Ib txoj hlua fiber ntau yog ib txoj kev sib kis ntawm fiber ntau optic uas nqa ob qho tib si xa tawm thiab tau txais kev khiav tsheb ntawm ib qho khoom siv kho qhov muag es tsis txhob siv ob qho tib si. Hauv Ethernet tes hauj lwm nws yuav luag ib txwm ua nrog BiDi transceivers, qee zaum hu ua bidirectional lossis ib zaug -fiber SFP modules.
Yog tias koj xav tau cov qauv luv luv: ib txoj hlua fiber ntau ua rau kev txiav txim siab thaum cov cores fiber ntau tsis tshua muaj, thaum rub cov cable tshiab los ntawm cov kav dej los yog thoob plaws lub tsev kawm ntawv yog kim, lossis thaum cov hlua khi hlua khi tau tawg lawm. Nws tsis yog qhov zoo tshaj plaws rau lub hom phiaj - tshiab tsim cabling tsim, thiab nws rau txim rau ib pab neeg uas tsis ua tib zoo sib xws wavelengths, optical budget, thiab hloov compatibility ua ntej xaj.
Cov lus qhia no taug kev los ntawm kev siv thev naus laus zis ua haujlwm li cas ntawm cov fiber ntau, thaum xaiv nws dhau duplex fiber ntau, qhov uas nws nyiam ua tsis tiav hauv daim teb, thiab kev kuaj xyuas tseeb tus kws ua haujlwm yuav tsum khiav ua ntej yuav BiDi SFP lossis SFP + khub.
Dab tsi yog Single Strand Fiber?
Ib leeg strand fiber, qee zaum hu ua ib leeg -fiber kis tau tus mob los yog simplex fiber kis tau tus mob, siv ib tug optical fiber nqa tsheb nyob rau hauv ob qho tib si cov lus qhia tib lub sij hawm.
Ib qho kev sib txuas ib txwm siv fiber ntau siv ob txoj hlua: ib qho fiber ntau xa mus, lwm qhov tau txais. Ib qho kev sib txuas ntawm fiber ntau hloov cov khub nrog ib txoj hlua los ntawm kev sib cais ob qho kev qhia nyob rau hauv lub wavelength domain es tsis txhob ntawm spatial domain. Nrog rau txoj cai transceivers ntawm txhua qhov kawg, tag nrho -duplex Ethernet txuas khiav hla ib lub cev fiber ntau.
Cov qauv luam tawm classic yog 1000BASE-BX-D / U interface txhais raws li IEEE 802.3ah: ib kawg xa ntawm 1490 nm thiab tau txais ntawm 1310 nm, thaum qhov kawg xa tawm ntawm 1310 nm thiab tau txais ntawm 1490 nm. Koj tuaj yeem nyeem cov txheej txheem ntawm lub cev hauv qab ntawm lubIEEE 802.3 Ethernet txuj.
Tib Strand Fiber vs Simplex Fiber vs Duplex Fiber
Peb cov lus no tau sib xyaw tas li, tshwj xeeb tshaj yog nyob rau hauv daim pib yuav khoom.
- Simplex fiber ntauhais txog ib lub cable uas lub cev muaj ib qho fiber ntau strand, feem ntau nrog ib leeg LC, SC, lossis FC connector ntawm txhua qhov kawg.
- Duplex fiber ntauyog hais txog ib lub cable uas muaj ob txoj hlua fiber ntau, feem ntau raug txiav ua ib qho txuas txuas.
- Ib txoj hlua fiber ntaupiav qhia txog txoj kev sib kis: ib txoj hlua nqa ob qho kev qhia, tsis hais seb lub hauv paus cable yog technically ib qho yooj yim patch qaum lossis ib txoj hlua ntawm lub cev loj.
Yog li ib txoj hlua fiber ntau txuas yuav luag ib txwm caij ntawm ib qho yooj yim patch qaum, tab sis lub sij hawm "simplex" piav txog lub cable, thaum "ib leeg strand fiber" piav qhia txog cov tswv yim kho qhov muag.
Ib leeg Strand Fiber ua haujlwm li cas
BiDi Transmission thiab WDM Hauv Module
Feem ntau ib leeg fiber ntau Ethernet txuas siv BiDi kis tau tus mob. BiDi luv luv rau bidirectional. Tsis txhob cais ob txoj kev qhia los ntawm kev muab txhua qhov nws tus kheej fiber ntau, BiDi optics cais lawv los ntawm wavelength siv me me.wavelength faib multiplexinglim hauv lub transceiver. Cov lim ntawd, feem ntau hu ua diplexer, sib txuas cov laser tawm thiab cov teeb liab tuaj ntawm ib qho chaw sib koom.
Ib qho piv txwv zoo li no:
| Xaus | TX wavelength | RX wavelength |
|---|---|---|
| A | 1310nm ua | 1490nm ua |
| B | 1490nm ua | 1310nm ua |
Tias yog vim li cas ib qho kev sib txuas fiber ntau tsis tuaj yeem siv ob qhov zoo ib yam: cov diplexers ob leeg xav kom xa mus rau tib xim ntawm lub teeb, thiab qhov txuas yuav tsis tuaj. Ib qho kev sib sib zog nqus ntawm diplexer thiab laser kev npaj yog them rau hauv qhov noBiDi transceiver technology piav qhia.
Common BiDi Wavelength Pairs
Txawv speeds thiab ncav cuag siv sib txawv wavelength khub. Cov lus hauv qab no qhia txog kev sib txuas cov engineers feem ntau ntsib ntawm kev lag luam thiab nkag mus rau hauv tes hauj lwm.
| Ceev | End A (TX/RX) | End B (TX/RX) | Hom ncav cuag |
|---|---|---|---|
| 1G BiDi SFP | 1310/1550 nm | 1550 / 1310 nm | 10-40 km |
| 1G BiDi SFP | 1310/1490 nm | 1490/1310 nm | 10 km (BX-D/U) |
| 10G BiDi SFP + | 1270/1330 nm | 1330 / 1270 nm | 10-20 km |
| 10G BiDi SFP + | 1490/1550 nm | 1550 / 1490 nm | 40km ua |
| 25G BiDi SFP28 | 1270/1330 nm | 1330 / 1270 nm | 10km ua |
Module makers tsis txhua tus siv tib daim ntawv lo. Qee qhov luam tawm "BX-U" thiab "BX-D" (sab sauv thiab qis), lwm tus luam "TX1310/RX1490" ncaj qha. Kev sib xyaw cov ntawv hla cov neeg muag khoom yog ib qho ntawm qhov yuam kev yooj yim dua los ua hauv cov khoom muag, yog li nws tsim nyog tsim cov npe hauv koj lub tsev khaws khoom ua ntej xaj.
Tib Strand Fiber vs Dual Strand Fiber
Ob leeg ib leeg thiab dual strand fiber yuav khiav txhim khu kev qha Ethernet txuas thaum tsim kom raug. Qhov kev xaiv zoo yog nyob ntawm qhov tsis tshua muaj: fiber ntau, sijhawm, nyiaj txiag, lossis kev ua haujlwm nyuaj.
| Yam khoom | Ib leeg Strand Fiber | Dual Strand Fiber ntau |
|---|---|---|
| Kev siv fiber ntau | Ib txoj hlua | Ob txoj hlua |
| Hom optics | BiDi SFP / BiDi SFP + / BiDi SFP28 | Txheem duplex SFP / SFP + |
| Txuas | Simplex LC (feem ntau) | Duplex LC |
| Module pairing | A/B khub, opposite TX/RX wavelengths | Tib qauv ob qhov kawg |
| Spare module khoom | Ob SKUs (A thiab B) | Ib SKU |
| Lub ntsiab kom zoo dua | Txuag fiber ntau | Standardization, tus neeg muag khoom muaj |
| Kev pheej hmoo loj | Wavelength mismatch, receiver overload ntawm luv luv txuas | TX/RX polarity, fiber ntau mismatch |
| Zoo tshaj plaws | Tsawg fiber ntau suav, cable cog uas twb muaj lawm, xauj tsaus fiber ntau, nkag mus txuas | New builds, dense data centers, lab environments |
Xaiv BiDi thaum suav fiber ntau yog qhov txwv. Xaiv duplex thaum tsim qauv, khoom seem -qhov muaj, thiab tus neeg teb xov tooj simplicity tseem ceeb dua.
Ib leeg Strand Fiber Selection Checklist
Siv daim ntawv txheeb xyuas no ua lub rooj txiav txim siab ua ntej muab qhov kev txiav txim. Txhua kab sawv cev rau qhov xwm txheej uas tsaws ntawm lub network engineer lub rooj, nrog rau kev sib tw hu.
| Qhov xwm txheej | Pom zoo mus kom ze |
|---|---|
| Ib qho khoom seem fiber ntau, xav tau 1G lossis 10G txuas | BiDi SFP / SFP + sib phim khub |
| Tshiab data center txee tsim, ntau strands | Standard duplex SFP +, kev teeb tsa cable |
| Ib qho luv luv - hom txuas (hauv qab 1 km) nrog 10 km / 40 km module | Xyuas cov receiver overload, ntxiv fiber ntau attenuator yog xav tau |
| Unknown legacy fiber cog | Ntsuam xyuas qhov poob thiab qhov cuam tshuam ua ntej xaj optics |
| Ntau- tus neeg muag khoom hloov pauv ntawm txhua qhov kawg | Paub meej tias transceiver coding ntawm ob hnub ua ntej yuav khoom |
| Sab nraum zoov txee lossis chaw ua haujlwm | Siv kev lag luam-kub BiDi modules |
| Xav tau DOM saib xyuas thoob plaws qhov txuas | Paub meej tias DOM / DDM kev txhawb nqa ntawm ob qho tib si transceiver thiab hloov |
| Leased maub fiber ntau, tsuas yog ib txoj hlua muaj | BiDi khub nrog tsim nyog ncav cuag rau txoj kev xauj |
Thaum Ib leeg Strand Fiber yog qhov kev xaiv zoo
1. Koj muaj txwv Fiber Strands uas twb muaj lawm
Cov ntaub ntawv muaj zog tshaj plaws rau ib txoj hlua fiber ntau yog cov tsis tshua muaj fiber ntau. Ib lub tsev-rau- lub tsev txuas yuav muaj ib txoj hlua uas tsis tau siv nyob rau hauv 12- tub ntxhais riser, los yog lub tsev kawm ntawv cov kav dej tej zaum yuav puv rau ntses hauv lwm lub cable. Nrog rau ib khub BiDi sib tw, ib qho khoom seem tuaj yeem nqa qhov txuas tshiab-duplex Ethernet yam tsis muaj kev ua haujlwm hauv pej xeem.
Common scenarios qhov twg qhov no los txog:
- Enterprise tsev kawm ntawv sib txuas ntawm cov tsev ntawm cov laus risers
- Cov chaw muaj kev txwv fiber ntau hauv armored cable khiav
- Cov koom haum hauv nroog rov siv qhov chaw duct uas twb muaj lawm
- ISP nkag mus rau cov tes hauj lwm uas txhua tus neeg siv khoom noj yog luv ntawm cov hlua
- CCTV thiab kev ruaj ntseg nraub qaum ntxiv tom qab kev teeb tsa thawj zaug
- Wireless backhaul qhov twg lub ru tsev - mus rau - chaw nyob fiber ntau yog kho
2. Kev rub cov fiber ntau yog kim heev
Tus nqi transceiver tsis tshua muaj tus lej tseem ceeb ntawm qhov project. Trenching, conduit access, tsev nkag, splicing, OTDR xeem, tom qab - teev ua hauj lwm, thiab downtime feem ntau dwarf nws. Yog tias ib khub BiDi tshem tawm kev ua haujlwm hauv pej xeem, cov peev nyiaj feem ntau tsaws qis dua txawm tias cov optics lawv tus kheej raug nqi ntau dua ib qhov chaw nres nkoj dua li cov qauv duplex SFPs.
3. Koj yuav tsum tau txhim kho kev siv fiber ntau ntawm cov nroj tsuag uas twb muaj lawm
Ib leeg strand fiber tsis magically widen lub bandwidth ntawm ib tug optical channel. Qhov nws hloov pauv yog tus naj npawb ntawm lub cev strands ib qhov txuas. Nyob rau ntawm ib qho kev teeb tsa cable uas twb muaj ntau qhov kev pabcuam, tso tawm ib txoj hlua txuas txuas tuaj yeem ncua sijhawm ua haujlwm fiber ntau los ntawm xyoo.
4. Txoj Kev Txuas yog ib qho yooj yim taw tes-rau-Point
BiDi optics ci ntsa iab ntawm qhov taw tes ncaj nraim - rau - taw tes kev sib txuas: hloov mus rau hloov, hloov mus rau media converter, router rau kev nkag mus, cov chaw taws teeb rau cov tub ntxhais, lossis lub tsev A rau lub tsev B. Ib khub sib tw ntawm txoj kev huv si fiber ntau yog txhua yam nws siv.
Thaum Koj Yuav Tsum Tsis Siv Tib Strand Fiber
Ib txoj hlua fiber ntau yog ib qho cuab yeej, tsis yog lub neej ntawd. Mus txog rau dual strand fiber ntau thaum ib qho ntawm cov no muaj tseeb:
- Lub tsev kawm ntawv twb muaj ntau tshaj li cov khoom seem fiber ntau txaus
- Pab neeg ua haujlwm xav tau ib qho SKU ntawm duplex SFPs dua li ob SKUs ntawm A / B BiDi modules
- Ib qho kev kho qhov muag tshwj xeeb uas koj xav tau tsuas yog muaj nyob hauv daim ntawv duplex
- Txoj haujlwm no yog qhov tshiab siab -cov ntaub ntawv ceev ceev tsim nrog cov txheej txheem duplex cabling twb tau tsim
- Koj tsis tuaj yeem lees paub qhov kev sib tw wavelength, pob nyiaj siv kho qhov muag, txuas polish, thiab hloov coding ua ntej xa tawm
- Cov nroj tsuag fiber ntau muaj qhov cuam tshuam siab lossis tsis paub keeb kwm, qhov twg ntxiv A / B complexity yuav qeeb teeb meem
Hauv kev xa tawm, qhov tsis ua haujlwm tsis tshua muaj fiber ntau nws tus kheej. Nws yuav luag txhua qhov tsis ncaj ncees lawm A / B module khub zaum ntawm qhov tsis ncaj ncees lawm, lossis ntev - ncav cuag module siv zog ntau dhau rau hauv qhov txuas luv.
Yuav ua li cas xaiv ib leeg Strand Fiber Solution
Kauj Ruam 1: Paub meej hom Fiber
Feem ntau ib txoj hlua BiDi Ethernet txuas yog tsim los rau ib zaug - hom fiber ntau, feem ntauOS2 single-mode fiberhauv kev lag luam thiab kev xa khoom xa tuaj. Tsis txhob xav tias lub patch qaum nyob rau hauv koj txhais tes yog hom zoo vim hais tias lub connector haum rau qhov chaw nres nkoj.
Dab tsi los txheeb xyuas ua ntej xaj:
- Hom fiber ntau: ib hom - hom (OS2 feem ntau) lossis ntau hom
- Hom Connector: LC, SC, FC, lossis lwm yam
- Polish: UPC lossis APC
- Patch vaj huam sib luag thiab adapter hom ntawm txhua qhov kawg
- Xaus - mus rau - qhov kawg ntawm qhov deb, suav nrog cov kab txuas txuas hauv ob chav
- Number of splices thiab mated connectors nyob rau hauv txoj kev
Kauj ruam 2: Xaiv qhov ceev thiab daim ntawv Factor
Txuas lub transceiver mus rau qhov chaw nres nkoj hloov. Cov kev xaiv tshaj plaws yog 1G BiDi SFP, 10G BiDi SFP +, thiab 25G BiDi SFP28; 40G thiab 100G ib leeg -fiber ntau yam muaj tab sis tsis tshua muaj qauv. Ib qho 10G SFP + module yuav tsis sib tham ntawm 1G hauv qhov chaw nres nkoj uas tsis qhia meej txog kev ua haujlwm dual - tus nqi, uas yog ib txwm tau txais thaum rov siv cov keyboards qub. Cov keeb kwm muaj txiaj ntsig tau nyeem ntawm no yog qhov sib txawv ntawm qhov ua tau zootib- hom thiab multimode SFP modulesthaum npaj ib lub nkoj sib xyaw.
Kauj ruam 3: Match TX/RX Wavelengths
Qhov no yog cov kauj ruam uas cuam tshuam cov txuas feem ntau. Ib khub BiDi xav tau cov wavelength ntxiv ntawm ob qhov kawg. Nco ntsoov nyeem daim ntawv lo lossis daim ntawv teev npe rau tus lej TX thiab RX tiag tiag es tsis tso siab rau tus lej.
| Sab A | Sab B | Kev tshwm sim |
|---|---|---|
| TX 1310/RX 1490 | TX 1490 / RX 1310 | Yog khub |
| TX 1310/RX 1490 | TX 1310/RX 1490 | Tsis muaj txuas (tib yam TX wavelength) |
| TX 1270/RX 1330 | TX 1330/RX 1270 | Yog khub |
| TX 1490/RX 1550 | TX 1550 / RX 1490 | Kho khub yog tias ncav cuag thiab lub zog sib tw |
Kauj Ruam 4: Tshawb xyuas qhov deb thiab kho qhov muag nyiaj txiag
Tus lej luam tawm ntawm lub tawb ("10 km", "40 km") yog qhov ntsuas ncav cuag, tsis yog kev qhia. Dab tsi tseem ceeb yog pob nyiaj siv kho qhov muag hla koj qhov txuas tshwj xeeb. Rub txhua tus lej no ua ntej xaj:
- Fais fab kis (TX min / max)
- Txais rhiab heev
- Receiver overload pib
- Fiber attenuation ib kilometer
- Raws li -connector poob thiab tus lej ntawm cov khub sib raug zoo
- Splice poob thiab tus naj npawb ntawm splices
- Kev nyab xeeb margin (feem ntau 2-3 dB)
Ob hom kev ua tsis tiav zais ntawm no. Thawj yog lub zog me dhau, qhov pom tseeb. Qhov thib ob, tsis tshua pom tseeb, yog lub zog ntau dhau: 40 km module ntawm 500 m fiber ntau tuaj yeem tsav lub receiver saum toj ntawm nws qhov pib overload thiab tsim me ntsis yuam kev lossis tsis muaj qhov txuas txhua. Cov hops luv nrog ntev - ncav cuag optics feem ntau xav tau ib lub attenuator ruaj khov. Yog xav paub ntxiv txog qhov twg txhua decibel mus, saib cov ntsiab lus ntawm nokev poob qis hauv fiber ntau.
Kauj ruam 5: Paub meej Connector thiab Device Compatibility
Ua ntej muab qhov kev txiav txim, xyuas:
- Hloov, router, lossis media converter hom thiab cov qauv pes tsawg
- Chaw nres nkoj ceev thiab dual - tus nqi txhawb nqa
- Tus neeg muag khoom coding yuav tsum tau (qee lub platform tsis lees paub qhov tsis pom zoo)
- Connector hom thiab qhov sib txuamSimplex LC connectorntawm txhua daim kab xev
- Polish hom (UPC vs APC) xaus rau qhov kawg
- DOM / DDM saib xyuas kev txhawb nqa ntawm ob lub module thiab tus tswv tsev
- Kev khiav hauj lwm kub ntau, yog hais tias lub optic zaum nyob rau hauv ib tug txoj kev txee los yog ru tsev enclosure
DOM / DDM yog tsim nyog tig rau thaum twg lub platform txhawb nws. Nws nthuav tawm tau txais lub hwj chim kho qhov muag, TX lub hwj chim, qhov kub thiab txias, thiab laser bias tam sim no, uas ua ke cia koj pom qhov kev sib txuas degrading lub lis piam ua ntej nws nyuaj.
Common Single Strand Fiber Deployment yuam kev
Qhov yuam kev 1: Txuas tus qauv Duplex SFP rau hauv Ib Fiber
Ib txwm duplex SFP xav tau ob fibers. Kev sib txuas tsuas yog ib qho yuav tawm ntawm qhov txuas mus tas li. Siv BiDi los yog ib qho - fiber ntau transceiver hloov.
Yuam kev 2: Yuav Ob Qhov Zoo Ib Yam BiDi Modules
BiDi optics muag thiab stocked li A / B khub. Ob qhov zoo tib yam modules xa mus rau tib lub wavelength, thiab qhov txuas yuav tsis tuaj. Khaws cov A thiab B SKUs pom qhov sib cais hauv koj cov khoom muag thiab sau rau ntawm lub khib.
Qhov yuam kev 3: Tsis quav ntsej txog cov peev nyiaj kho qhov muag
Qhov tseeb wavelength khub tseem ua tsis tau yog tias lub zog tau txais sab nraum lub qhov rais txais. Ntsuas lossis kwv yees qhov poob ua ntej qhia txog qhov ntev - ncav cuag optics, thiab tsis txhob xav tias qhov txuas tshiab tshiab yuav nyob ntawm nws hnub- ib qho poob tom qab ob peb re- thaj ua rau thaj.
yuam kev 4: Sib tov APC thiab UPC Connectors
APC thiab UPC polishes tsis hloov pauv. Kev sib xyaw ua ke ua rau muaj kev sib cuag ntawm lub cev tsis zoo, tsis muaj kev nkag siab siab, thiab qee zaum rov qab hnyav heev - teeb meem xav txog. Cov nroj tsuag fiber yog siv ib lossis lwm qhov kawg kom kawg. Rau kev rov ua dua tshiab ntawm qhov polish geometry cuam tshuam nrog kev cuam tshuam, saib phau ntawv qhia noSC / APC connectors thiab polish hom.
yuam kev 5: Tsis nco qab Hloov Compatibility
Qee cov keyboards tswj nruj transceiver coding thiab ntsiag to lov tes taw uncoded lossis thib peb -tog optics. Paub meej tias kev sib raug zoo nrog cov firmware tseeb version ua ntej tso ib qho kev txiav txim, tshwj xeeb tshaj yog nyob rau hauv kev lag luam keyboards, OLTs, thiab ONUs.
Qhov yuam kev 6: Kev khaws cov khoom seem yam tsis muaj A / B Plan
Tus naj npawb tsis txaus ntseeg tom qab - teev kev tawm mus los ntawm cov khoom seem uas dhau los ua qhov tsis ncaj ncees lawm ib nrab ntawm khub. Taug qab A thiab B SKUs cais, daim ntawv lo nrog cov khoom siv kawg uas, thiab khaws ib qho ntawm txhua lub tsheb.
Yuav ua li cas teeb meem ib leeg Strand Fiber Txuas
Thaum ib qhov txuas BiDi yuav tsis tuaj, taug kev cov kab ke no ntau dua li qhov sib pauv ntawm qhov sib txawv:
- Nyeem cov ntawv luam TX/RX wavelengths ntawm ob lub modules. Paub meej tias lawv yog complementary, tsis zoo tib yam.
- Nyeem DOM qhov tseem ceeb ntawm ob qhov kawg. RX lub zog ntawm −40 dBm los yog "tsis muaj teeb liab" feem ntau txhais tau hais tias fiber ntau, connector, los yog wavelength teeb meem es tsis yog ib qho teeb meem module.
- Ntxuav ob lub ntsej muag LC kawg nrog tus paub txog - lub tshuab nqus tsev ntxhua khaub ncaws zoo thiab tshuaj xyuas nrog lub peev xwm. Feem ntau cov "tawg" BiDi txuas yog qias neeg kawg.
- Loopback kuaj txhua qhov module ntawm qhov paub txog -pab fiber ntau zoo siv lub attenuator, los ua pov thawj qhov optic nws tus kheej tseem muaj sia nyob.
- Yog tias RX lub zog siab txawv txav (piv txwv li, −2 dBm ntawm 40 km optic tshaj 200 m ntawm fiber ntau), ntxiv ib qho inline attenuator loj los nqa qib rau hauv lub qhov rais txais.
- Txheeb xyuas qhov txuas txuas (UPC vs APC) yog qhov kawg mus rau qhov kawg. Ib qho APC adapter plam mus rau hauv UPC cov saw hlau yuav raug nqi qis.
- Yog tias txhua yam kuaj tawm optically tab sis qhov chaw nres nkoj tseem tsis tuaj, sib pauv cov transceiver coding (tus neeg muag khoom-coded vs generic) kom txiav txim tawm qhov hloov pauv - sab tsis lees paub.
FAQ
Q: Dab tsi yog qhov txawv ntawm ib leeg fiber ntau thiab duplex fiber ntau?
A: Ib leeg fiber ntau siv ib qho fiber ntau rau kev xa tawm thiab tau txais, sib cais cov lus qhia los ntawm wavelength siv BiDi optics. Duplex fibers siv ob fibers, ib qho kev taw qhia, nrog cov qauv SFPs ntawm txhua qhov kawg.
Q: Puas yog ib qho strand fiber tib yam li simplex fiber?
A: Tsis yog raws nraim. Simplex piav txog lub cable (ib txoj hlua). Ib txoj hlua fiber ntau piav qhia txog txoj kev sib kis (ib txoj hlua nqa ob qho kev qhia). Ib txoj hlua fiber ntau txuas yuav luag ib txwm siv ib txoj hlua khi yooj yooj yim, tab sis cov ntsiab lus tsis sib xws.
Q: Kuv puas tuaj yeem siv ib txwm SFP nrog ib txoj hlua fiber ntau?
A: Tsis yog. Ib tus qauv duplex SFP xav tau ob lub fibers los ua haujlwm. Txhawm rau khiav ntawm ib qho strand koj xav tau BiDi lossis ib zaug - fiber ntau transceiver nrog ib qho ua tau - nyob rau hauv wavelength lim.
Q: Puas yog BiDi SFPs yuav tsum tau siv ua khub?
A: Yog. Lawv raug muag thiab xa mus ua cov khub A / B ntxiv. Kev xa tawm wavelength ntawm ib kawg yuav tsum sib phim qhov tau txais wavelength ntawm lwm qhov.
Q: Yuav ua li cas yog tias kuv nruab ob lub BiDi zoo ib yam?
A: Qhov txuas yuav tsis tuaj. Ob lub modules yuav xa mus rau tib lub wavelength thiab mloog ntawm tib lub wavelength, yog li tsis muaj leej twg hnov lwm tus.
Q: Puas yog BiDi fiber ntau txhim khu kev qha rau kev lag luam network?
A: Yog, thaum tsim kom raug. BiDi optics tau raug xa mus rau ntawm cov chaw nqa khoom txij li 1000BASE-BX10 yog tus qauv, thiab feem ntau cov kev tawm mus rau BiDi txuas tau dhau los ua cov khoom sib txuas qias neeg, tsis ncaj ncees lawm kev sib txuas A / B, lossis cov neeg txais ntau dhau ntawm cov hops luv, tsis yog lub tshuab nws tus kheej.
Q: Puas yog ib leeg strand fiber ntau -hom lossis multimode?
A: Feem ntau ntawm BiDi Ethernet txuas siv tib - hom fiber ntau, feem ntau OS2. Multimode BiDi variants muaj nyob rau qhov ncav cuag luv heev tab sis tsis tshua muaj nyob hauv cov lag luam tseem ceeb.
Q: Puas yog ib leeg fiber ntau pheej yig dua dual strand fiber ntau?
A: Cov optics raug nqi ntau dua rau ib qhov chaw nres nkoj, tab sis tag nrho cov nqi ntawm cov phiaj xwm tuaj yeem qis dua thaum ib leeg strand fiber zam kev teeb tsa tshiab, txuas ntxiv thaj chaw nres nkoj, lossis cov hlua khi ntxiv. Qhov so-txawm yog nyob ntawm tus nqi ua haujlwm pej xeem.
Q: Puas muaj ib txoj hlua fiber ntau txhawb 10G thiab 25G?
A: Yog lawm. 10G BiDi SFP+ tam sim no yog tus qauv rau ib qho -fiber 10G txuas, thiab 25G BiDi SFP28 yog dav siv rau 5G / 4G fronthaul thiab nkag mus rau uplinks. Ceev, wavelength khub, ncav cuag, thiab hloov compatibility tseem yuav tsum sib phim.
Q: Puas yog ib qho strand fiber txo kev ua haujlwm piv rau duplex?
A: Tsis yog nws tus kheej. Ib qhov txuas BiDi tau teev kom raug sau puv -duplex ntawm kab nqi. Cov teeb meem kev ua tau zoo yuav luag ib txwm taug qab rov qab mus rau wavelength mismatch, tsis zoo fiber ntau, cov khoom siv qias neeg, coding tsis sib xws, lossis cov peev nyiaj kho qhov muag uas tsaws sab nraum lub qhov rais txais.
Zaum Kawg
Ib txoj hlua fiber ntau yog ib qho ntawm cov cuab yeej siv tau zoo tshaj plaws thaum muaj fiber ntau tsis tshua muaj, kev ua haujlwm hauv pej xeem yog kim, lossis ib qho cable cog uas twb muaj lawm yuav tsum xa cov kev sib txuas ntxiv yam tsis muaj kev loj hlob. Nws tsis yog lub neej ntawd rau kev tsim tshiab, thiab nws rau txim rau txhua pab pawg uas xaj los ntawm kev ncav cuag thiab nrawm ib leeg.
Ib qho kev txhim kho txhim khu kev qha los mus rau cov npe luv luv ntawm cov tshev: hom fiber ntau, txoj cai ceev thiab daim ntawv zoo, ib khub TX/RX wavelength ntxiv, ib pob nyiaj siv kho qhov muag uas tsaws rau hauv lub qhov rais txais, zoo ib yam txuas txuas mus rau qhov kawg, thiab tus tswv tsev uas lees txais lub module. Khiav cov tshev no ib zaug, sau cov khoom A / B, thiab qhov txuas yuav coj mus rau xyoo.
Yog tias koj tab tom npaj ib txoj haujlwm fiber ntau, pib nrog qhov txuas txuas, hom fiber ntau uas twb muaj lawm, qhov txuas txuas, qhov xav tau ceev, thiab cov qauv hloov. Xaiv qhov sib tw BiDi khub nyob ib ncig ntawm cov kev txwv es tsis yog lwm txoj hauv kev.
