I-Optical Transceiver iyisisetshenziswa esibulalayo sokudlulisa isignali yokubona.

1. Uhlobo lwe-Optical transceiver:
I-Optical transceiver iyithuluzi eliguqula i-E1 eminingi (izinga lokudluliswa kwedatha lemigqa ye-trunk, ngokuvamile ngenani elingu-2.048Mbps, leli zinga lisetshenziswa e-China naseYurophu) libe amasignali okubona futhi liwathumele (umsebenzi walo oyinhloko ukubona i-electro- optical).kanye nokuguqulwa kokukhanya kuya kugesi).Ama-Optical transceivers anamanani ahlukene ngokuya ngenani lamachweba we-E1 adlulisiwe.Ngokuvamile, i-transceiver encane kakhulu yokubona ingadlulisela i-4 E1, futhi i-transceiver ebonakalayo enkulu yamanje ingadlulisela i-4032 E1.

Ama-transceivers optical ahlukaniswe abe ama-analog optical transceivers kanye nama-digital optical transceivers:
1) I-analog optical transceiver

I-analog optical transceiver yamukela ubuchwepheshe bokushintshwa kwe-PFM ukuze idlulisele isignali yesithombe ngesikhathi sangempela, okuyisona esisetshenziswa kakhulu njengamanje.Isiphetho sokudlulisela kuqala senza ukushintshashintsha kwe-PFM kusiginali yevidiyo ye-analogi, bese senza ukuguqulwa kwe-electrical-optical.Ngemva kokuba isignali yokubona idluliselwe endaweni eyamukelayo, yenza ukuguqulwa kwe-optical-to-electrical, bese yenza ukwehlisa i-PFM ukuze kubuyiselwe isignali yevidiyo.Ngenxa yokusetshenziswa kobuchwepheshe bokushintshwa kwe-PFM, ibanga lokudlulisela lingafinyelela kalula ku-30 ​​Km, futhi ibanga lokudlulisela leminye imikhiqizo lingafinyelela ku-60 Km, noma ngisho namakhulu amakhilomitha.Ngaphezu kwalokho, isignali yesithombe inokuhlanekezela okuncane kakhulu ngemva kokudluliselwa, ngesilinganiso esiphezulu sesignali kuya kumsindo kanye nokuhlanekezela okuncane okungaqondile.Ngokusebenzisa ubuchwepheshe bokuphindaphinda kwe-wavelength division multiplexing, ukudluliswa okuphindwe kabili kwezimpawu zesithombe nedatha kungabuye kubonakale ku-fiber eyodwa optical ukuhlangabezana nezidingo zangempela zamaphrojekthi wokuqapha.

Kodwa-ke, le-analog optical transceiver nayo inobubi obuthile:
a) Ukulungisa iphutha lokukhiqiza kunzima;
b) Kunzima ukubona ukudluliswa kwezithombe zamashaneli amaningi ngefayibha eyodwa, futhi ukusebenza kuzokwehliswa.Njengamanje, lolu hlobo lwe-analog optical transceiver ngokuvamile lungadlulisela kuphela izithombe zeziteshi ezingu-4 ngefayibha eyodwa;
c) Njengoba kusetshenziswa i-analog modulation kanye nobuchwepheshe bokwehlisa izinga, ukuzinza kwayo akuphakeme ngokwanele.Ngokukhula kwesikhathi sokusetshenziswa noma ukuguqulwa kwezici zemvelo, ukusebenza kwe-transceiver optical nakho kuzoshintsha, okuletha ukuphazamiseka okuthile kuphrojekthi.

2) I-Digital optical transceiver
Njengoba ubuchwepheshe bedijithali bunezinzuzo ezisobala ezicini eziningi uma kuqhathaniswa nobuchwepheshe be-analog bendabuko, njengoba nje ubuchwepheshe bedijithali buthathe indawo yobuchwepheshe be-analog emikhakheni eminingi, ukufakwa kwedijithali kwe-optical transceiver nakho kuwumkhuba ongenakugwenywa.Njengamanje, kukhona ikakhulukazi izindlela ezimbili zobuchwepheshe ze-transceiver optical image yedijithali: eyodwa iyi-MPEG II yokucindezelwa kwesithombe i-digital optical transceiver, kanti enye iyi-transceiver ebonakalayo yedijithali engacindezelwe.Ukucindezelwa kwesithombe Ama-transceivers okusebenza edijithali ngokuvamile asebenzisa ubuchwepheshe bokuminyanisa izithombe be-MPEG II, obungakwazi ukucindezela izithombe ezihambayo zibe yimifudlana yedatha ye-N×2Mbps futhi zizidlulisele ngokusebenzisa izixhumanisi ezijwayelekile zokuxhumana ngocingo noma ngokuqondile ngemicu yokubona.Ngenxa yokusetshenziswa kobuchwepheshe bokucindezela izithombe, kunganciphisa kakhulu umkhawulokudonsa wokudlulisa isignali.