BiDi Transceiver Applications: Tib Fiber Solutions rau Niaj Hnub Nyoog Networks
Mar 24, 2026| BiDi (Bidirectional) transceivers xa thiab tau txais cov ntaub ntawv ib txhij dhau ib leeg fiber ntau siv ob qhov sib txawv wavelengths thiab WDM thev naus laus zis, ua tau zoo halving fiber ntau suav ib qhov txuas.Lawv tau siv dav hauv kev sib txuas hauv tsev kawm ntawv qaum teb, FTTH nkag network, 5G fronthaul / backhaul txuas, metro nplhaib architectures, thiab CCTV soj ntsuam systems. Kab lus no piav qhia yuav ua li cas BiDi ib leeg fiber ntau tshuab ua haujlwm hauv kev xyaum, qhov twg nws ua rau kev txiav txim siab, thiab seb yuav kuaj xyuas dab tsi ua ntej cog lus rau kev xa mus.
Yuav ua li cas BiDi Ib Leeg Fiber Transmission ua haujlwm tiag tiag
Tus qauv duplex transceiver xav tau ob fibers -ib qho xa tuaj, ib qho yuav tau txais. Ib tug BiDi transceiver tsoo mus rau hauv ib qho strand. Cov khoom tseem ceeb yog lub diplexer, qee zaum hu ua WDM coupler, uas zaum hauv lub module thiab ua ob txoj haujlwm ib zaug: nws ua ke cov khoom siv hluav taws xob hauv zos xa mus rau cov fiber ntau thaum faib tawm cov khoom tau txais wavelength thiab coj nws mus rau lub photodetector.
CovIEEE 802.3 uaspecification Ameslikas txhais tau hais tias txoj hauv kev no rau Gigabit Ethernet hauv Thawj Mile (EFM), siv 1310nm / 1490nm wavelength khub dhau ib zaug - hom fiber ntau. Txij thaum ntawd los, lub tswvyim tau nce mus rau cov ntaub ntawv ntau dua. Niaj hnub no 10G BiDi SFP + modules feem ntau siv 1270nm / 1330nm khub rau 10-60km ncav cuag, thaum 25G SFP28 BiDi sib txawv txhawb nqa mus txog 40km rau 5G mobile thauj. Ntawm 100G, QSFP28 BiDi leverages plaub CWDM wavelengths txhais hauvITU-T G.694.2(1271, 1291, 1311, 1331nm) kom ua tiav luv luv - ncav cuag ib qho - fiber ntau txuas hauv cov chaw zov me nyuam.
Ib qho kev nthuav dav uas ntes tib neeg tawm ntawm tus neeg saib xyuas: BiDi modules yuav tsum tau muab tso rau hauv cov khub sib tw. Sab A kis ntawm ib lub wavelength thiab tau txais ntawm lwm qhov; Sab B ua qhov thim rov qab. Txhim kho ob sab A modules ntawm qhov sib txawv ntawm qhov txuas txhais tau hais tias ob qho kawg xa mus rau tib lub wavelength uas tsis muaj tus neeg txais xov tooj tuaj yeem ntes nws - qhov txuas tseem tsaus. Qhov no yog ib qho kev xa tawm tsis ua haujlwm, tshwj xeeb tshaj yog thaum cov installers rub ob qhov zoo tib yam modules los ntawm tib lub tais es tsis txhob kuaj A / B cov ntawv ua ntej patching. Xim-coding lossis sau npe Sab A thiab Sab B ntawm theem tsev khaws khoom tshem tawm feem ntau ntawm cov teeb meem no. Nkag siab txog cov mechanics qaboptical txuas module ua haujlwmpab tiv thaiv qhov yuam kev no.
Campus thiab Enterprise Backbone Networks
Qhov kev sib cav nyiaj txiag rau BiDi transceivers yog qhov yooj yim pom hauv thaj chaw hauv tsev kawm ntawv. Xav txog ib nrab - tsev kawm ntawv me me nrog fiber ntau txuas mus rau kaum ob lub tsev sib kis thoob plaws ntau pua daim av. Txhua lub tsev - mus rau - lub tsev txuas uas siv cov qauv duplex transceivers yuav tsum muaj ob txoj hlua fiber ntau. Hloov mus rau BiDi, thiab txhua qhov txuas txuas mus rau ib txoj hlua.
Cov nyiaj khaws cia ntxiv hla cov hlua txuas, kev sib txuas ua haujlwm, thiab kev siv fiber ntau-tshwj xeeb tshaj yog nyob rau hauv lub tsev kawm ntawv ntev dua uas qhov chaw kaw tau nruj. Qhov tawg -txawm qhov taw tes nyob ntawm qhov txuas ntev, tus nqi module, thiab cov nqi teeb tsa hauv zos, yog li nws txawv ntawm qhov project mus rau qhov project. Ntawm kev khiav luv dua qhov twg fiber ntau ntau, duplex optics tseem yuav yooj yim dua. Tab sis thaum cov strand suav raug txwv lossis cov kav dej laus tsis tuaj yeem siv ntau cable, BiDi hloov kev lag luam.
Tshaj li cov nqi ntawm cov khoom siv, cov hlua tsawg dua txhais tau hais tias cov kav dej tsawg dua, tsawg dua splices qhia qhov poob, thiab kev daws teeb meem yooj yim dua. Rau cov phiaj xwm hauv tsev kawm ntawv, cov kev txiav txim siab tseem ceeb yog cov khoom muaj nyob, txuas ntev, thiab cov peev nyiaj kho qhov muag. Peb phau ntawv qhia rauSFP transceiver hom hla ntau qhov ceevnpog cov kev xaiv module yog tias koj xav tau kev ceev - los ntawm - sib piv ceev.
FTTH thiab Broadband Access Networks
Fiber-rau--Kev xa tawm hauv tsev yog qhov sib cav ntau tshaj plaws - daim ntawv thov rau BiDi thev naus laus zis. Hauv taw tes-rau- taw tes FTTH architectures, txhua qhov kev sib txuas ntawm cov neeg siv khoom yuav tsum muaj cov fiber ntau los ntawm cov kab hluav taws xob kho qhov muag (OLT) mus rau qhov chaw. Txo qhov ntawd mus rau ib qho kev sib txuas nrog BiDi muaj kev cuam tshuam ncaj qha rau cov nqi tsim kho vaj tse -txawm tias qhov kev txuag nyiaj tiag tiag nyob ntawm tus nqi fiber ntau hauv zos, cov kav dej muaj, thiab cov nqi ua haujlwm.
Ntau qhov loj -tej lub teb chaws broadband cov kev pab cuam tau txais BiDi rau kev nkag tau - txheej kev sib txuas, feem ntau yog siv 1310nm / 1490nm lossis 1310nm / 1550nm wavelength khub ntawm 1G speeds. 10G variants yog nce ntxiv raws li kev thov bandwidth. Hais tias, tus nqi kom zoo dua tsis muaj zog nyob qhov twg fiber ntau twb pheej yig thiab plentiful, los yog qhov twg nkag mus topology siv PON (passive optical network) es tsis yog point - mus rau -point architecture. PON systems muaj lawv tus kheej wavelength tswj thiab tsis tau txais txiaj ntsig los ntawm BiDi modules tib yam.
5G Fronthaul thiab Backhaul Thauj
In dense 5G builds, BiDi helps in two practical ways: it reduces strand consumption and cuts cable bulk in crowded ducts. Txhua lub xovtooj ntawm tes yuav xav tau ntau qhov siab -bandwidth txuas ntawm nruab nrab ntawm lub hauv paus hauv paus thiab lub taub hau xov tooj cua nyob deb, thiab hauv kev xa mus hauv nroog, qhov chaw fiber ntau feem ntau yog qhov nyuaj tshaj plaws los ua haujlwm.
25G SFP28 BiDi modules yog qhov kev xaiv ua tau zoo rau 5G fronthaul, txhawb nqa eCPRI thiab CPRI raws tu qauv uas txuas cov units faib (DU) rau xov tooj cua units (RU). Lub 1270nm / 1330nm wavelength khub dhau ib zaug - hom fiber ntau npog 10-20km kev ncua deb ntawm cov ntu pem hauv ntej. Rau backhaul aggregation los ntawm cov chaw ntawm tes mus rau lub xov tooj ntawm tes, 10G BiDi SFP + modules tswj kev khiav tsheb ntawm tus nqi qis dua ib ntsis.
Dab tsi ua rau BiDi muaj txiaj ntsig zoo rau cov neeg siv xov tooj ntawm tes yog lub peev xwm rov qab siv cov fiber ntau uas twb muaj lawm yam tsis tau rub cov kab tshiab. Ib tsob nroj fiber ntau uas tau txhawb nqa 4G nrog kev sib txuas duplex tuaj yeem ua haujlwm txuas ntxiv los ntawm kev sib pauv mus rau BiDi- tsis muaj trenching, tsis muaj kev tso cai qeeb. Tab sis muaj ib tug ntes: lub diplexer ntxiv qhov poob, uas ua rau cov kab txuas txuas ntxiv. Ntawm qhov chaw fronthaul qhov twg cov peev nyiaj kho qhov muag twb nruj, xyuas cov peev nyiaj siv hluav taws xob ua ntej xav tias BiDi ua haujlwm ntawm tib qhov deb li duplex.
Ib qho qauv xa tawm tsim nyog: qee tus neeg ua haujlwm khub 25G BiDi fronthaul nrog 10G BiDi backhaul ntawm tib lub hnab fiber ntau, siv tsis yog - sib tshooj wavelength khub (1270nm / 1330nm rau fronthaul, 1490nm / 1550nm rau backhaul). Qhov kev sib koom ua ke no ua haujlwm tab sis yuav tsum tau ceev faj txog kev npaj ua ntej.
Metro thiab WDM Ring Networks
Cov chaw hauv cheeb tsam hauv cheeb tsam ntsib teeb meem tsis tu ncua ntawm kev loj hlob muaj peev xwm thiab muaj fiber ntau. BiDi haum ib txwm rau hauv metro nplhaib architectures qhov twg txhua qhov ntawm cov tsheb khiav hauv ob qho tib si ntawm txoj kev sib koom.
Rau cov ntawv thov metro xav tau ntau dua ib zaug BiDi wavelength khub, thev naus laus zis ua ke nrog kev ua haujlwm zoo.CWDM mux/demux platforms. Overlaying ntau BiDi raws mus rau tib lub peev xwm fiber ntau incrementally tsis muaj fiber ntau siv. Qhov txheej txheem txheej txheem no -BiDi rau fiber ntau efficiency ntxiv rau CWDM rau wavelength ceev- tuaj yeem txhim kho tus nqi zoo rau cov chaw muab kev pabcuam hauv cheeb tsam, txawm tias tus nqi tag nrho yog nyob ntawm tus lej suav, qhov deb, thiab seb koj xav tau kev nthuav dav.
Kev soj ntsuam, yees duab, thiab kev siv tshwj xeeb
High -Kev ceev CCTV thiab IP soj ntsuam kev teeb tsa yog qhov tsis tshua pom tseeb tab sis siv tau zoo. Ib qho kev ruaj ntseg hauv tsev kawm ntawv loj tuaj yeem txuas 200 lossis ntau dua IP koob yees duab rov qab mus rau lub chaw tswj hwm video hauv nruab nrab. Txhua qhov txuas lub koob yees duab yog qhov qis dua -bandwidth, tab sis cov fiber ntau suav suav ntxiv nrawm nrog kev sib txuas duplex.
BiDi SFP modules ntawm 1000BASE-BX ceev tswj cov kev sib txuas ntawm ib leeg fiber ntau, thiab cov khoom sib txuas yooj yim LC yuav siv sij hawm tsawg dua qhov chaw vaj huam sib luag dua lwm qhov kev xaiv. Kev tshaj tawm cov yeeb yaj kiab digital, kev saib xyuas kev lag luam, thiab siab - hloov qhov ceev- mus rau - hloov kev sib tshuam hauv qhov chaw nruj txhua qhov tau txais txiaj ntsig los ntawm tib txoj cai.
Thaum BiDi yuav tsis yog qhov kev xaiv zoo tshaj plaws
BiDi tsis yog cov lus teb zoo rau txhua qhov txuas. Qee qhov xwm txheej uas tus qauv duplex optics yuav yooj yim dua lossis txhim khu kev qha:
- Fiber ntau twb muaj lawm.Yog tias koj lub raj xa dej muaj ntau cov khoom seem, cov nyiaj txuag fiber ntau tsis cuam tshuam tus nqi siab dua thiab sib npaug -pair cov khoom lag luam nyuaj.
- Cov pab pawg nyiam qhov zoo ib yam ntawm ob qhov kawg.Duplex siv tib lub module ntawm txhua qhov kawg. BiDi xav tau Sab A thiab Sab B. Rau cov pab pawg uas muaj kev paub txog kev kho qhov muag tsawg, cov khoom muag tsis zoo yuav txo qhov yuam kev.
- Ntev txuas nrog nruj optical margin.Lub diplexer ntxiv qhov poob. Ntawm cov kev sib txuas ze ntawm lub module qhov siab tshaj plaws, qhov kev poob ntxiv tuaj yeem thawb koj sab nraum lub zog siv nyiaj.
- Cov kev sib txuas uas twb muaj lawm suav tias yog duplex.Hloov mus rau BiDi txhais tau hais tias rov qhia cov neeg ua haujlwm thiab hloov kho cov ntaub ntawv. Rau kev xa me me, tus nqi hloov pauv yuav tsis tsim nyog.
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| Xyuas yam khoom | Vim Li Cas Nws Tseem Ceeb | Yuav Qhia Li Cas |
|---|---|---|
| A/B sib phim | Cov modules tsis sib xws yog qhov ua tsis tiav BiDi feem ntau | Paub meej Side A ntawm ib kawg, Sab B ntawm lwm qhov; daim ntawv lo ua ntej shipping |
| Optical zog pob nyiaj siv | Diplexer ntxiv qhov poob qis vs. duplex modules | Xam tag nrho qhov txuas attenuation; piv rau module spec |
| Wavelength tsis sib haum | BiDi wavelengths yuav sib tshooj nrog CWDM / DWDM ntawm tib lub fiber ntau | Tshawb xyuas cov phiaj xwm wavelength rau tag nrho txoj kev fiber ntau |
| Kev them nyiaj yug DOM / DDM | Tiag -kev soj ntsuam lub sij hawm ib SFF-8472 catches degradation ntxov | Txheeb xyuas cov modules qhia Tx / Rx lub zog, qhov kub thiab txias, thiab kev tsis ncaj ncees tam sim no |
| Cov khoom thiab cov khoom seem | Koj xav tau ob qho A-sab thiab B- sab seem |
Tshuag yam tsawg kawg ib khub spare ib qhov chaw; daim ntawv qhia meej |
Piv txwv li: 10G BiDi Txuas Nyiaj Tau Tshaj 10km
Ua ntej xa BiDi ntawm ib qho kev sib txuas, xyuas kom meej tias tag nrho txoj kev poob nyob rau hauv lub module cov nyiaj siv kho qhov muag. Ntawm no yog ib qho piv txwv ua haujlwm rau 10G BiDi SFP + module ntawm 10km ib zaug - hom fiber ntau khiav, siv tus qauvITU-T G.652Dfiber ntau parameter:
| Parameter | Tus nqi | Qhov chaw |
|---|---|---|
| Fiber ntau attenuation (1270nm, 10km) | 0.35 dB/km × 10=3.5 dB | G.652D spec, 1310nm qhov rais |
| Connector poob (2 khub niam txiv) | 0.3 dB × 2=0.6 dB | TIA-568 qib, LC/UPC |
| Splice poob (1 fusion splice) | 0.1 dB × 1=0.1 dB | Hom fusion splice |
| Diplexer tshaj poob (ob qho tag nrho) | ~ 1.0 dB | Module internal, ib tus neeg muag khoom datasheet |
| Tag nrho kwv yees txoj kev poob | 5.2dB ib | |
| Module txuas pob nyiaj siv (Tx min rau Rx rhiab heev) | 14.0 dB | 10G BiDi SFP + cov ntaub ntawv |
| Cov npoo seem | 8.8dB ib |
Ib qho 8.8 dB margin yog qhov yooj yim- nws suav nrog kev laus fiber ntau, kev kho lub neej yav tom ntej splices, thiab kev sib kis kab mob hauv lub sijhawm. Yog tias cov npoo no poob qis dua 3 dB, xav txog qhov siab dua - fais fab module lossis luv dua qhov sib txawv. Lub diplexer poob kab yog qhov sib txawv tseem ceeb ntawm kev siv nyiaj duplex; tus qauv duplex transceiver ntawm tib cov ntaub ntawv tus nqi yuav rov qab kwv yees li 1 dB ntawm cov npoo ntawd.
Cov lus nug nquag
Q: Kuv puas tuaj yeem siv BiDi transceiver nrog tus qauv duplex transceiver ntawm lwm qhov kawg?
A: Tsis yog. BiDi transceivers xa thiab tau txais ntawm cov wavelengths sib txawv ntawm ib qho fiber ntau, thaum duplex transceivers siv tib lub wavelength ntawm ob fibers cais. Ob qhov kawg ntawm BiDi txuas yuav tsum siv cov qauv BiDi ntxiv -ib sab A ua ke nrog ib Sab B.
Q: Dab tsi yog qhov siab tshaj plaws ntawm BiDi transceiver tuaj yeem ncav cuag?
A: Nws nyob ntawm cov ntaub ntawv tus nqi, wavelength configuration, thiab koj cov nroj tsuag fiber ntau attenuation. Ntawm 1G, txuas ntxiv - mus txog BiDi SFP modules siv 1490nm / 1550nm wavelength khub raug ntsuas rau 80–120km dhau ib zaug - hom fiber ntau. Ntawm 10G, ntau BiDi SFP + kev teeb tsa npog 10-60km nrog 1270nm / 1330nm khub. Ntawm 25G, cov qauv tam sim no txhawb nqa txog 40km. Cov no yog cov neeg muag khoom- qhov siab tshaj plaws tshwj xeeb- qhov kev ncav cuag tiag tiag nyob ntawm tag nrho cov kev txuas tsis suav nrog cov splices, connectors, thiab fiber ntau.
Q: Puas yog BiDi transceivers kim dua tus qauv duplex modules?
A: Ib -unit module nqi feem ntau yog siab dua vim yog kev sib xyaw diplexer. Txawm li cas los xij, tag nrho cov nqi txuas yuav qis dua ib zaug koj tau txais txiaj ntsig hauv kev txuag fiber ntau, txo cov kab hluav taws xob, thiab kev tswj xyuas cable yooj yim dua. Txawm hais tias qhov kev txuag nyiaj offset tus nqi yog nyob ntawm qhov txuas suav, nyob deb, tus nqi zog, thiab muaj fiber ntau hauv zos- khiav cov lej rau koj qhov kev xa tawm tshwj xeeb.
Q: Puas yog BiDi transceivers ua haujlwm dhau ntawm multimode fiber ntau?
A: Feem ntau BiDi transceivers yog tsim los rau ib leeg - hom fiber ntau. Qhov tshwj xeeb tseem ceeb yog 40G QSFP + BiDi module, uas ua haujlwm ntawm 850nm tshaj OM3 / OM4 multimode fiber ntau nrog ob 20G raws, ncav cuag 100-150 meters. Qhov kev hloov pauv no tau tsim los ua txoj hauv kev txhim kho los ntawm 10G mus rau 40G hauv cov chaw cov ntaub ntawv uas tau teeb tsa multimode fiber ntau.
Q: BiDi technology txawv ntawm CWDM lossis DWDM li cas?
A: BiDi siv ib lub wavelength ib khub (ib qho rau kev xa tawm, ib qho rau kev txais) tshaj ib qho fiber ntau rau ib qho kev sib txuas ib leeg. CWDM thiab DWDM multiplex ntau wavelength raws mus rau ib qho kev sib koom ua ke fiber ntau kom nqa tau ntau yam kev ywj pheej txuas ib txhij. Lawv hais txog cov teeb meem sib txawv-BiDi txo cov suav fiber ntau hauv ib qhov txuas, thaum CWDM/DWDM nce tus lej txuas rau ib qho fiber ntau. Hauv kev tes hauj lwm metro, qee zaum lawv tau siv ua ke, txawm tias qhov sib xyaw ua ke ntxiv qhov nyuaj hauv kev npaj wavelength.