{"id":3145,"date":"2025-03-26T09:39:21","date_gmt":"2025-03-26T09:39:21","guid":{"rendered":"https:\/\/commmesh.com\/?p=3145"},"modified":"2025-04-01T06:10:27","modified_gmt":"2025-04-01T06:10:27","slug":"om1-vs-om2-vs-om3-vs-om4-vs-om5","status":"publish","type":"post","link":"https:\/\/commmesh.com\/vi\/om1-vs-om2-vs-om3-vs-om4-vs-om5\/","title":{"rendered":"OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5 S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?"},"content":{"rendered":"

T\u01b0\u1edfng t\u01b0\u1ee3ng s\u1ee3i \u0111a mode<\/em> nh\u01b0 nh\u1eefng xa l\u1ed9 nh\u1ed9n nh\u1ecbp c\u1ee7a m\u1ea1ng d\u1eef li\u1ec7u t\u1ea7m ng\u1eafn\u2014mang nhi\u1ec1u t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng c\u00f9ng m\u1ed9t l\u00fac, gi\u1ed1ng nh\u01b0 nh\u1eefng l\u00e0n \u0111\u01b0\u1eddng ch\u1eadt k\u00edn ph\u01b0\u01a1ng ti\u1ec7n \u0111ang ch\u1ea1y nhanh v\u1ec1 \u0111\u00edch. Kh\u00f4ng gi\u1ed1ng nh\u01b0 s\u1ee3i \u0111\u01a1n mode<\/a>, \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u01b0\u1eddng d\u00e0i, s\u1ee3i \u0111a mode<\/em> v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng nh\u01b0 trung t\u00e2m d\u1eef li\u1ec7u, khu\u00f4n vi\u00ean tr\u01b0\u1eddng v\u00e0 t\u00f2a nh\u00e0 v\u0103n ph\u00f2ng, n\u01a1i kho\u1ea3ng c\u00e1ch ng\u1eafn h\u01a1n nh\u01b0ng t\u1ed1c \u0111\u1ed9 v\u00e0 chi ph\u00ed quan tr\u1ecdng. C\u00e2u h\u1ecfi v\u1ec1 OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em> \u0111\u1ecbnh ngh\u0129a th\u1ebf gi\u1edbi n\u00e0y, nh\u01b0 nh\u1eefng ti\u00eau chu\u1ea9n n\u00e0y\u2014do TIA v\u00e0 ISO \u0111\u1eb7t ra (TIA-568<\/a>)\u2014\u0111\u00e1nh d\u1ea5u s\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a s\u1ee3i \u0111a mode<\/em> hi\u1ec7u su\u1ea5t. H\u01b0\u1edbng d\u1eabn n\u00e0y ph\u00e2n t\u00edch t\u1eebng lo\u1ea1i\u2014OM1, OM2, OM3, OM4 v\u00e0 OM5\u2014so s\u00e1nh th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, kh\u1ea3 n\u0103ng v\u00e0 m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng c\u1ee7a ch\u00fang, \u0111\u1ed3ng th\u1eddi n\u00eau b\u1eadt c\u00e1ch CommMesh cung c\u1ea5p c\u00e1c s\u1ee3i quang n\u00e0y cho nhu c\u1ea7u m\u1ea1ng c\u1ee7a b\u1ea1n. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n s\u1ee3i \u0111a mode<\/em> v\u00e0 xem th\u1ebf n\u00e0o OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em> h\u00ecnh th\u00e0nh k\u1ebft n\u1ed1i!<\/p>\n\n\n\n\n\n

S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 l\u00e0 g\u00ec?<\/h2>\n\n\n\n

S\u1ee3i \u0111a mode<\/em> l\u00e0 m\u1ed9t lo\u1ea1i s\u1ee3i quang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 truy\u1ec1n nhi\u1ec1u \u0111\u01b0\u1eddng d\u1eabn \u00e1nh s\u00e1ng\u2014ho\u1eb7c ch\u1ebf \u0111\u1ed9\u2014\u0111\u1ed3ng th\u1eddi, l\u00e0m cho n\u00f3 tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng t\u1ed1c \u0111\u1ed9 cao, kho\u1ea3ng c\u00e1ch ng\u1eafn. Kh\u00f4ng gi\u1ed1ng nh\u01b0 s\u1ee3i quang ch\u1ebf \u0111\u1ed9 \u0111\u01a1n, s\u1eed d\u1ee5ng l\u00f5i 9 micron nh\u1ecf cho m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn \u00e1nh s\u00e1ng tr\u00ean nhi\u1ec1u km, s\u1ee3i \u0111a mode<\/em> c\u00f3 l\u00f5i l\u1edbn h\u01a1n\u2014th\u01b0\u1eddng l\u00e0 50 ho\u1eb7c 62,5 micron\u2014cho ph\u00e9p nhi\u1ec1u ch\u1ebf \u0111\u1ed9 di chuy\u1ec3n, m\u1eb7c d\u00f9 \u0111i\u1ec1u n\u00e0y h\u1ea1n ch\u1ebf kho\u1ea3ng c\u00e1ch do s\u1ef1 ph\u00e2n t\u00e1n ch\u1ebf \u0111\u1ed9 (\u0111\u01b0\u1eddng \u0111i c\u1ee7a \u00e1nh s\u00e1ng \u0111\u1ebfn v\u00e0o nh\u1eefng th\u1eddi \u0111i\u1ec3m h\u01a1i kh\u00e1c nhau). Trong cu\u1ed9c tranh lu\u1eadn v\u1ec1 OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em>, m\u1ed7i lo\u1ea1i \u0111\u1ec1u c\u1ea3i thi\u1ec7n thi\u1ebft k\u1ebf n\u00e0y, t\u0103ng c\u01b0\u1eddng b\u0103ng th\u00f4ng v\u00e0 ph\u1ea1m vi ti\u1ebfp c\u1eadn cho c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i\u2014c\u00f3 th\u1ec3 l\u00ean t\u1edbi 10G, 40G ho\u1eb7c th\u1eadm ch\u00ed 100G tr\u00ean h\u00e0ng tr\u0103m m\u00e9t.<\/p>\n\n\n\n

\"S\u1ee3i<\/a>
S\u1ee3i \u0111a mode<\/figcaption><\/figure>\n\n\n\n

Ch\u00eca kh\u00f3a \u0111\u1ec3 s\u1ee3i \u0111a mode<\/em> n\u1eb1m \u1edf b\u0103ng th\u00f4ng m\u00f4 h\u00ecnh c\u1ee7a n\u00f3\u2014\u0111\u01b0\u1ee3c \u0111o b\u1eb1ng MHz\u00b7km\u2014quy\u1ebft \u0111\u1ecbnh l\u01b0\u1ee3ng d\u1eef li\u1ec7u m\u00e0 n\u00f3 c\u00f3 th\u1ec3 mang tr\u01b0\u1edbc khi s\u1ef1 ph\u00e2n t\u00e1n l\u00e0m m\u1edd t\u00edn hi\u1ec7u. OM1, l\u00e0 c\u00f4ng ngh\u1ec7 l\u00e2u \u0111\u1eddi nh\u1ea5t, \u0111\u00e3 b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh n\u00e0y, trong khi OM5, c\u00f4ng ngh\u1ec7 m\u1edbi nh\u1ea5t, \u0111\u1ea9y m\u1ea1nh gi\u1edbi h\u1ea1n v\u1edbi c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn nh\u01b0 Ph\u00e2n chia b\u01b0\u1edbc s\u00f3ng ng\u1eafn (\u0110\u1ea0I H\u1eccC SWDM<\/a>). T\u1eeb kh\u1edfi \u0111\u1ea7u khi\u00eam t\u1ed1n c\u1ee7a OM1 \u0111\u1ebfn ti\u1ec1m n\u0103ng ti\u00ean ti\u1ebfn c\u1ee7a OM5, s\u1ee3i \u0111a mode<\/em> cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p ti\u1ebft ki\u1ec7m chi ph\u00ed cho nhu c\u1ea7u v\u1eadn chuy\u1ec3n ch\u1eb7ng ng\u1eafn\u2014ho\u00e0n h\u1ea3o cho th\u1ebf gi\u1edbi d\u1eef li\u1ec7u ng\u00e0y nay.<\/p>\n\n\n\n

S\u1ee3i quang \u0111a mode OM1: Ti\u00eau chu\u1ea9n ban \u0111\u1ea7u<\/h2>\n\n\n\n

OM1 s\u1ee3i \u0111a mode<\/em> \u0111\u00e3 kh\u1edfi \u0111\u1ea7u k\u1ef7 nguy\u00ean \u0111a ch\u1ebf \u0111\u1ed9 v\u1edbi l\u00f5i 62,5 micron\u2014l\u1edbn h\u01a1n c\u00e1c lo\u1ea1i sau n\u00e0y\u2014v\u00e0 c\u1ea5u h\u00ecnh hi\u1ec7u su\u1ea5t khi\u00eam t\u1ed1n. \u0110\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o nh\u1eefng n\u0103m 1980, n\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean \u0111\u00e8n LED ban \u0111\u1ea7u, h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 nh\u01b0 100 Mbps tr\u00ean 2 km ho\u1eb7c 1 Gbps tr\u00ean 275m \u1edf 850 nm. Trong OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em>OM1 ch\u1eadm h\u01a1n v\u1edbi b\u0103ng th\u00f4ng m\u00f4 h\u00ecnh l\u00e0 200 MHz\u00b7km \u1edf 850 nm v\u00e0 500 MHz\u00b7km \u1edf 1300 nm\u2014\u0111\u1ee7 cho Ethernet c\u0169 nh\u01b0ng kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nhu c\u1ea7u t\u1ed1c \u0111\u1ed9 cao ng\u00e0y nay\u2014v\u00ed d\u1ee5, 10G gi\u1ea3m xu\u1ed1ng ch\u1ec9 c\u00f2n 33m do s\u1ef1 ph\u00e2n t\u00e1n.<\/p>\n\n\n\n

L\u00f5i d\u00e0y v\u00e0 b\u0103ng th\u00f4ng th\u1ea5p c\u1ee7a OM1 khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh di t\u00edch\u2014h\u00e3y ngh\u0129 \u0111\u1ebfn c\u00e1c m\u1ea1ng LAN v\u0103n ph\u00f2ng c\u0169 ho\u1eb7c c\u00e1c thi\u1ebft l\u1eadp c\u00f4ng nghi\u1ec7p v\u1eabn ch\u1ea1y Fast Ethernet. \u0110\u1ed9 suy gi\u1ea3m c\u1ee7a n\u00f3\u2014kho\u1ea3ng 3,5 dB\/km \u1edf 850 nm\u2014gi\u1edbi h\u1ea1n xa h\u01a1n so v\u1edbi c\u00e1c s\u1ee3i quang m\u1edbi h\u01a1n. M\u1eb7c d\u00f9 r\u1ebb (v\u00ed d\u1ee5: $0,20\/m), OM1 \u0111ang m\u1edd d\u1ea7n khi c\u00e1c m\u1ea1ng n\u00e2ng c\u1ea5p\u2014hi\u1ebfm khi \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn ng\u00e0y nay tr\u1eeb khi thay th\u1ebf c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n hi\u1ec7n c\u00f3.<\/p>\n\n\n\n

S\u1ee3i quang \u0111a mode OM2: M\u1ed9t b\u01b0\u1edbc ti\u1ebfn<\/h2>\n\n\n\n

OM2 s\u1ee3i \u0111a mode<\/em> thu nh\u1ecf l\u00f5i xu\u1ed1ng c\u00f2n 50 micron, t\u0103ng hi\u1ec7u su\u1ea5t so v\u1edbi OM1 v\u1edbi \u0111\u01b0\u1eddng d\u1eabn \u00e1nh s\u00e1ng s\u1ea1ch h\u01a1n. Ra m\u1eaft v\u00e0o nh\u1eefng n\u0103m 1990, n\u00f3 t\u0103ng g\u1ea5p \u0111\u00f4i b\u0103ng th\u00f4ng ph\u01b0\u01a1ng th\u1ee9c l\u00ean 500 MHz\u00b7km \u1edf 850 nm\u2014v\u1eabn th\u00e2n thi\u1ec7n v\u1edbi \u0111\u00e8n LED nh\u01b0ng ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi 1 Gbps tr\u00ean 550m ho\u1eb7c 10 Gbps tr\u00ean 82m\u2014ch\u00eca kh\u00f3a OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em>. \u0110\u1ed9 suy gi\u1ea3m gi\u1ea3m xu\u1ed1ng ~3,0 dB\/km \u1edf 850 nm, c\u1ea3i thi\u1ec7n \u0111\u1ed9 r\u00f5 n\u00e9t c\u1ee7a t\u00edn hi\u1ec7u qua l\u00f5i d\u00e0y h\u01a1n c\u1ee7a OM1\u2014v\u00ed d\u1ee5, li\u00ean k\u1ebft OM2 d\u00e0i 1 km m\u1ea5t 3 dB so v\u1edbi 3,5 dB c\u1ee7a OM1.<\/p>\n\n\n\n

OM2 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u1ea1ng v\u1eeba v\u00e0 nh\u1ecf\u2014v\u00ed d\u1ee5, x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a tr\u01b0\u1eddng h\u1ecdc ho\u1eb7c c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u ban \u0111\u1ea7u\u2014x\u1eed l\u00fd Gigabit Ethernet t\u1ed1t nh\u01b0ng l\u1ea1i qu\u00e1 t\u1ea3i \u1edf 10G do ph\u00e2n t\u00e1n. V\u1edbi m\u1ee9c gi\u00e1 kho\u1ea3ng $0,25\/m, \u0111\u00e2y l\u00e0 m\u1ed9t b\u01b0\u1edbc ti\u1ebfn ti\u1ebft ki\u1ec7m so v\u1edbi OM1, m\u1eb7c d\u00f9 l\u00f5i 50 micron c\u1ee7a n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n sau n\u00e0y, gi\u00fap d\u1ec5 d\u00e0ng t\u01b0\u01a1ng th\u00edch\u2014v\u00ed d\u1ee5, v\u00e1 v\u00e0o c\u00e1c h\u1ec7 th\u1ed1ng OM3. Trong s\u1ee3i \u0111a mode<\/em> ti\u1ebfn h\u00f3a, OM2 \u0111\u00e3 thu h\u1eb9p kho\u1ea3ng c\u00e1ch nh\u01b0ng v\u1eabn ch\u01b0a \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nhu c\u1ea7u hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n

S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 OM3: B\u01b0\u1edbc nh\u1ea3y v\u1ecdt \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a b\u1eb1ng laser<\/h2>\n\n\n\n

OM3 s\u1ee3i \u0111a mode<\/em> \u0111\u00e1nh d\u1ea5u m\u1ed9t b\u01b0\u1edbc nh\u1ea3y v\u1ecdt l\u1edbn, gi\u1eef nguy\u00ean l\u00f5i 50 micron nh\u01b0ng t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c ngu\u1ed3n laser nh\u01b0 VCSEL<\/a> (Laser ph\u00e1t x\u1ea1 b\u1ec1 m\u1eb7t khoang d\u1ecdc)\u2014m\u1ed9t b\u01b0\u1edbc ngo\u1eb7t trong OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em>. \u0110\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o nh\u1eefng n\u0103m 2000, n\u00f3 t\u1ef1 h\u00e0o c\u00f3 b\u0103ng th\u00f4ng 2000 MHz\u00b7km \u1edf 850 nm\u2014g\u1ea5p b\u1ed1n l\u1ea7n OM2\u2014h\u1ed7 tr\u1ee3 10 Gbps tr\u00ean 300m, 40 Gbps tr\u00ean 100m ho\u1eb7c 1 Gbps tr\u00ean 1 km. \u0110\u1ed9 suy gi\u1ea3m gi\u1eef \u1edf m\u1ee9c ~3,0 dB\/km, nh\u01b0ng \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a laser c\u1eaft gi\u1ea3m \u0111\u1ed9 ph\u00e2n t\u00e1n\u2014v\u00ed d\u1ee5, li\u00ean k\u1ebft OM3 300m \u1edf 10G m\u1ea5t ~1 dB, ph\u00f9 h\u1ee3p v\u1edbi ng\u00e2n s\u00e1ch 7 dB.<\/p>\n\n\n\n

\"OM3\"<\/a>
OM3<\/figcaption><\/figure>\n\n\n\n

OM3 th\u1ed1ng tr\u1ecb c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng LAN doanh nghi\u1ec7p\u2014v\u00ed d\u1ee5, k\u1ebft n\u1ed1i gi\u00e1 \u0111\u1ee1 m\u00e1y ch\u1ee7 ho\u1eb7c s\u00e0n t\u00f2a nh\u00e0\u2014nh\u1edd s\u1ee9c m\u1ea1nh 10G v\u00e0 gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng (~$0,40\/m). L\u1edbp v\u1ecf n\u01b0\u1edbc c\u1ee7a n\u00f3 b\u00e1o hi\u1ec7u s\u1ef1 t\u1ed1i \u01b0u h\u00f3a b\u1eb1ng laser v\u00e0 trong s\u1ee3i \u0111a mode<\/em> So s\u00e1nh, OM3 c\u00e2n b\u1eb1ng gi\u1eefa chi ph\u00ed v\u00e0 t\u1ed1c \u0111\u1ed9\u2014l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u1ea1ng \u0111ang ph\u00e1t tri\u1ec3n c\u1ea7n nhi\u1ec1u h\u01a1n nh\u1eefng g\u00ec OM2 c\u00f3 th\u1ec3 cung c\u1ea5p.<\/p>\n\n\n\n

S\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 OM4: Hi\u1ec7u su\u1ea5t \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n<\/h2>\n\n\n\n

OM4 s\u1ee3i \u0111a mode<\/em> tinh ch\u1ec9nh OM3, gi\u1eef nguy\u00ean l\u00f5i 50 micron nh\u01b0ng \u0111\u1ea9y b\u0103ng th\u00f4ng l\u00ean 4700 MHz\u00b7km \u1edf 850 nm\u2014g\u1ea5p \u0111\u00f4i dung l\u01b0\u1ee3ng c\u1ee7a OM3\u2014trong OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em>. Ra m\u1eaft v\u00e0o kho\u1ea3ng n\u0103m 2010, n\u00f3 m\u1edf r\u1ed9ng 10 Gbps \u0111\u1ebfn 550m, 40 Gbps \u0111\u1ebfn 150m v\u00e0 100 Gbps \u0111\u1ebfn 100m\u2014v\u00ed d\u1ee5, li\u00ean k\u1ebft OM4 150m \u1edf 40G m\u1ea5t ~0,5 dB, n\u1eb1m trong ph\u1ea1m vi ng\u00e2n s\u00e1ch 1,5 dB. \u0110\u1ed9 suy gi\u1ea3m v\u1eabn \u1edf m\u1ee9c ~3,0 dB\/km, nh\u01b0ng s\u1ea3n xu\u1ea5t ch\u1eb7t ch\u1ebd h\u01a1n\u2014v\u00ed d\u1ee5, t\u00ednh \u0111\u1ed3ng nh\u1ea5t l\u00f5i t\u1ed1t h\u01a1n\u2014l\u00e0m gi\u1ea3m \u0111\u1ed9 ph\u00e2n t\u00e1n h\u01a1n n\u1eefa.<\/p>\n\n\n\n

OM4 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u m\u1eadt \u0111\u1ed9 cao v\u00e0 m\u1ea1ng l\u01b0\u1edbi khu\u00f4n vi\u00ean tr\u01b0\u1eddng h\u1ecdc\u2014v\u00ed d\u1ee5, x\u01b0\u01a1ng s\u1ed1ng 40G ho\u1eb7c t\u01b0\u01a1ng lai cho 100G\u2014c\u00f3 gi\u00e1 ~$0,60\/m. L\u1edbp v\u1ecf ngo\u00e0i b\u1eb1ng n\u01b0\u1edbc c\u1ee7a n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi OM3, nh\u01b0ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u01b0\u1ee3t tr\u1ed9i khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u0111\u1ec3 n\u00e2ng c\u1ea5p\u2014v\u00ed d\u1ee5, thay th\u1ebf OM3 trong ph\u1ea1m vi 200m \u0111\u1ec3 \u0111\u1ea1t 40G m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady. Trong s\u1ee3i \u0111a mode<\/em> C\u01b0\u1ee3c, OM4 n\u00e2ng cao ti\u00eau chu\u1ea9n v\u1ec1 t\u1ed1c \u0111\u1ed9 v\u00e0 ph\u1ea1m vi ti\u1ebfp c\u1eadn.<\/p>\n\n\n\n

S\u1ee3i quang \u0111a mode OM5: L\u1ef1a ch\u1ecdn s\u1eb5n s\u00e0ng cho t\u01b0\u01a1ng lai<\/h2>\n\n\n\n

OM5 s\u1ee3i \u0111a mode<\/em>\u2014\u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o n\u0103m 2016\u2014m\u1ea5t s\u1ee3i \u0111a mode<\/em> l\u00ean t\u1ea7m cao m\u1edbi v\u1edbi c\u00f9ng l\u00f5i 50 micron nh\u01b0ng c\u00f3 m\u1ed9t \u0111i\u1ec3m kh\u00e1c bi\u1ec7t: \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho Ph\u00e2n chia b\u01b0\u1edbc s\u00f3ng ng\u1eafn (SWDM), s\u1eed d\u1ee5ng b\u01b0\u1edbc s\u00f3ng 850-950 nm. Trong OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em>, OM5 kh\u1edbp v\u1edbi OM4 4700 MHz\u00b7km \u1edf 850 nm nh\u01b0ng h\u1ed7 tr\u1ee3 40 Gbps tr\u00ean 440 m ho\u1eb7c 100 Gbps tr\u00ean 150 m v\u1edbi SWDM\u2014v\u00ed d\u1ee5, gh\u00e9p k\u00eanh b\u1ed1n k\u00eanh 25G \u1edf 880\/910\/940 nm tr\u00ean 150 m v\u1edbi m\u1ea5t m\u00e1t ~0,5 dB. \u0110\u1ed9 suy gi\u1ea3m l\u00e0 ~3,0 dB\/km \u1edf 850 nm, gi\u1ea3m nh\u1eb9 \u1edf c\u00e1c b\u01b0\u1edbc s\u00f3ng cao h\u01a1n.<\/p>\n\n\n\n

V\u1ecf m\u00e0u xanh l\u00e1 c\u00e2y chanh c\u1ee7a OM5 b\u00e1o hi\u1ec7u l\u1ee3i th\u1ebf SWDM c\u1ee7a n\u00f3, l\u00fd t\u01b0\u1edfng cho c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u th\u1ebf h\u1ec7 ti\u1ebfp theo\u2014v\u00ed d\u1ee5, 100G SWDM4 tr\u00ean 200m\u2014c\u00f3 gi\u00e1 ~$0,80\/m. N\u00f3 t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c v\u1edbi OM4 nh\u01b0ng t\u1ecfa s\u00e1ng v\u1edbi quang h\u1ecdc ti\u00ean ti\u1ebfn\u2014v\u00ed d\u1ee5, t\u0103ng g\u1ea5p \u0111\u00f4i dung l\u01b0\u1ee3ng tr\u00ean c\u00e1c l\u1ea7n ch\u1ea1y hi\u1ec7n c\u00f3\u2014khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn c\u00f3 t\u01b0 duy ti\u1ebfn b\u1ed9 trong s\u1ee3i \u0111a mode<\/em> s\u1ef1 ti\u1ebfn h\u00f3a.<\/p>\n\n\n\n

\"OM1<\/a>
OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/figcaption><\/figure>\n\n\n\n

Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt: OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/h2>\n\n\n\n

So s\u00e1nh s\u1ee3i \u0111a mode<\/em> c\u00e1c lo\u1ea1i \u0111\u1ed1i \u0111\u1ea7u l\u00e0m r\u00f5 OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em>.<\/p>\n\n\n\n

    \n
  • K\u00edch th\u01b0\u1edbc l\u00f5i:<\/strong> OM1: 62,5 \u03bcm; OM2-OM5: 50 \u03bcm\u2014l\u00f5i nh\u1ecf h\u01a1n l\u00e0m gi\u1ea3m s\u1ef1 ph\u00e2n t\u00e1n.<\/li>\n\n\n\n
  • B\u0103ng th\u00f4ng (850 nm):<\/strong> OM1: 200 MHz\u00b7km; OM2: 500 MHz\u00b7km; OM3: 2000 MHz\u00b7km; OM4\/OM5: 4700 MHz\u00b7km\u2014b\u0103ng th\u00f4ng cao h\u01a1n gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 v\u00e0 kho\u1ea3ng c\u00e1ch.<\/li>\n\n\n\n
  • T\u1ea7m v\u1edbi 10G (850 nm):<\/strong> OM1: 33m; OM2: 82m; OM3: 300m; OM4: 550m; OM5: 550m (kh\u00f4ng ph\u1ea3i SWDM)\u2014SWDM c\u1ee7a OM5 t\u0103ng th\u00eam t\u00ednh linh ho\u1ea1t.<\/li>\n\n\n\n
  • T\u1ea7m v\u1edbi 40G\/100G:<\/strong> OM1\/OM2: Kh\u00f4ng c\u00f3; OM3: 100m\/70m; OM4: 150m\/100m; OM5: 440m\/150m (SWDM)\u2014c\u00e1c lo\u1ea1i sau n\u00e0y v\u01b0\u1ee3t tr\u1ed9i \u1edf t\u1ed1c \u0111\u1ed9 cao.<\/li>\n\n\n\n
  • Suy gi\u1ea3m (850 nm):<\/strong> OM1: 3,5 dB\/km; OM2-OM5: ~3,0 dB\/km\u2014th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u1eb7t ch\u1ebd h\u01a1n gi\u00fap c\u1ea3i thi\u1ec7n t\u00edn hi\u1ec7u.<\/li>\n<\/ul>\n\n\n\n

    TRONG s\u1ee3i \u0111a mode<\/em>, OM1 v\u00e0 OM2 t\u1ee5t h\u1eadu, trong khi OM3, OM4 v\u00e0 OM5 d\u1eabn \u0111\u1ea7u\u2014CommMesh c\u00f3 t\u1ea5t c\u1ea3 c\u00e1c s\u1ea3n ph\u1ea9m n\u00e0y.<\/p>\n\n\n\n

    \u1ee8ng d\u1ee5ng c\u1ee7a c\u00e1c lo\u1ea1i s\u1ee3i \u0111a mode<\/h2>\n\n\n\n

    S\u1ee3i \u0111a mode<\/em> ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c ng\u00e1ch c\u1ee5 th\u1ec3 trong OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em>. OM1 ph\u00f9 h\u1ee3p v\u1edbi m\u1ea1ng LAN c\u0169\u2014v\u00ed d\u1ee5, 100 Mbps tr\u00ean 1 km trong c\u00e1c v\u0103n ph\u00f2ng c\u0169\u2014trong khi OM2 x\u1eed l\u00fd c\u00e1c li\u00ean k\u1ebft khu\u00f4n vi\u00ean tr\u01b0\u1eddng 1G\u2014v\u00ed d\u1ee5, 550m gi\u1eefa c\u00e1c t\u00f2a nh\u00e0. OM3 cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u 10G\u2014v\u00ed d\u1ee5, gi\u00e1 \u0111\u1ee1 m\u00e1y ch\u1ee7 300m\u2014c\u00e2n b\u1eb1ng chi ph\u00ed v\u00e0 t\u1ed1c \u0111\u1ed9\u2014v\u00ed d\u1ee5, $1000 cho \u0111\u01b0\u1eddng truy\u1ec1n 500m so v\u1edbi $3000 c\u1ee7a ch\u1ebf \u0111\u1ed9 \u0111\u01a1n. OM4 t\u0103ng t\u1ed1c cho 40G\/100G\u2014v\u00ed d\u1ee5, x\u01b0\u01a1ng s\u1ed1ng 150m trong m\u1ed9t c\u00f4ng ty c\u00f4ng ngh\u1ec7\u2014trong khi OM5 chu\u1ea9n b\u1ecb cho 400G trong t\u01b0\u01a1ng lai\u2014v\u00ed d\u1ee5, SWDM 150m trong m\u1ed9t c\u01a1 s\u1edf \u0111\u00e1m m\u00e2y.<\/p>\n\n\n\n

    C\u00e1c l\u1ed9 tr\u00ecnh n\u00e2ng c\u1ea5p kh\u00e1c nhau\u2014v\u00ed d\u1ee5, vi\u1ec7c ho\u00e1n \u0111\u1ed5i OM1 sang OM3 c\u1ea7n c\u00e1p m\u1edbi (\u0111\u1ed9 l\u1ec7ch 62,5 \u03bcm sang 50 \u03bcm), nh\u01b0ng OM3 sang OM4 s\u1eed d\u1ee5ng l\u1ea1i c\u00e1c l\u1ea7n ch\u1ea1y v\u1edbi quang h\u1ecdc t\u1ed1t h\u01a1n\u2014ti\u1ebft ki\u1ec7m ~$500 cho l\u1ea7n l\u1eafp l\u1ea1i 200m. S\u1ee3i \u0111a mode<\/em> th\u00edch \u1ee9ng v\u1edbi nhu c\u1ea7u\u2014OM5 d\u1eabn \u0111\u1ea7u.<\/p>\n\n\n\n

    Chi ph\u00ed v\u00e0 t\u00ednh kh\u1ea3 d\u1ee5ng c\u1ee7a s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9<\/h2>\n\n\n\n

    H\u00ecnh d\u1ea1ng chi ph\u00ed OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em> l\u1ef1a ch\u1ecdn. OM1 ($0.20\/m) v\u00e0 OM2 (<\/del>$0.25\/m) l\u00e0 r\u1ebb nh\u1ea5t\u2014c\u00f3 nhi\u1ec1u \u0111\u1ec3 s\u1eeda l\u1ed7i c\u0169\u2014v\u00ed d\u1ee5, $200 cho b\u1ea3n v\u00e1 OM2 d\u00e0i 1 km. OM3 ($0.40\/m) v\u00e0 OM4 (<\/del>$0,60\/m) t\u0103ng theo hi\u1ec7u su\u1ea5t\u2014v\u00ed d\u1ee5, $600 cho \u0111\u01b0\u1eddng truy\u1ec1n OM4 d\u00e0i 1 km\u2014c\u00f3 s\u1eb5n r\u1ed9ng r\u00e3i t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p nh\u01b0 CommMesh. OM5 (~$0,80\/m) c\u00f3 gi\u00e1 cao h\u01a1n\u2014v\u00ed d\u1ee5, $800 cho 1 km\u2014nh\u01b0ng ti\u1ebft ki\u1ec7m SWDM b\u00f9 \u0111\u1eafp cho chi ph\u00ed quang h\u1ecdc\u2014v\u00ed d\u1ee5, $2000 \u00edt h\u01a1n so v\u1edbi ch\u1ebf \u0111\u1ed9 \u0111\u01a1n cho 100G tr\u00ean 150m.<\/p>\n\n\n\n

    Ngu\u1ed3n cung thay \u0111\u1ed5i\u2014OM1\/OM2 gi\u1ea3m d\u1ea7n khi OM3\/OM4 chi\u1ebfm \u01b0u th\u1ebf\u2014v\u00ed d\u1ee5, 80% c\u1ee7a c\u00e1p quang trung t\u00e2m d\u1eef li\u1ec7u n\u0103m 2025\u2014trong khi OM5 t\u0103ng\u2014\u00e1p d\u1ee5ng 10% v\u00e0o n\u0103m 2023 (B\u00e1o c\u00e1o th\u1ecb tr\u01b0\u1eddng c\u00e1p quang). S\u1ee3i \u0111a mode<\/em> gi\u00e1 c\u1ea3 ph\u1ea3n \u00e1nh s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a n\u00f3\u2014CommMesh cung c\u1ea5p t\u1ea5t c\u1ea3 c\u00e1c c\u1ea5p \u0111\u1ed9.<\/p>\n\n\n\n

    Ch\u1ecdn \u0111\u00fang lo\u1ea1i s\u1ee3i \u0111a ch\u1ebf \u0111\u1ed9<\/h2>\n\n\n\n

    Ch\u1ecdn s\u1ee3i \u0111a mode<\/em> TRONG OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em> ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u. \u0110\u1ed1i v\u1edbi 1G c\u0169 d\u01b0\u1edbi 500m\u2014v\u00ed d\u1ee5, m\u1ea1ng LAN nh\u00e0 m\u00e1y c\u0169\u2014OM1 ho\u1eb7c OM2 l\u00e0 \u0111\u1ee7\u2014r\u1ebb v\u00e0 \u0111\u01a1n gi\u1ea3n\u2014v\u00ed d\u1ee5, $100 cho 500m OM2. \u0110\u1ed1i v\u1edbi trung t\u00e2m d\u1eef li\u1ec7u 10G\u2014v\u00ed d\u1ee5, li\u00ean k\u1ebft m\u00e1y ch\u1ee7 200m\u2014OM3 ph\u00f9 h\u1ee3p\u2014$400 cho 1 km\u2014trong khi 40G\/100G tr\u00ean 150m y\u00eau c\u1ea7u OM4\u2014$600 cho 1 km\u2014c\u00e2n b\u1eb1ng chi ph\u00ed v\u00e0 s\u1eed d\u1ee5ng trong t\u01b0\u01a1ng lai. OM5 t\u1ecfa s\u00e1ng cho 100G+ v\u1edbi SWDM\u2014v\u00ed d\u1ee5, x\u01b0\u01a1ng s\u1ed1ng \u0111\u00e1m m\u00e2y 200m\u2014$800 cho 1 km\u2014c\u1eaft gi\u1ea3m chi ph\u00ed d\u00e0i h\u1ea1n.<\/p>\n\n\n\n

    H\u01b0\u1edbng d\u1eabn v\u1ec1 kho\u1ea3ng c\u00e1ch v\u00e0 ng\u00e2n s\u00e1ch\u2014v\u00ed d\u1ee5: OM3 cho \u0111\u01b0\u1eddng truy\u1ec1n 100m 10G ($40) so v\u1edbi OM4 cho \u0111\u01b0\u1eddng truy\u1ec1n 200m 40G ($120)\u2014OM5 n\u1ebfu m\u1edf r\u1ed9ng quy m\u00f4 l\u00ean m\u00e1y d\u1ec7t 400G\u2014v\u00ed d\u1ee5: $160 cho \u0111\u01b0\u1eddng truy\u1ec1n 200m s\u1eb5n s\u00e0ng cho SWDM. S\u1ee3i \u0111a mode<\/em> s\u1ef1 l\u1ef1a ch\u1ecdn mang t\u00ednh chi\u1ebfn l\u01b0\u1ee3c\u2014CommMesh c\u00f3 c\u00e1c l\u1ef1a ch\u1ecdn cho t\u1ea5t c\u1ea3.<\/p>\n\n\n\n

    K\u1ebft lu\u1eadn: So s\u00e1nh OM1 vs OM2 vs OM3 vs OM4 vs OM5<\/h2>\n\n\n\n

    S\u1ee3i \u0111a mode<\/em> cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho c\u00e1c m\u1ea1ng t\u1ea7m ng\u1eafn v\u1edbi t\u00ednh linh ho\u1ea1t\u2014t\u1eeb kh\u1edfi \u0111\u1ea7u khi\u00eam t\u1ed1n c\u1ee7a OM1 \u0111\u1ebfn bi\u00ean gi\u1edbi SWDM c\u1ee7a OM5\u2014gi\u1ed1ng nh\u01b0 m\u1ed9t b\u1ed9 c\u00f4ng c\u1ee5 ng\u00e0y c\u00e0ng s\u1eafc b\u00e9n h\u01a1n qua m\u1ed7i th\u1ebf h\u1ec7. H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u00e3 ph\u00e2n t\u00edch OM1 so v\u1edbi OM2 so v\u1edbi OM3 so v\u1edbi OM4 so v\u1edbi OM5<\/em>, so s\u00e1nh th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, c\u00f4ng d\u1ee5ng v\u00e0 chi ph\u00ed c\u1ee7a ch\u00fang, cho th\u1ea5y c\u00e1ch s\u1ee3i \u0111a mode<\/em> ph\u00e1t tri\u1ec3n v\u1ec1 t\u1ed1c \u0111\u1ed9 v\u00e0 quy m\u00f4. Cho d\u00f9 l\u00e0 OM3 cho 10G ng\u00e0y nay hay OM5 cho 400G ng\u00e0y mai, CommMesh \u0111\u1ec1u cung c\u1ea5p \u0111\u00fang s\u1ee3i \u0111a mode<\/em> cho thi\u1ebft l\u1eadp c\u1ee7a b\u1ea1n\u2014b\u1eaft \u0111\u1ea7u t\u1eeb $0.20\/m. H\u00e3y l\u1ef1a ch\u1ecdn s\u00e1ng su\u1ed1t v\u00e0 x\u00e2y d\u1ef1ng m\u1ed9t m\u1ea1ng l\u01b0\u1edbi b\u1ec1n v\u1eefng!<\/p>","protected":false},"excerpt":{"rendered":"

    H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 nh\u01b0 nh\u1eefng xa l\u1ed9 nh\u1ed9n nh\u1ecbp c\u1ee7a m\u1ea1ng d\u1eef li\u1ec7u t\u1ea7m ng\u1eafn\u2014mang nhi\u1ec1u t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng c\u00f9ng m\u1ed9t l\u00fac, gi\u1ed1ng nh\u01b0 nh\u1eefng l\u00e0n \u0111\u01b0\u1eddng ch\u1eadt k\u00edn ph\u01b0\u01a1ng ti\u1ec7n giao th\u00f4ng \u0111ang t\u0103ng t\u1ed1c h\u01b0\u1edbng \u0111\u1ebfn \u0111\u00edch. Kh\u00f4ng gi\u1ed1ng nh\u01b0 s\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9, \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o \u0111\u1ec3 c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u01b0\u1eddng d\u00e0i, s\u1ee3i quang \u0111a ch\u1ebf \u0111\u1ed9 v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng nh\u01b0 trung t\u00e2m d\u1eef li\u1ec7u, khu\u00f4n vi\u00ean tr\u01b0\u1eddng v\u00e0 t\u00f2a nh\u00e0 v\u0103n ph\u00f2ng, n\u01a1i kho\u1ea3ng c\u00e1ch ng\u1eafn h\u01a1n nh\u01b0ng t\u1ed1c \u0111\u1ed9 v\u00e0 chi ph\u00ed [\u2026]<\/p>","protected":false},"author":1,"featured_media":3016,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"34","_seopress_titles_title":"OM1 vs OM2 vs OM3 vs OM4 vs OM5 What Is The Difference?","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[34],"tags":[],"class_list":["post-3145","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\/3145","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=3145"}],"version-history":[{"count":10,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts\/3145\/revisions"}],"predecessor-version":[{"id":3244,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts\/3145\/revisions\/3244"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/media\/3016"}],"wp:attachment":[{"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/media?parent=3145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/categories?post=3145"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/tags?post=3145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}