Optical transceiver yog cov khoom siv davhlau ya nyob twg rau cov teeb liab kis tau tus mob.

1. Optical transceiver hom:
Optical transceiver yog ib qho khoom siv uas hloov ntau yam E1 (cov ntaub ntawv kis tus qauv rau cov kab hauv lub cev, feem ntau ntawm tus nqi ntawm 2.048Mbps, tus qauv no yog siv hauv Suav teb thiab Europe) rau hauv cov teeb liab kho qhov muag thiab xa lawv (nws lub luag haujlwm tseem ceeb yog kom paub txog electro- kho qhov muag).thiab hloov lub teeb rau hluav taws xob).Optical transceivers muaj nqi sib txawv raws li tus naj npawb ntawm E1 ports kis.Feem ntau, qhov tsawg tshaj plaws optical transceiver tuaj yeem xa 4 E1, thiab qhov loj tshaj plaws optical transceiver tuaj yeem xa 4032 E1.

Optical transceivers muab faib ua analog optical transceivers thiab digital optical transceivers:
1) Analog optical transceiver

Lub analog optical transceiver txais PFM kev hloov kho thev naus laus zis los xa cov duab teeb liab hauv lub sijhawm tiag tiag, uas yog siv ntau tshaj tam sim no.Kev xa xov kawg ua ntej ua PFM kev hloov kho ntawm cov teeb liab analog video, thiab tom qab ntawd ua hluav taws xob hloov kho qhov muag.Tom qab cov teeb liab kho qhov muag tau xa mus rau qhov kawg tau txais, ua qhov hloov kho qhov muag mus rau hluav taws xob, thiab tom qab ntawd ua PFM demodulation los kho cov teeb liab video.Vim yog siv PFM kev hloov kho thev naus laus zis, qhov kev sib kis tau yooj yim tuaj yeem ncav cuag li 30 Km, thiab kev sib kis ntawm qee yam khoom tuaj yeem ncav cuag 60 Km, lossis txawm ntau pua mais.Tsis tas li ntawd, cov duab teeb liab muaj qhov cuam tshuam me me tom qab kis tau tus mob, nrog cov teeb liab siab-rau-suab nrov piv thiab me me nonlinear distortion.Los ntawm kev siv wavelength division multiplexing technology, bidirectional kis tau tus mob ntawm cov duab thiab cov ntaub ntawv teeb liab kuj tuaj yeem ua tiav ntawm ib qho khoom siv kho qhov muag kom tau raws li qhov xav tau ntawm kev saib xyuas cov haujlwm.

Txawm li cas los xij, qhov no analog optical transceiver kuj muaj qee qhov tsis zoo:
a) Kev debugging ntau lawm yog qhov nyuaj;
b) Nws yog qhov nyuaj rau kev paub ntau cov duab xa mus nrog ib qho fiber ntau, thiab kev ua haujlwm yuav raug degraded.Tam sim no, hom analog optical transceiver feem ntau tsuas yog xa 4-channel dluab ntawm ib qho fiber ntau;
c) Txij li thaum siv cov tshuab analog thiab demodulation, nws qhov kev ruaj ntseg tsis siab txaus.Nrog rau kev siv sijhawm ntau ntxiv lossis kev hloov ntawm ib puag ncig cov yam ntxwv, kev ua haujlwm ntawm optical transceiver kuj yuav hloov, uas coj qee qhov tsis yooj yim rau qhov project.

2) Digital optical transceiver
Txij li cov thev naus laus zis thev naus laus zis muaj txiaj ntsig zoo hauv ntau yam piv nrog cov cuab yeej siv tshuaj analog, ib yam li cov thev naus laus zis digital tau hloov pauv cov thev naus laus zis analog hauv ntau qhov chaw, digitization ntawm optical transceiver kuj yog ib qho kev hloov tsis tau.Tam sim no, feem ntau yog ob txoj kev ntawm cov duab digital optical transceiver: ib qho yog MPEG II duab compression digital optical transceiver, thiab lwm yam yog tsis-compressed digital duab optical transceiver.Duab compression Digital optical transceivers feem ntau siv MPEG II duab compression thev naus laus zis, uas tuaj yeem nthuav tawm cov duab txav mus rau hauv N × 2Mbps cov ntaub ntawv ntws thiab xa lawv los ntawm cov qauv kev sib txuas lus hauv kev sib txuas lus lossis ncaj qha los ntawm fiber ntau.Vim yog siv cov duab compression technology, nws tuaj yeem txo cov teeb liab kis tau tus mob bandwidth.