I-transceiver ye-Optical sisixhobo se-terminal sosasazo lwe-optical signal.

1. Uhlobo lwe-Optical transceiver:
I-transceiver ye-Optical sisixhobo esiguqula i-E1 ezininzi (umgangatho wokudluliselwa kwedatha kwimigca ye-trunk, ngokuqhelekileyo kwizinga le-2.048Mbps, lo mgangatho usetyenziswa e-China naseYurophu) kwiimpawu ezibonakalayo kwaye uzidlulisele (umsebenzi wayo oyintloko kukuqonda i-electro- amehlo).kunye nokuguqulwa kokukhanya ukuya kumbane).Ii-transceivers ze-Optical zinamaxabiso ahlukeneyo ngokwenani le-E1 port ezithunyelwayo.Ngokuqhelekileyo, i-transceiver encinci ye-optical inokuhambisa i-4 E1, kwaye i-transceiver enkulu yangoku enkulu inokuhambisa i-4032 E1.

Ii-transceivers ze-Optical zahlulwe zaba zi-analog optical transceivers kunye ne-digital optical transceivers:
1) I-analog optical transceiver

I-analog optical transceiver yamkela itekhnoloji yokumodareyitha ye-PFM ukuhambisa uphawu lomfanekiso ngexesha langempela, eyona isetyenziswa kakhulu ngoku.Isiphelo sokudlulisa kuqala senza ukumodareyitha kwe-PFM kwisignali yevidiyo ye-analog, emva koko yenze uguqulo lombane.Emva kokuba isignali ye-optical idluliselwe ekupheleni kokufumana, yenza ukuguqulwa kwe-optical-to-electrical, emva koko yenza i-PFM yokunciphisa ukubuyisela uphawu lwevidiyo.Ngenxa yokusetyenziswa kwetekhnoloji yokumodareyitha ye-PFM, umgama wothumelo unokufikelela ngokulula malunga ne-30 Km, kwaye umgama wokuhanjiswa kwezinye iimveliso unokufikelela kwi-60 Km, okanye namakhulu eekhilomitha.Ukongezelela, isignali yomfanekiso inokuphazamiseka okuncinci emva kokuhanjiswa, kunye nomlinganiselo ophezulu wesignali-kwingxolo kunye nokuphazamiseka okuncinci okungabonakaliyo.Ngokusebenzisa itekhnoloji yolwahlulo lwe-wavelength multiplexing, ukuhanjiswa kwe-bidirectional yomfanekiso kunye neempawu zedatha nazo zinokuqondwa kwifiber enye ye-optical ukuhlangabezana nezidingo zokwenyani zokubeka iliso kwiiprojekthi.

Nangona kunjalo, le transceiver ye-analog optical nayo inezinto ezingalunganga:
a) Ukulungiswa kwemveliso kunzima;
b) Kunzima ukuqaphela ukuhanjiswa kwemifanekiso yeetshaneli ezininzi ngefiber enye, kwaye ukusebenza kuya kuthotywa.Okwangoku, olu hlobo lwe-analog transceiver optical luyakwazi ukuhambisa kuphela imifanekiso ye-4-channel kwi-fiber enye;
c) Ekubeni i-analog modulation kunye ne-demodulation iteknoloji isetyenzisiweyo, ukuzinza kwayo akuphezulu ngokwaneleyo.Ngokunyuka kwexesha lokusetyenziswa okanye utshintsho lweempawu zokusingqongileyo, ukusebenza kwe-transceiver optical kuya kutshintsha kwakhona, okuzisa ukuphazamiseka kwiprojekthi.

2) I-Digital optical transceiver
Kuba itekhnoloji yedijithali ineenzuzo ezicacileyo kwiinkalo ezininzi xa kuthelekiswa neteknoloji ye-analog yemveli, kanye njengokuba itekhnoloji yedijithali ithathe indawo yetekhnoloji ye-analog kwiinkalo ezininzi, i-digitization ye-optical transceiver iyinto engenakuphepheka.Okwangoku, kukho ubukhulu becala iindlela ezimbini zobugcisa zomfanekiso wedijithali i-transceiver optical: enye yiMPEG II yomfanekiso wokucinezela i-digital optical transceiver, kwaye enye yi-non-compress ye-digital optical transceiver.Ukunyanzeliswa komfanekiso Ii-transceivers ze-Digital optical ngokubanzi zisebenzisa iteknoloji yoxinzelelo lwe-MPEG II, ekwazi ukucinezela imifanekiso eshukumayo kwi-N × 2Mbps imilambo yedatha kwaye idlulisele ngonxibelelwano oluqhelekileyo lonxibelelwano lwe-telecommunication interfaces okanye ngokuthe ngqo nge-optical fibers.Ngenxa yokusetyenziswa kweteknoloji yoxinzelelo lomfanekiso, inokunciphisa kakhulu i-bandwidth yokuhambisa umqondiso.