Cov ncauj lus kom ntxaws qhia txog BiDi Transceiver Technology

Dab tsi yog BiDi Transceiver

A BiDi transceiver(luv rau bidirectional transceiver), tseem hu ua aOb-directional SFP module, yog iboptical fiber ntau transceiveruas enableskev sib txuas lus bidirectionalhla ib txoj hlua fiber ntau. Tsis zoo li ib txwm siv dual -fiber optical modules,BiDi SFP transceiverssiv wavelength division multiplexing (WDM) thev naus laus zis rau ib txhij xa cov teeb liab ntawm cov wavelengths sib txawv hauv tib lub fiber ntau, yog li txuag cov peev txheej fiber ntau. Qhov no technology yog tam sim no dav siv nyob rau hauvFTTHnkag mus rau hauv tes hauj lwm, cov ntaub ntawv chaw sib cuam tshuam, kev lag luam hauv tsev kawm ntawv tes hauj lwm, thiab lwm yam xwm txheej.
 

Txoj Cai Ua Haujlwm ntawm BiDi SFP Modules

Qhov tseem ceeb ntawm aBiDi SFP moduleyog WDM lim (tseem hu ua duplexer lossis diplexer). Cov cuab yeej no sib cais thiab sib txuas cov teeb liab kho qhov muag ntawm qhov sib txawv wavelengths, ua raubi-kev sib txuas lushla ib txoj hlua fiber ntau.

Cov txheej txheem ua haujlwm tshwj xeeb: Lub tshuab xa hluav taws xob lub laser tsim cov teeb liab kho qhov muag ntawm qhov tshwj xeeb wavelength (xws li1310nm fiber ntau), uas yog txuas rau hauv fiber ntau los ntawm WDM lim thiab xa mus. Ib txhij, lub teeb liab kho qhov muag ntawm lwm lub wavelength (xws li 1550nm) tau txais los ntawm fiber ntau yog sib cais los ntawm WDM lim thiab xa mus rau lub photodetector rau kev hloov dua siab tshiab rau hauv hluav taws xob teeb liab.

BiDi SFP transceiversyuav tsum tau siv ua khub. Yog tias kawg A kis ntawm 1310nm thiab tau txais ntawm 1550nm, ces kawg B yuav tsum xa ntawm 1550nm thiab tau txais ntawm 1310nm. Kev sib tw wavelength tsis raug yuav tiv thaiv kev sib txuas. Kev sib xyaw ua ke ntawm cov wavelength feem ntau suav nrog: 1310nm / 1490nm, 1310nm / 1550nm, 1270nm / 1330nm, thiab lwm yam.

Qhov sib txawv wavelength sib xyaw ua ke yog tsim rau kev sib kis sib txawv. Kev sib xyaw ua ke ntawm 1310nm / 1550nm feem ntau yog siv rau qhov nruab nrab mus rau ntev - kis tau tus mob (20{5}}120km) vim tias ob lub wavelengths no muaj qis attenuation hauv ib hom fiber ntau; 1270nm / 1330nm feem ntau yog siv rau 10G thiab siab dua tus nqi luv luv rau nruab nrab-qhov kev siv (10-40km).

Internal Structure ntawm BiDi SFP Modules

BiDi SFP modulesfeem ntau muaj xws li cov nram qab no Cheebtsam:

TOSA (Transmitter Optical Sub-Assembly): Muaj ib lub laser diode (LD) thiab tsav tsheb Circuit Court, lub luag hauj lwm rau converting hluav taws xob teeb liab mus rau hauv optical signals ntawm ib tug tshwj xeeb wavelength. Cov lasers feem ntau suav nrog DFB (muab tawm tswv yim) lasers thiab FP (Fabry-Perot) lasers. DFB lasers muaj qhov zoo tshaj plaws wavelength stability thiab haum rau ntev - kis tau tus mob; FP lasers yog tus nqi - zoo thiab feem ntau yog siv rau luv - daim ntawv thov nyob deb.

ROSA (Receiver Optical Sub-Assembly): Muaj photodetector (PIN los yog APD) thiab preamplifier circuit, lub luag hauj lwm rau converting tau txais optical signals rau hauv hluav taws xob signals. PIN detectors yog siv rau cov ntawv thov ib txwm siv, thaum APD detectors muaj qhov rhiab heev dua thiab siv tau ntev - kis tau tus mob.

WDM lim: Cov khoom tseem ceeb ntawm BiDi modules, siv nyias- zaj duab xis lim tshuab los yog grating thev naus laus zis los cais kev xa tawm thiab tau txais cov teeb liab kho qhov muag ntawm qhov sib txawv wavelengths. Lub lim qhov kev ua tau zoo cuam tshuam ncaj qha rau lub module qhov kev nkag tsis tau thiab kev cais tshwj xeeb. High- cov ntxaij lim dej zoo tuaj yeem ua tiav cov kev sib cais ntawm ntau dua 30dB, kom ntseeg tau tias kev xa tawm thiab tau txais cov cim tsis cuam tshuam rau ib leeg.

Circuit Board thiab Interface: Muab kev tswj fais fab, teeb liab ua, thiab DDM (Digital Diagnostic Monitoring) ua haujlwm. Ua raws li cov qauv xws li SFF-8472, nws tso cai rau kev nyeem cov module tsis zoo li qhov kub, qhov hluav taws xob, thiab lub zog kho qhov muag los ntawm I²C interface.

Tag nrho cov module tau ntim rau hauv tus qauv SFP, SFP +, QSFP, lossis lwm yam vaj tse, nrogSClos yogLCsimplex interfaces ntawm qhov chaw nres nkoj.
 

Qhov zoo ntawm BiDi SFP Transceivers

Txo kev siv fiber ntau: Ib qho -fiber kev daws teeb meem txo kev siv fiber ntau los ntawm 50%, uas muaj txiaj ntsig zoo hauv cov haujlwm uas cov peev txheej fiber ntau raug txwv lossis cov nqi cabling siab. Tshwj xeeb tshaj yog nyob rau hauv loj -scale xa mus scenarios xws li cheeb tsam cheeb tsam network thiab FTTH nkag network, cov nqi txuag ntawm fiber ntau. Cov ntaub ntawv hauv chaw tshawb fawb pom tau hais tias kev siv cov tshuaj BiDi txo cov khoom siv fiber ntau thiab cov nqi tsim kho los ntawm kwv yees li 35%.

Simplified Cable Installation: Txo cov fiber ntau fusion splices thiab ODF cov chaw nres nkoj, txo qis kev tsim kho thiab cov nqi zog. Hauv cov phiaj xwm retrofit, uas twb muaj lawm ib leeg - cov peev txheej fiber ntau tuaj yeem siv tau tag nrho yam tsis tas yuav rov xa dua. Qhov no yog qhov tseem ceeb tshwj xeeb rau cov chaw khaws ntaub ntawv qub qub nrog cov khoom siv nruj hauv chav tsev thiab cov tais tag nrho.

Txo qhov chaw nyob: Ib qho -chaw nres nkoj tsim txo qhov chaw nyob ntawm thaj chaw thiab cov txee, ua rau nws tsim nyog rau siab - qhov chaw xa khoom ceev. Lub 24-chaw nres nkoj BiDi thaj vaj huam sib luag tuaj yeem tswj hwm 48 qhov txuas, ua kom qhov chaw siv tau zoo dua ob npaug.

Siab Flexibility: Thaum lub sijhawm hloov kho network, yog tias cov peev txheej fiber ntau tsis txaus,Fiber ntauKev xa tawm tuaj yeem nthuav dav tau sai yam tsis muaj qhov loj - teev rewiring. Qhov kev hloov pauv no muaj txiaj ntsig zoo rau cov xwm txheej uas xav tau kev lag luam siab txuas ntxiv.

Txawm li cas los xij, cov tshuaj BiDi kuj muaj kev txwv. Ib leeg- fiber ntau kis tau tus mob xav tau ntau dua ntawm fiber ntau zoo, nrog rau yam xws li khoov vojvoog thiab kev huv huv muaj kev cuam tshuam ntau dua rau kev sib kis. Fiber kawg-fab ntsej muag los yog kev khoov ntau dhau tuaj yeem ua rau muaj kev sib tham ntawm ob lub teeb liab wavelength, cuam tshuam rau kev ruaj ntseg txuas. Tsis tas li ntawd, thaum muaj kev sib cais ua txhaum, tsis zoo li dual - fiber ntau cov kev daws teeb meem uas TX thiab RX txuas tuaj yeem kuaj cais,Fiber ntauyuav tsum muaj kev ntsuam xyuas holistic, ua kom muaj kev saib xyuas me ntsis nyuaj dua.

BiDi SFP Modules vs. Traditional Dual -Fiber Optical Modules

Qhov sib txawv nruab nrab ntawmBiDi SFP modulesthiab ib txwm siv dual- fiber ntau optical modules nyob rau hauv qhov lawv siv lub cev kis nruab nrab.Duplex fiber ntau xa tawmsiv ob lub fibers ywj siab, ib qho mob siab rau kev sib kis thiab ib qho rau kev txais tos, nrog rau tag nrho lub cev txheej cais.BiDi transceiversua tiav bidirectional kis tau tus mob hla ib fiber ntau los ntawm wavelength division multiplexing technology.

Interface Form
Dual - fiber ntau optical modules siv LC lossis SC duplex interfaces nrog ob qhov chaw nres nkoj;Ob-directional SFP modulessiv simplex interfaces nrog tsuas yog ib qho chaw nres nkoj.

Paired siv
Ib txwm siv dual- fiber ntau optical modules tuaj yeem siv cov qauv zoo ib yam ntawm ob qho kawg (xws li 1000BASE-LX ntawm ob qho kawg) vim tias lawv qhov kev xa tawm thiab tau txais wavelengths tib yam.BiDi SFP transceiversyuav tsum tau siv ua khub nrog sib txawv wavelength ua ke (xws li 1310nm TX / 1550nm RX ntawm ib kawg thiab 1550nm TX / 1310nm RX ntawm lwm yam).

Tus nqi saib
BiDi SFP modulechav tsev nqi feem ntau yog 20%-40% siab dua piv dual- fiber ntau modules vim WDM cov ntxaij lim dej ntxiv cov nqi tsim khoom. Txawm li cas los xij, hauv cov haujlwm uas xav tau kev thauj mus los ntev lossis qhov chaw siv fiber ntau tsawg, tag nrho cov nqi (module + fiber + kev tsim kho) yuav qis dua.

Kev ntseeg tau
Dual- cov kev daws teeb meem fiber ntau muaj zog me ntsis los tiv thaiv- cuam tshuam kev cuam tshuam vim lub cev cais tawm ntawm kev sib kis thiab txais tos; BiDi cov kev daws teeb meem nyob ntawm kev ua haujlwm lim dej thiab muaj cov kev xav tau zoo ntawm fiber ntau. Txawm li cas los xij, nrog kev txhim kho kev tsim khoom, niaj hnubBiDi SFP modulesmuaj kev ntseeg siab mus txog ntawm dual - fiber ntau modules.

Nws yog ib qho tseem ceeb kom nco ntsoov tias "bidirectional" thiab "duplex" yog ob lub ntsiab lus sib txawv. Duplex hais txog txoj kev xa cov ntaub ntawv (tag nrho duplex lossis ib nrab duplex), thaumBiDihais txog lub cev nruab nrab siv txoj kev.BiDi SFP transceiverstseem ua haujlwm nyob rau hauv tag nrho duplex hom, tsuas yog siv tshaj ib qho fiber ntau.
 

Hom ntawm BiDi Transceivers

Classification los ntawm Ceev

1G BiDi SFP: Siv rau Gigabit Ethernet, qhov no yog tam sim no siv dav tshaj plaws BiDi module hom. Kev sib xyaw ua ke ntawm cov wavelength yog 1310nm / 1490nm lossis 1310nm / 1550nm, nrog kev sib kis ntawm 3km txog 120km. Feem ntau siv rau hauv kev lag luam network, tsev kawm ntawv network, FTTH nkag, thiab lwm yam xwm txheej.

10 G BiDiSFP +: Siv rau 10 Gigabit Ethernet, wavelength ua ke feem ntau yog 1270nm / 1330nm (luv mus rau nruab nrab nrug) lossis 1490nm / 1550nm (ntev nrug). Kev sib kis deb li ntawm 10km txog 80km. Dav siv nyob rau hauv cov ntaub ntawv chaw interconnects, cheeb tsam cheeb tsam network, thiab lwm yam scenarios.

25G BiDi SFP28: Siv rau 25G Ethernet, ua haujlwm nqaim qhov sib nrug (xws li 1295nm / 1309nm), nrog kev sib kis ntawm 10-40km. Feem ntau yog siv rau kev nkag mus rau cov neeg rau zaub mov thiab chaw cia khoom hauv cov chaw khaws ntaub ntawv ua haujlwm siab.

40G BiDi QSFP +: Siv dual -fiber tsim tab sis integratesWDMtechnology, nrog txhua fiber ntau nqa 20Gbps bidirectional kis tau tus mob. Siv 832-918nm wavelength ntau yam, ua haujlwm ntawm OM3/OM4 multimode fiber ntau, nrog kev sib kis ntawm 100-150 meters. Haum rau high-density interconnection nyob rau hauv cov ntaub ntawv chaw.

100G BiDi QSFP28: Ua haujlwm PAM4 kev hloov kho thev naus laus zis, nrog ib lub wavelength nqa 50Gbps, ua tiav 100G bidirectional kis tau tus mob hla ib zaug xwb - hom fiber ntau. Kev sib kis deb ntawm 10-40km, siv rau kev sib txuas ntawm cov ntaub ntawv sib txuas.

Classification los ntawm Wavelength Technology

Standard BiDi: Siv cov khub ntev wavelength, xws li 1310nm / 1550nm. Tsawg tus nqi thiab feem ntau siv dav.

CWDM BiDi: Ua hauj lwm coarse wavelength division multiplexing technology, wavelength range 1270nm-1610nm, with 20nm wavelength spacing. Muaj peev xwm multiplex ntau lub wavelengths ntawm ib qho fiber ntau, haum rau thaj chaw hauv nroog thiab kev sib kis mus ntev.

DWDM BiDi: Ua haujlwm hnyav wavelength division multiplexing technology, nrog wavelength spacing tsuas yog 0.8nm (100GHz) lossis 0.4nm (50GHz), ua raws li ITU-T G.694.1 tus qauv. Siv rau cov pob txha caj qaum thiab ultra-ntev- kis tau tus mob, ua tiav kev siv fiber ntau spectrum.

Classification los ntawm Application Scenario

PON BiDi Modules: Tshwj xeeb tsim los rau FTTH / FTTB passive optical networks, xws li EPON, GPON, 10G-EPON, thiab lwm yam. OLT sab thiab ONU sab siv sib txawv wavelength ua ke, nrog rau cov kev teeb tsa raug yog downstream 1490nm / upstream 1310nm. Qee lub tshuab PON tseem overlay ib 1550nm wavelength rau CATV teeb liab kis tau tus mob.

Data Center BiDi Modules: Ua kom zoo rau cov ntaub ntawv chaw ib puag ncig, txhawb nqa DDM kev ua haujlwm, kev siv hluav taws xob tsawg, thiab siab - kev xa tawm ceev. Feem ntau cov nqi yog 10G, 25G, thiab 100G.

Carrier -Qib BiDi Modules: Ua tau raws li tus neeg nqa khoom- qib kev ntseeg tau, nrog rau kev ua haujlwm kub ntawm -40℃txog +85 degree, dhau qhov kev ntsuas ib puag ncig nruj. Siv nyob rau hauv cov chaw nres tsheb sab nraum zoov, lub nroog cheeb tsam network nodes, thiab lwm qhov chaw hnyav.

Muaj -Qib BiDi Modules: Txhim khu kev tiv thaiv- cuam tshuam muaj peev xwm thiab lub zog siv tshuab, haum rau kev lag luam automation, kev thauj mus los ntse, thiab lwm yam xwm txheej.

Daim Ntawv Thov Cheeb Tsam ntawm BiDi Transceivers

FTTH Fiber-rau-lub -Tsev: Thawj daim ntawv thov scenario rau cov cab kuj broadband nkag network.BiDikev daws teeb meem ntawm OLT thiab ONU txuag 50% ntawm cov nqi kho qhov muag (ODN) cov nqi. Ntau pua lab tus neeg siv FTTH thoob ntiaj teb siv BiDi thev naus laus zis. Cov ntaub ntawv hauv qab feem ntau siv 1490nm wavelength, cov ntaub ntawv ntws mus siv 1310nm wavelength, thiab qee lub tshuab kuj siv 1550nm rau CATV teeb liab kis tau tus mob, ua tiav peb -wavelength multiplexing.

Data Center Networks: Khib-rau- khib, pem teb-rau- pem teb, thiab tsev kawm ntawv-rau- kev sib txuas hauv tsev kawm ntawv. Hauv cov chaw siab -cov ntaub ntawv huab ceev ceev,BiDiCov kev daws teeb meem tuaj yeem txo cov kev siv fiber ntau los ntawm 50%, txo qis kev sib txuas. Tshwj xeeb hauv cov haujlwm retrofit, thaum cov peev txheej fiber ntau tam sim no tsis tuaj yeem ua tau raws li qhov yuav tsum tau hloov kho bandwidth, BiDi yog cov kev daws teeb meem zoo tshaj plaws.10G BiDi SFP +thiab25G BiDi SFP28feem ntau siv cov qauv hauv cov chaw zov me nyuam.

Enterprise Campus Networks: Hla-lub tsev thiab hla- thaiv kev lag luam kev sib txuas. Piv nrog rau kev siv ob npaug ntawm cov fiber ntau optic cables,BiDikev daws teeb meem tuaj yeem txo cov nqi tsim kho thiab ncua sij hawm. Haum rau kev sib koom tes hauv tsev kawm ntawv, tsev kho mob, chaw ua si, thiab lwm qhov chaw.

Kev ruaj ntseg soj ntsuam Systems: Cov haujlwm loj soj ntsuam feem ntau koom nrog ntau pua lossis ntau txhiab lub koob yees duab, nrog rau cov haujlwm loj ntawm fiber ntau cabling.BiDiCov kev daws teeb meem tuaj yeem txo cov fusion splices thiab ODF cov chaw nres nkoj los ntawm 50%, ua kom cov kev tsim kho kom nrawm dua thiab txo cov nqi tsis ua haujlwm. Tshwj xeeb tshaj yog nyob rau hauv retrofit tej yaam num, uas twb muaj lawm ib leeg - cov kev pab cuam fiber ntau tuaj yeem siv tag nrho.

5G Fronthaul / Midhaul Networks: Cov ntaub ntawv xa mus ntawm cov chaw sib txuas lus hauv xov tooj ntawm tes thiab cov tub ntxhais sib txuas. Nrog rau siab 5G hauv paus chaw nres tsheb ceev thiab bandwidth yuav tsum tau, BiDi thev naus laus zis txuag cov peev txheej fiber ntau.10G / 25G BiDi modulestau siv dav hauv 5G networks.

Muaj Ethernet: Cov xwm txheej xws li cov chaw tsim khoom ntse, lub tshuab hluav taws xob, thiab kev tswj xyuas tsheb. Kev lag luam ib puag ncig muaj kev ntseeg siab siab tab sis feem ntau txwv qhov chaw cabling.BiDicov kev daws teeb meem txo kev siv fiber ntau thaum txo qis kev nyuaj cable. Muaj-qib BiDi modules muaj qhov dav qhov kub thiab txias thiab txhim khu kev tiv thaiv- muaj peev xwm cuam tshuam.

Kev Tshaj Tawm Networks: CATV teeb liab kis tau tus mob thiab kev pabcuam IPTV. Qee qhov kev tshaj tawm xov xwm siv BiDi thev naus laus zis kom ua tiav fiber ntau optic hloov pauv ntawm HFC tes hauj lwm, txhim kho lub peev xwm network siv cov peev txheej fiber ntau uas twb muaj lawm.

Smart City Applications: IoT cov xwm txheej xws li kev thauj mus los ntse, kev teeb pom kev zoo, thiab kev saib xyuas ib puag ncig. Cov ntawv thov no feem ntau muaj cov ntsiab lus xa mus ua haujlwm thiab nyob deb, nrogBiDicov kev daws teeb meem txo cov nqi fiber ntau infrastructure.

Nws yog ib qho tseem ceeb kom nco ntsoov tias xaiv ntawmBiDithiab ib txwm siv dual- fiber ntau cov kev daws teeb meem yuav tsum tau xav txog qhov project- cov xwm txheej tshwj xeeb: yog tias cov peev txheej fiber ntau muaj, qhov kev ncua deb yog luv, thiab kev siv nyiaj ntau txaus, dual - fiber ntau cov kev daws teeb meem yuav yooj yim dua thiab txhim khu kev qha; Yog tias cov peev txheej fiber ntau muaj tsawg, cov nqi cable yog siab, thiab xav tau kev xa mus sai,BiDicov kev daws teeb meem muaj qhov zoo meej.