><\/strong><\/td><td><strong><em>C\u00e1c lo\u1ea1i \u0111\u1ea7u n\u1ed1i ph\u1ed5 bi\u1ebfn<\/em><\/strong><\/td><\/tr><tr><td><strong><em>OM1<\/em><\/strong><\/td><td><em>Qu\u1ea3 cam<\/em><\/td><td><em>SC, ST, LC<\/em><\/td><\/tr><tr><td><strong><em>OM2<\/em><\/strong><\/td><td><em>Qu\u1ea3 cam<\/em><\/td><td><em>SC, ST, LC<\/em><\/td><\/tr><tr><td><strong><em>OM3<\/em><\/strong><\/td><td><em>Aqua (M\u00e0u xanh ng\u1ecdc)<\/em><\/td><td><em>SC, ST, LC, MPO<\/em><\/td><\/tr><tr><td><strong><em>OM4<\/em><\/strong><\/td><td><em>Erika Violet ho\u1eb7c Aqua (Xanh ng\u1ecdc)<\/em><\/td><td><em>SC, LC, MPO<\/em><\/td><\/tr><tr><td><strong><em>OM5<\/em><\/strong><\/td><td><em>Xanh chanh<\/em><\/td><td><em>SC, LC, MPO<\/em><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><em>3) K\u1ebft lu\u1eadn<\/em><\/strong><\/h2>\n\n\n\n<p>T\u00f3m l\u1ea1i, b\u1eb1ng c\u00e1ch \u0111\u00e1nh gi\u00e1 v\u00e0 so s\u00e1nh n\u0103m lo\u1ea1i c\u00e1p quang \u0111a ch\u1ebf \u0111\u1ed9 ch\u00ednh, r\u00f5 r\u00e0ng l\u00e0 OM1 v\u00e0 OM2 \u0111\u00e3 l\u1ed7i th\u1eddi nh\u01b0ng v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c t\u00ecnh hu\u1ed1ng t\u1ed1c \u0111\u1ed9 th\u1ea5p. Tuy nhi\u00ean, n\u1ebfu ch\u00fang ta n\u00f3i v\u1ec1 OM3 v\u00e0 OM4, th\u00ec ch\u00fang t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho c\u00e1c s\u1ee3i truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao, l\u00e0 chu\u1ea9n m\u1ef1c c\u1ee7a ng\u00e0nh. H\u01a1n n\u1eefa, OM5 l\u00e0 s\u1ee3i quang m\u1edbi nh\u1ea5t tr\u00ean th\u1ecb tr\u01b0\u1eddng h\u1ed7 tr\u1ee3 SWDM (Short Wavelength Division Multiplexing) v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng 400Gbps.&nbsp;<\/p>\n\n\n\n<p>Do \u0111\u00f3, vi\u1ec7c l\u1ef1a ch\u1ecdn s\u1eed d\u1ee5ng s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 n\u00e0o ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c th\u00f4ng s\u1ed1 kh\u00e1c nh\u01b0 kho\u1ea3ng c\u00e1ch, b\u0103ng th\u00f4ng v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u trong m\u1ea1ng c\u00f4ng ty, trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 h\u1ec7 th\u1ed1ng \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y.&nbsp;<br>Ngo\u00e0i ra, m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e1ng tin c\u1eady c\u0169ng quan tr\u1ecdng kh\u00f4ng k\u00e9m n\u1ebfu b\u1ea1n kh\u00f4ng mu\u1ed1n th\u1ecfa hi\u1ec7p v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng. V\u00ec v\u1eady, t\u00f4i khuy\u00ean b\u1ea1n n\u00ean li\u00ean h\u1ec7 v\u1edbi Dekam Fibres. Ch\u00fang t\u00f4i <a href=\"https:\/\/dekam-fiber.com\/vi\/fiber-optic-cable-manufacturers-in-china\/\" target=\"_blank\" rel=\"noreferrer noopener\">China&#8217;s best fibre optic cable manufacturer<\/a> and exporting our products to 35+ countries. So, don&#8217;t waste time and request an instant quote today!<\/p>","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n c\u00f3 mu\u1ed1n bi\u1ebft b\u00ed m\u1eadt \u0111\u1eb1ng sau vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao qua c\u00e1c v\u0103n ph\u00f2ng, trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng c\u00f4ng nghi\u1ec7p kh\u00f4ng? V\u00e2ng! S\u1ee3i \u0111a ch\u1ebf \u0111\u1ed9 l\u00e0 nh\u1eefng anh h\u00f9ng \u1ea9n m\u00ecnh \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i li\u1ec1n m\u1ea1ch trong c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau. H\u01a1n n\u1eefa, c\u00f4ng ngh\u1ec7 s\u1ee3i \u0111\u00e3 \u0111\u01b0\u1ee3c n\u00e2ng c\u1ea5p t\u1eeb OM1 l\u00ean OM5 \u0111\u1ec3 \u0111\u00e1p \u1ee9ng [\u2026]<\/p>","protected":false},"author":1,"featured_media":17377,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Multimode Fibre Types: OM1 vs OM2 vs OM3 vs OM4 vs OM5","_seopress_titles_desc":"","_seopress_robots_index":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-18356","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/dekam-fiber.com\/vi\/wp-json\/wp\/v2\/posts\/18356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dekam-fiber.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dekam-fiber.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dekam-fiber.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dekam-fiber.com\/vi\/wp-json\/wp\/v2\/comments?post=18356"}],"version-history":[{"count":6,"href":"https:\/\/dekam-fiber.com\/vi\/wp-json\/wp\/v2\/posts\/18356\/revisions"}],"predecessor-version":[{"id":19082,"href":"https:\/\/dekam-fiber.com\/vi\/wp-json\/wp\/v2\/posts\/18356\/revisions\/19082"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dekam-fiber.com\/vi\/wp-json\/wp\/v2\/media\/17377"}],"wp:attachment":[{"href":"https:\/\/dekam-fiber.com\/vi\/wp-json\/wp\/v2\/media?parent=18356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dekam-fiber.com\/vi\/wp-json\/wp\/v2\/categories?post=18356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dekam-fiber.com\/vi\/wp-json\/wp\/v2\/tags?post=18356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}