Yuav ua li cas deb ntawm fiber ntau optic cable tiag tiag khiav? Qhov ntawd nyob ntawm ntau tshaj li qhov cable nws tus kheej. Fiber hom, cov ntaub ntawv tus nqi, tus qauv transceiver, wavelength, connector poob, splice poob thiab txuas pob nyiaj siv txhua lub luag haujlwm. 10G SR txuas hla OM3 multimode fiber ntau sab saum toj tawm ib ncig ntawm 300 meters, thaum 10G LR txuas dhau OS2tib - hom fiber ntautuaj yeem ncav cuag 10 km nrog tib qhov ceev. Lub cable tsuas yog ib qho sib txawv hauv qhov sib npaug.
Raws li txoj cai ua haujlwm, multimode fiber ntau tuav cov kev sib txuas luv dua hauv cov chaw zov me nyuam, cov tsev thiab tsev kawm ntawv, thaum ib leeg - hom fiber ntau npog ntev dua rau cov pob txha, metro networks thiab telecom. Tab sis txhawm rau npaj qhov txuas tiag tiag, koj yuav tsum ua kom phim cov fiber ntau cable nrog qhov tseeb optical transceiver thiab suav tag nrho cov peev nyiaj poob.
Ntev npaum li cas Fiber Optic Cable khiav?
Fiber optic cable yuav khiav los ntawm ob peb meters mus rau zoo tshaj 80 kilometers, nyob ntawm seb lub network tsim. Cov ntaub ntawv luv luv txuas ntawm multimode fiber ntau yuav npog kaum lossis ntau pua meters. Kev lag luam lossis cov pob txha hauv tsev kawm ntawv ntawm OM3 lossis OM4 multimode fiber ntau ua haujlwm tau zoo rau ntau 10G, 40G lossis 100G daim ntawv thov nyob rau hauv lawv qhov chaw nyob deb. Rau qhov ntev -txoj kev txuas, OS2 ib leeg- hom fiber ntau nrog txoj kev optics txhawb 10 km, 40 km, 80 km lossis ntau dua.
Tsis muaj universal siab tshaj plaws fiber ntau optic cable nrug. Qhov siab tshaj plaws yog txiav txim siab los ntawm qhov txuas tiav - tsis yog cable ib leeg.
Xav txog ob qho xwm txheej 10G. ACisco 10GBASE-SR transceiverdhau OM3 multimode fiber ntau txhawb txog li 300 m, los yog mus txog 400 m tshaj OM4. A 10GBASE-LR transceiver dhau tus qauv ib zaug- hom fiber ntau txhawb 10 km. Tib ceev, sib txawv heev ncav cuag - vim hais tias cov transceiver thiab fiber ntau txhais cov kev txwv ua ke.
Dab tsi txiav txim siab Fiber Optic Cable nrug?
Hom Fiber: Ib leeg-Mode vs Multimode
Tib - hom fiber ntau muaj cov tub ntxhais me me - feem ntau nyob ib ncig ntawm 9 µm - thiab nqa ib hom kev nthuav tawm loj. Vim tias nws tsis txhob hloov pauv hloov pauv, nws txhawb nqa bandwidth siab dua nyob rau qhov ntev. CovFiber Optic Association (FOA)piav qhia hauv nws cov ntaub ntawv kev cob qhia uas ib zaug - hom fiber ntau tsis raug kev txom nyem los ntawm modal dispersion uas txwv multimode fiber ntau ncav cuag.
Multimode fiber ntau muaj cov tub ntxhais loj dua, feem ntau 50/125 µm lossis 62.5/125 µm. Nws tso cai rau ntau txoj kev teeb pom kev zoo, uas ua rau nws siv tau thiab raug nqi - siv tau rau luv luv - mus txog qhov txuas. Tab sis cov ntau hom tau nthuav tawm nyob deb - ib qho tshwm sim hu ua modal dispersion - thiab qhov no txwv ob qho tib si bandwidth thiab ncav cuag, tshwj xeeb tshaj yog nyob rau hauv siab dua. Rau qhov sib piv sib sib zog nqus, saib pebib leeg- hom vs multimode fiber ntau qhia.
Cov ntaub ntawv tus nqi thiab Bandwidth
Raws li kev ceev nce, kev txhawb nqa deb feem ntau txo qis. Ib qhov txuas fiber ntau uas ua haujlwm ntawm 1G tshaj 550 meters ntawm OM3 tsuas yog ncav cuag 300 meters ntawm 10G, thiab tsuas yog 70-100 meters ntawm 100G nrog SR4 optics. Qhov kev sib raug zoo no yog qhov tseem ceeb: tsis txhob xaiv fiber ntau los ntawm nws lub cev ntev yam tsis tau kuaj xyuas cov ntaub ntawv tus nqi.
Hauv kev xyaum, tus kws tsim kho kev txhim kho lub hauv paus tsev kawm ntawv rov qab los ntawm 10G mus rau 100G feem ntau yuav pom tias OM3 uas twb muaj lawm khiav ntawm 200-300 meters tsis tsim nyog lawm. Txawm hais tias qib fiber ntau xav tau kev hloov kho dua tshiab, lossis tus qauv transceiver yuav tsum hloov mus rau ib qho kev xaiv - hom xws li 100GBASE-DR lossis 100GBASE-LR.
Transceiver Hom thiab Wavelength
Lub optical module feem ntau txiav txim siab qhov kev ua tau zoo nyob deb ntau dua li qhov cable nws tus kheej. SR (luv-reach), LR (ntev-reach), DR, FR, ER thiab ZR optics yog txhua tus tsim los rau cov hnab ntawv sib txawv.
Piv txwv li, 100GBASE-SR4 transceiver yog luv luv- ncav cuag ntau hom kev daws teeb meem uas txhawb nqa txog 70 m tshaj OM3 thiab 100 m tshaj OM4 sivMPO connectors. 100GBASE-LR module dhau ib zaug- hom fiber ntau txhawb 10 km. ER thiab ZR chav kawm optics txuas mus rau 40 km thiab 80 km feem. Cov ntaub ntawv transceiver yeej ib txwm yog qhov chaw tso cai rau kev ntsuas kev deb.
Connector, Splice thiab Patch Vaj Huam Sib Luag Poob
Txhua connector, adapter, splice thiabthaj vaj huam sib luagntxiv qhov poob. Qhov ntev thiab ntau txoj hauv kev channel, ntau qhov kev poob no ntau ntxiv.
Ib qho luv luv txuas nrog ntau thaj vaj huam sib luag tuaj yeem ua tsis tiav txawm tias qhov ntev ntawm cable nyob rau hauv qhov kev ncua deb tshaj plaws. Lub caij no, qhov txuas ntev dua nrog cov khoom sib txuas huv, qis - poob fusion splices thiab kev sim kom raug tuaj yeem ua tau zoo. Raws li covANSI/TIA-568.3 txheem, connector poob peev nyiaj yuav tsum suav txog li 0.75 dB ib khub niam txiv, txawm hais tias zoo - ua Hoobkas patchcords feem ntau tuaj zoo hauv qab 0.3 dB.
Txuas Cov Nyiaj Txiag thiab Cov Txais Kev Pom Zoo
Ib qhov txuas fiber ntau ua haujlwm tsuas yog tias muaj lub zog kho qhov muag txaus mus txog lub receiver. Cov peev nyiaj sib txuas yog qhov sib txawv ntawm lub tshuab xa hluav taws xob tso tawm hluav taws xob thiab qhov tsawg kawg nkaus txais qhov rhiab heev. Ib qho yooj yim formula:
Muaj cov kab txuas txuas=Transceiver fais fab nyiaj txiag − fiber ntau attenuation − connector poob − splice poob − kev ruaj ntseg margin
Rau 10GBASE-SR txuas, cov peev nyiaj kho qhov muag raug nyob ib puag ncig 6.1 dB. Yog tias 300-meter OM3 khiav qhia txog kwv yees li 1.05 dB ntawm fiber ntau attenuation (ntawm 3.5 dB / km) thiab koj muaj ob qhov sib txuas sib txuas ntxiv 0.6 dB tag nrho, ntxiv rau 1 dB kev nyab xeeb npoo, koj cov npoo seem yog li 3.45 dB - xis nyob. Ntxiv ob lub thaj ntau ntxiv (lwm 0.6 dB txhua) thiab cov npoo tau nruj dua. Qhov no yog vim li cas xam qhov txuas pob nyiaj siv tseem ceeb, tshwj xeeb tshaj yog nyob rau ntev lossis ntau txoj kev khiav.
Installation Zoo thiab Khoov Radius
Kev teeb tsa tsis zoo tuaj yeem ua kom luv luv ntawm qhov ua tau zoo ntawm txhua qhov txuas fiber ntau. Tight khoov, qias neeg connector kawg lub ntsej muag, ntau rub nro, tsis zoo splicing thiab mismatched connectors tag nrho ua rau poob. Ib txwm tshuaj xyuas thiab ntxuav cov connectors ua ntej mating, ua raws li cov chaw tsim tshuaj paus qhov tsawg kawg nkaus khoov vojvoog uas yuav tsum tau, thiab sim cov ntsia txuas nrog ib tug optical poob xeem teeb. Rau cov kev coj ua zoo tshaj plaws, saib pebfiber optic cable installation daim ntawv qhia.
Tib -Mode Fiber Distance
Tib hom - hom fiber ntau yog qhov kev xaiv tus qauv rau qhov ntev - nrug thiab siab - bandwidth txuas. Nws ua haujlwm hauv kev sib tham hauv xov tooj, FTTH kev xa tawm, cov pob txha hauv tsev kawm ntawv, cov hlua metro, cov ntaub ntawv chaw sib cuam tshuam thiab kev lag luam qaum qaum cabling.
Vim li cas Ib Leeg -Mode Fiber txhawb nqa ntev dua
Tib hom - hom fiber ntau nqa ib hom kev nthuav tawm tseem ceeb los ntawm nws cov tub ntxhais 9 µm, uas tshem tawm cov qauv kev sib cais tag nrho. Nws yog feem ntau optimized rau 1310 nm thiab 1550 nm wavelengths. Ntawm 1310 nm, OS2 ib leeg- hom fiber ntau muaj qhov ntsuas qhov ntsuas ntawm 0.35 dB / km, thiab ntawm 1550 nm nws poob mus rau thaj tsam 0.22 dB / km. Muab piv nrog cov multimode fiber ntau 3.5 dB / km ntawm 850 nm - kwv yees li kaum npaug siab dua ib mais. Qhov sib txawv tseem ceeb hauv kev txo qis no yog vim li cas ib qho - hom fiber ntau dominates rau txhua yam dhau luv - mus txog cov ntawv thov.
Common Single-Mode Fiber Distance Piv txwv
Cov lus hauv qab no qhia tau hais tias ib leeg ib leeg -mode Ethernet optics thiab lawv qhov kev sib tw tshaj OS2 fiber ntau. Cov nuj nqis no yog raws li tus qauv transceiver specifications los ntawm IEEE 802.3 Ethernet cov qauv thiab cov ntaub ntawv muag khoom.
| Daim ntawv thov | Hom Fiber | Common Reach |
|---|---|---|
| 1000BASE-LX | OS2 single-mode | 10km ua |
| 10GBASE-LR | OS2 single-mode | 10km ua |
| 10GBASE-ER | OS2 single-mode | 40km ua |
| 100GBASE-DR | OS2 single-mode | 500 m |
| 100GBASE-FR | OS2 single-mode | 2km ua |
| 100GBASE-LR | OS2 single-mode | 10km ua |
| 100G ER / ZR chav kawm optics | OS2 single-mode | 40-80 km ib |
| 400GBASE-DR4 | OS2 single-mode | 500 m |
| 400GBASE-FR4 | OS2 single-mode | 2km ua |
Ib txwm paub meej tias qhov deb npaum li cas hauv cov ntaub ntawv transceiver rau koj qhov kev xa tawm tshwj xeeb. Cov no yog cov ntaub ntawv hais txog kev npaj, tsis tau lees paub qhov txwv rau txhua qhov kev teeb tsa.
Tib -Hom Fiber puas tuaj yeem siv rau qhov luv luv?
Yog lawm. Ntau lub chaw cov ntaub ntawv niaj hnub no nruab ib qho -mode infrastructure txawm tias luv luv lossis nruab nrab txuas los ua kom yooj yim rau kev hloov kho yav tom ntej. Ib qho - hom qaum qaum tuaj yeem txav los ntawm 10G mus rau 100G mus rau 400G los ntawm kev sib pauv transceivers - tsis tas yuav rov ua dua.
Txawm li cas los xij, rau ib qho luv luv heev - hom txuas nrog siab - lub hwj chim optics, tus txais yuav overload. Ib co transceiver datasheets qhia qhov tsawg kawg nkaus txuas ntev los yog xav tau ib tug optical attenuator rau kev sib txuas luv dua li ib qho kev ncua deb. Piv txwv li, qee qhov 10GBASE-ER modules xav tau 5 dB attenuator rau kev sib txuas hauv qab 20 km.
Multimode Fiber nrug
Multimode fiber ntau yog siv dav rau luv luv- mus txog kev sib txuas hauv cov chaw zov me nyuam, cov tsev lag luam, cov khoom siv thiab cov chaw hauv tsev kawm ntawv uas khiav nyob hauv ob peb puas meters.
Vim li cas Multimode Fiber Shorter -Reach
Vim hais tias multimode fiber ntau tso cai rau ntau txoj kev teeb pom kev los ntawm nws qhov loj dua 50 µm core, cov teeb liab kis tawm mus deb. Qhov no modal dispersion txwv ob qho tib si bandwidth thiab ncav cuag, thiab cov nyhuv tau zuj zus tuaj ntawm qhov nrawm dua. CovOM fiber ntau qib(OM1 txog OM5) sawv cev nce qib ntawm modal bandwidth, uas yog vim li cas siab dua -qib multimode fiber txhawb kev ncua ntev ntawm cov ntaub ntawv ceev dua.
OM1, OM2, OM3, OM4 thiab OM5 Txheej txheem cej luam
| Hom Fiber | Core Size | Hom Jacket Xim | Hom kev siv |
|---|---|---|---|
| OM 1 | 62.5/125 µm | Txiv kab ntxwv | Legacy multimode networks (feem ntau dhau mus) |
| OM 2 | 50/125 µm | Txiv kab ntxwv | Legacy 1G thiab qee qhov luv 10G txuas |
| OM 3 | 50/125 µm | Aqua | 10G, luv- ncav cuag 40G/100G cov ntaub ntawv chaw txuas |
| OM 4 | 50/125 µm | Aqua los yog violet (erika violet) | Siab dua -kev ua tau zoo cov ntaub ntawv chaw txuas, 10G/40G/100G |
| OM 5 | 50/125 µm | Txiv qaub ntsuab | SWDM thiab xaiv cov ntawv thov dav dav multimode |
OM3 fiber ntau muaj ib tug modal bandwidth ntawm 2000 MHz ·km ntawm 850 nm, thaum OM4 nce mus txog 4700 MHz ·km ntawm tib lub wavelength. Qhov sib txawv bandwidth no ncaj qha txhais mus rau hauv ncav cuag: ntawm 10G, OM3 txhawb nqa 300 m qhov twg OM4 txhawb nqa 400 m. TIA tus qauv OM4 fiber ntau specifications los ntawmANSI/TIA-568.3, thiab covEthernet Alliance tau lees paubqhov 400-meter 10GbE nrug rau OM4 thaum IEEE muab tso rau hauv tus qauv 802.3.
Common Multimode Fiber Distance Piv txwv
Multimode OM3 thiab OM4 fiber ntau nrug sib piv rau 10G 40G thiab 100G txuas
| Ceev / Optic Hom | OM 3 | OM 4 | Sau ntawv |
|---|---|---|---|
| 10GBASE-SR | Mus txog 300 m | Mus txog 400 m | Duplex LC, 850nm, IEEE 802.3ae |
| 25GBASE-SR | Mus txog 70 m | Mus txog 100 m | Duplex LC, 850nm |
| 40GBASE-SR4 | Mus txog 100 m | Mus txog 150 m | MPO / MTP parallel, 850 nm |
| 40 G BIB | 100 m | 150 m | Duplex LC, nyob ntawm transceiver |
| 100GBASE-SR4 | Mus txog 70 m | Mus txog 100 m | MPO/MTP parallel, 850 nm |
| 100G BiDi / SR1.2 | 70 m | 100 m | Qee qhov kev txhawb nqa txuas ntxiv OM5 ncav cuag |
Qhov kev ncua deb no suav tias cov khoom sib txuas huv, kev teeb tsa kom raug thiab cov qauv txuas tsis tau nyiaj txiag. Hauv kev xa tawm tiag tiag, kev sib kis kab mob sib kis, cov ntsiab lus ntxiv thaj chaw lossis kev khoov nruj tuaj yeem txo qhov siv tau nyob hauv qab nominal qhov tseem ceeb.
Puas yog OM5 Ib txwm mus deb dua OM4?
Tsis tas li. OM5 tau tsim los txhawb nqa luv wavelength division multiplexing (SWDM) los ntawm kev muab cov kev qhia bandwidth ntawm cov wavelengths ntxiv tshaj 850 nm (tshwj xeeb yog 883 nm thiab 953 nm). Nyob rau hauv cov qauv SR daim ntawv thov uas tsuas yog siv 850 nm, OM5 yuav tsis muab qhov muaj txiaj ntsig zoo tshaj OM4. Qhov txiaj ntsig ntawm OM5 tshwm sim feem ntau thaum lub transceiver yog tsim los siv SWDM peev xwm - piv txwv li, qee yam 100G thiab 400G SWDM modules uas txo cov fiber ntau suav los ntawm kev xa mus rau ntau lub wavelengths.
Fiber Optic Cable Distance Chart los ntawm Daim Ntawv Thov
Cov lus hauv qab no qhia txog kev npaj siv tswv yim rau cov xwm txheej xa mus. Nws tsis yog ib qho kev hloov pauv rau qhov kev sib txuas kom zoo ntawm kev suav nyiaj txiag, tab sis nws pab nqaim txoj cai fiber ntau thiab txuas rau txhua qhov xwm txheej.
| Scenario | Pom zoo Fiber | Common Connector | Hom Distance Range |
|---|---|---|---|
| Server hloov, tib lub khib | DAC, AOC, OM3/OM4 lossis OS2 | SFP / QSFP direct attach, LC | 1-7 m (DAC), mus txog 30 m (AOC) |
| Data center kab lossis chav txuas | OM3/OM4 or OS2 | LClos yog MPO/MTP | 10–400 m |
| 10G enterprise qaum | OM3/OM4 or OS2 | LC duplex | 100 m txog 10 km |
| 40G/100G luv- mus txog qhov chaw khaws ntaub ntawv | OM3 / OM4 nrog MPO / MTP lossis duplex BiDi | MPO/MTPlos yog LC | 70–150 m |
| Campus qaum | OS2 single-mode | LC | 1-10 km + |
| Telecom / FTTH / metro txuas | OS2 single-mode | SC, LC lossis hardened connector | 10-80km + |
Tib -Mode vs Multimode Fiber nrug: Yuav txiav txim siab li cas
Thaum Multimode Fiber ua rau kev nkag siab
Multimode yog ib qho kev xaiv muaj zog thaum qhov kev sib txuas nyob hauv ib qho chaw hauv cov ntaub ntawv, lub tsev lossis chav tsev khoom siv thiab qhov kev ncua deb yog luv txaus rau SR optics. Yog tias cov txheej txheem uas twb muaj lawm yog OM3 lossis OM4 thiab qhov kev xav tau ceev tam sim no haum nyob rau hauv ntau qhov kev txwv deb, tsis muaj laj thawj tam sim los hloov nws. Multimode transceivers (SR chav kawm) feem ntau tsis tshua kim rau ib qhov chaw nres nkoj tshaj ib qho - hom optics, thiab fiber ntau nws tus kheej raug nqi tsawg dua rau ib lub 'meter' kom xaus.
Ib qho xwm txheej tshwm sim: ib lub chaw cov ntaub ntawv nrog rau sab saum toj - ntawm - khib hloov txuas mus rau qhov kawg - ntawm - kab sib sau ua ke hla dhau ntawm 20-50 meters. OM4 fiber ntau nrog 10G lossis 25G SR optics tswj qhov no yooj yim, thiab tus nqi ntawm ib qhov txuas yog qis dua ib qho - lwm hom.
Thaum Tib -Mod Fiber yog qhov kev xaiv zoo dua
Tib hom - hom ua rau kev txiav txim siab thaum qhov txuas ntau tshaj qhov sib tw, thaum koj xav tau ayav tom ntej -cov ntaub ntawv pov thawjrau 100G lossis 400G hloov khoom dua tshiab, lossis thaum tsim tsev kawm ntawv, metro, FTTH lossis telecom infrastructure. Tus nqi cable sib txawv ntawm OS2 ib zaug -hom thiab OM4 multimode yog qhov me me, thiab ib qho - hom transceivers tau nqis nqis ntau heev. Rau ib qho kev txhim kho pob txha tshiab uas yuav nyob hauv qhov chaw rau 10–15 xyoo, ib hom - feem ntau yog qhov kev nyab xeeb ntev dua - lub sij hawm peev.
Ib qho qauv xa tawm: ib lub tsev kawm ntawv network txuas rau 6 lub tsev nyob deb ntawm 500 m txog 3 km. OS2 ib leeg -mode trunk cables nrogLC patch cordsntawm txhua qhov kawg muab cov pob txha caj qaum uas pib ntawm 10G thiab tuaj yeem txav mus rau 100G lossis 400G los ntawm kev hloov pauv cov qauv - yam tsis tau kov cov kab cog.
Rau Data Centers
OM3 thiab OM4 tseem yog lub neej ntawd rau luv luv - mus txog qhov txuas, tshwj xeeb tshaj yog nrog SR optics. However, many new high-density data center designs are adopting OS2 single-mode for spine-leaf architectures to support 400G migration paths. Qhov kev hloov pauv tau pom tshwj xeeb hauv cov cheeb tsam hyperscale qhov twg 400GBASE-DR4 thiab 400GBASE-FR4 dhau ib zaug- hom fiber ntau tau dhau los ua qauv.
Rau cov tuam tsev Enterprise thiab Campus Networks
Hauv ib lub tsev, OM3 lossis OM4 yuav txaus yog tias khiav qis dua 300 meters thiab 10G ua tau raws li qhov tam sim no thiab ze rau - lub sijhawm ceev ceev. Rau lub tsev-rau- tsev txuas lossis cov pob txha hauv tsev kawm ntawv, OS2 ib leeg- hom feem ntau yog qhov kev xaiv nyab xeeb dua vim tias nws ua haujlwm ntev dua thiab nrawm dua yam tsis tau rov ua dua.
Rau Telecom thiab FTTH
Tib - hom fiber ntau yog tib txoj kev xaiv rau kev sib txuas lus thiab FTTH tes hauj lwm. Cov ntawv thov no yuav tsum muaj qhov qis qis dua nyob rau qhov ntev, muaj peev xwm ua tau zoo thiab txhawb nqa cov thev naus laus zis xws li GPON, XGS-PON thiab 50G-PON. Cov infrastructure feem ntau sivPLC splittersthiabfiber ntau terminal thawvnrog rau ib qho - hom kab hluav taws xob.
Yuav Ua Li Cas Xaiv Txoj Cai Fiber Optic Cable rau Koj Qhov Ncauj
Kauj Ruam 1: Ntsuas Txoj Kev Ntev Ntev
Tsis txhob ntsuas qhov ncaj - kab nrug ntawm ob lub cuab yeej. Xws li cable routing los ntawm cov tais, txee, thaj vaj huam sib luag, phab ntsa qhov hluav taws xob, risers thiab kev pabcuam loops. Hauv ntau lub tsev, txoj kev cable tiag tiag yog 20-40% ntev dua hauv pem teb - phiaj xwm deb. Ntxiv cov paj tsim nyog - feem ntau 10% - rau yav tom ntej rerouting thiab tu slack.
Kauj ruam 2: Paub meej tias qhov yuav tsum tau ceev tam sim no thiab yav tom ntej
Ib lub xov tooj uas txhawb nqa 10G hnub no yuav tsis txhawb 100G ntawm tib qhov deb tag kis. Nug peb lo lus nug ua ntej xaiv fiber ntau: Kuv xav tau dab tsi ceev tam sim no? Kuv yuav xav tau dab tsi ceev hauv peb mus rau tsib xyoos? Puas yuav cog cov kab no rov qab siv rau kev hloov kho yav tom ntej? Yog tias lo lus teb rau lo lus nug thib peb yog yog, ntsoos mus rau OS2 ib zaug - hom lossis yam tsawg kawg nkaus OM4 rau kev khiav ntau hom.
Kauj ruam 3: Ua raws li tus qauv Transceiver
Xyuas seb koj cov cuab yeej siv SR, LR, DR, FR, ER, ZR, BiDi, CWDM, PSM lossis lwm tus qauv kho qhov muag. Tib fiber ntau cable txhawb kev sib txawv nrog cov modules sib txawv. Piv txwv li, OS2 ib leeg - hom kev khiav ntawm 2 km ua haujlwm rau 100GBASE-FR (rated rau 2 km) tab sis luv luv ntawm 100GBASE-LR txwv (10 km) - ob qho tib si siv OS2, tab sis lub transceiver txiav txim siab txog qhov ua tau zoo thiab tus nqi.
Kauj Ruam 4: xam qhov Link Budget
Ntxiv tag nrho cov kev xav tau poob hauv channel:
Fiber attenuation: kwv yees li 3.5 dB / km rau multimode ntawm 850 nm, los yog 0.35 dB / km rau ib zaug - hom ntawm 1310 nm. Connector poob: feem ntau 0.2-0.5 dB ib khub niam txiv rauLC los yog SC connectors. Splice poob: feem ntau 0.1 dB lossis tsawg dua rau qhov zoo fusion splice. Patch vaj huam sib luag thiab adapter poob: txhua qhov txuas ntxiv txuas ntxiv poob. Engineering kev nyab xeeb margin: feem ntau 1-3 dB nyob ntawm daim ntawv thov.
Tom qab ntawd sib piv tag nrho cov kev poob nrog lub transceiver qhov teev cov peev nyiaj kho qhov muag. Yog tias cov npoo nyias nyias, txo cov khoom sib txuas, txhim kho qib fiber ntau, lossis xaiv lub transceiver nrog cov peev nyiaj loj dua.
Kauj ruam 5: Tawm Margin
Tsis txhob tsim txoj cai ntawm qhov siab tshaj plaws. Connector kawg fim degrade dua rov mating cycles, plua plav accumulates, thiab yav tom ntej patching tej zaum yuav ntxiv cov ntsiab lus sib txuas. Ib qhov txuas uas dhau los ua haujlwm nrog 0.5 dB ntawm cov npoo yog qhov txuas tos kom tsis ua tiav tom qab lub qhov rais kho tom ntej. Teem kom tsawg kawg 2-3 dB ntawm lub taub hau ntawm cov pob txha caj qaum tseem ceeb.
Feem ntau yuam kev thaum npaj Fiber Optic Cable nrug
Xaiv Fiber nkaus xwb los ntawm Jacket Xim
Jacket xim yog pab tau rau kev qhia ceev ceev - aqua feem ntau txhais tau tias OM3 lossis OM4, daj feem ntau txhais tau tias OS2, txiv qaub ntsuab feem ntau txhais tau tias OM5. Tab sis "feem ntau" tsis yog "ib txwm." Qee cov tuam txhab lag luam siv tsis yog - xim qauv, thiab cov kab qub qub yuav tsis ua raws li cov lus pom zoo tam sim no. Ib txwm txheeb xyuas qhov ntsuas kab ntawv luam tawm, cov cim fiber ntau thiab cov ntaub ntawv xeem ua ntej xav tias qib fiber ntau raws li xim.
Tsis quav ntsej Connector thiab Patch Panel Poob
Ib qhov txuas nrog rau 6 tus khub sib txuas sib txuas tuaj yeem tshaj qhov poob nyiaj txawm tias nyob ntawm 50-meter cable khiav. Txhua tus ntoo khaub lig ntxiv- txuas lossis thaj vaj huam sib luag ntxiv poob. Nyob rau hauv ib puag ncig high-density nrog ntau thaj vaj huam sib luag ntawm qhov hloov chaw nres nkoj thiab cov khoom siv kawg, cov kev poob no tau nrawm nrawm. Npaj tus naj npawb ntawm cov ntsiab lus sib txuas ntawm lub sijhawm tsim, tsis yog tom qab kev teeb tsa.
Kho qhov ntev siab tshaj plaws raws li kev pom zoo
Qhov siab tshaj plaws nyob deb ntawm cov ntaub ntawv transceiver suav tias yog cov khoom sib txuas huv, tsis muaj qhov sib txuas ntxiv, lub Hoobkas -qib fiber ntau thiab ib puag ncig tshwj xeeb. Kev teeb tsa tiag tiag tsis tshua muaj qhov sib xws li cov kev xav. Ib txwm kho qhov siab tshaj plaws raws li ib thaj tsam sab saud, tsis yog lub hom phiaj tsim.
Kev sib xyaw tsis sib xws Connectors lossis Polarity
MPO/MTP linksxav tau qhov tseeb polarity, fiber ntau suav thiab connector poj niam txiv neej. Ib qho kev sib txuas ntawm lub cev tseem tuaj yeem ua tsis tau lossis qhia qhov yuam kev me ntsis yog tias qhov polarity tsis raug. Tus qauv TIA-568.3 txhais ntau txoj kev polarity (Hom A, Hom B, Hom C thiab hom U hom tshiab), thiab sib xyaw ua ke tsis raug yog ib qho ntawm feem ntau ua rau ua tsis tiav 40G thiab 100G parallel optic txuas.
Tsis nco qab kev hloov kho ceev yav tom ntej
Yog tias koj tab tom txhim kho qaum qaum cabling uas yuav nyob rau hauv qhov chaw rau kaum xyoo, xav tshaj qhov hloov pauv tam sim no. Rub cov fibers tshiab los ntawm txoj kev uas twb muaj lawm yog kim thiab cuam tshuam. Xaiv OM4 es tsis txhob OM3, lossis OS2 es tsis txhob siv ntau hom, tus nqi qis dua ntawm kev teeb tsa tab sis tuaj yeem txuag cov nuj nqis tseem ceeb tom qab. Ntau lub koom haum uas tau teeb tsa OM3 rau 10G tam sim no ntsib tus nqi hloov kho dua tshiab thaum lawv tsiv mus rau 100G, qhov twg OM3 ncav cuag 70 meters nrog SR4 optics.
FAQ Txog Fiber Optic Cable nrug
Q: Ntev npaum li cas thiaj Tau Ib Leeg -Hom Fiber Optic Cable khiav?
A: Ib leeg- hom fiber ntau txhawb txhua yam los ntawm kev txuas luv mus rau qhov deb tshaj 80 km, nyob ntawm qhov transceiver. Common Ethernet ncav cuag 10 km (LR chav kawm), 40 km (ER chav kawm) thiab 80 km (ZR chav kawm). Nrog optical amplifiers, ib leeg - hom fiber ntau tuaj yeem ncav cuag ntau pua mais hauv kev siv xov tooj cua.
Q: Ntev npaum li cas tuaj yeem Multimode Fiber Optic Cable khiav?
A: Multimode fiber ntau feem ntau npog ob peb lub kaum rau ob peb puas meters, nyob ntawm qib fiber ntau thiab ceev. Ntawm 10G, OM3 nce mus txog 300 m thiab OM4 nce mus txog 400 m. Ntawm 100G nrog SR4 optics, kev ncua deb mus rau 70 m (OM3) lossis 100 m (OM4). Cov ntawv thov 1G qub tuaj yeem khiav deb dua - mus txog 550 m ntawm OM3 - vim tias cov ntaub ntawv qis dua tsis tshua muaj kev cuam tshuam rau modal dispersion.
Q: Ntev npaum li cas rau 10G Fiber?
A: Rau 10G SR multimode txuas, OM3 txhawb nqa txog 300 m thiab OM4 txog 400 m ib tus qauv IEEE 802.3ae. Rau 10G LR ib qho - hom kev sib txuas, 10 km yog tus qauv ncav cuag . 10GBASE-ER txuas mus rau 40 km, thiab 10GBASE-ZR (tus neeg muag khoom- txhais, tsis yog IEEE- qauv) tuaj yeem ncav cuag 80 km nrog optics.
Q: Puas yog OM4 zoo dua OM3 rau kev deb?
A: Yog. OM4 feem ntau txhawb nqa ntau hom kev ncav cuag ntev dua OM3 vim nws qhov siab dua modal bandwidth (4700 MHz·km vs 2000 MHz·km ntawm 850 nm). Ntawm 10G, qhov sib txawv yog 300 m vs 400 m. Ntawm 40G SR4, nws yog 100 m vs 150 m. Rau kev sib piv kom ntxaws, saib peb qhov kev sib piv OM3 vs OM4.
Q: Kuv puas tuaj yeem txuas ib leeg -Hom Fiber rau Multimode Fiber ncaj qha?
A: Qhov no tsis pom zoo thiab yuav tsis ua haujlwm zoo rau feem ntau. Tib - hom fiber ntau muaj 9 µm core thaum multimode fiber ntau muaj 50 µm lossis 62.5 µm core. Kev sib txuas lub teeb los ntawm cov tub ntxhais loj dua rau hauv ib qho me me ua rau lub teeb liab ploj, thiab qhov tsis sib xws hauv cov lej aperture ua rau muaj teeb meem ntxiv. Siv hom fiber ntau qhov kawg mus rau qhov kawg, thiab siv media converters los yog hom-txheej kho cov hlua khi tsuas yog qhov tshwj xeeb txhawb los ntawm tus neeg muag khoom transceiver.
Q: Puas yog Fiber Cable ntev dua ib txwm txhais tau tias tsis muaj teeb meem ntxiv?
A: Yog, fiber ntau attenuation nce linearly nrog nrug. Tab sis nyob deb tsuas yog ib feem ntawm tag nrho cov channel poob. Cov Connectors, splices, khoov thiab thaj vaj huam sib luag feem ntau ua rau poob ntau tshaj li ob peb puas meters ntawm fiber ntau. Ib qhov txuas 100-meter nrog plaub qhov sib txuas sib txuas tuaj yeem muaj qhov poob siab dua li 500-meter txuas nrog tsuas yog ob qhov txuas thiab qhov sib txuas huv.
Q: Dab tsi fiber ntau kuv yuav tsum xaiv rau 100G?
A: luv luv - ncav cuag 100G txuas hauv qab 100 meters, OM3 lossis OM4 multimode nrog SR4 lossis BiDi optics ua haujlwm zoo. Rau 500 m, siv 100GBASE-DR dhau OS2 tib{11}} hom. Rau 2 km, 100GBASE-FR. Rau 10 km, 100GBASE-LR. Rau 40 km lossis ntau dua, ER lossis ZR chav kawm optics tshaj OS2 tib hom - yuav tsum tau ua.
Q: Kuv Yuav Ua Li Cas Sau Cov Nyiaj Txiag Fiber Txuas?
A: Pib nrog lub transceiver cov nyiaj siv hluav taws xob tau teev tseg (tso zis tso tawm rho tawm qhov tsawg kawg nkaus txais qhov rhiab heev). Tom qab ntawd rho tawm: fiber ntau attenuation (ntev × attenuation coefficient), connector poob (tus naj npawb ntawm mated khub × poob ib khub), splice poob, thiab ib tug kev nyab xeeb margin. Yog tias qhov tshwm sim zoo, qhov txuas yuav tsum ua haujlwm. Yog tias nws nyob ze xoom lossis qhov tsis zoo, koj yuav tsum tau txo qis lossis xaiv lub transceiver nrog lub zog siv nyiaj ntau dua.
Q: Yuav ua li cas yog hais tias ib tug Fiber Txuas tshaj qhov Transceiver qhov kev ncua deb?
A: Qhov txuas tuaj yeem ua rau muaj qhov yuam kev ntau ntxiv, kev sib txuas tsis sib xws lossis ua tsis tiav. Txawm hais tias qhov txuas zoo nkaus li ua haujlwm pib, nws yuav tsis muaj cov npoo txaus los tswj cov kev sib txuas ntawm cov laus, qhov kub thiab txias hloov pauv lossis ntxiv patching. Kev khiav hauj lwm dhau ntawm qhov ntsuas nyob deb voids lub transceiver qhov kev ua tau zoo lav thiab feem ntau suav hais tias yog qhov kev teeb tsa tsis txhawb nqa.
Q: Puas yog OM5 Tsim Nyog Rau Cov Ntaub Ntawv Chaw Cabling?
A: OM5 tsim nyog xav txog yog tias koj npaj yuav xa SWDM-raws li transceivers uas siv ntau lub wavelengths los ua kom muaj peev xwm ntau dua fiber ntau. Rau cov qauv SR daim ntawv thov ntawm 850 nm, OM5 tsis muaj qhov tseem ceeb ntawm qhov zoo dua OM4. Qhov kev txiav txim siab nyob ntawm seb koj qhov kev qhia tshwj xeeb transceiver muaj xws li SWDM modules.
Xaus
Fiber optic cable nrug nyob ntawm qhov txuas tag nrho - fiber ntau hom, tus qauv transceiver, cov ntaub ntawv tus nqi, connector suav thiab tag nrho cov channel poob txhua qhov teeb meem. Tsis muaj ib lo lus teb rau "yuav khiav deb npaum li cas" yam tsis paub txog cov kev hloov pauv no.
Rau cov ntaub ntawv luv luv lossis kev sib txuas hauv tsev, OM3 thiab OM4 multimode fiber ntau ua ke nrog SR-chav kawm optics tseem siv tau thiab raug nqi- zoo. Rau cov pob txha hauv tsev kawm ntawv, kev sib txuas lus, FTTH thiab txhua qhov kev xa tawm uas yuav tsum tau hloov kho kom nrawm dua yav tom ntej, OS2 ib leeg - hom fiber ntau yog qhov kev xaiv ntev dua -.
Ua ntej yuav khoomfiber ntau cables, lub cev cables los yog transceivers, paub meej tias qhov tseeb txoj kev deb, yuav tsum tau ceev, transceiver standard, connector hom thiab fiber ntau ua ke. Tom qab ntawd xam cov peev nyiaj txuas. Cov txheej txheem ntawd - tsis yog ib qho kev qhia tshwj xeeb - yog qhov ua kom ruaj khov, hloov kho dua tshiab - npaj network.
