Kwinkalo yonxibelelwano, uthungelwano lombane lonxibelelwano lweengcingo zentsimbi luthintelwe kakhulu ngenxa yezinto ezinjengokuphazamiseka kombane, i-inter-code crosstalk kunye nelahleko, kunye neendleko zocingo.
Ngenxa yoko, ukuhanjiswa kwamehlo kwazalwa. Ukuhanjiswa kwe-Optical kunezibonelelo ze-bandwidth ephezulu, umthamo omkhulu, ukudibanisa lula, ilahleko ephantsi, ukuhambelana kakuhle kwe-electromagnetic, akukho crosstalk, ubunzima obuncinci, ubungakanani obuncinci, njl.
Ubume obusisiseko bemodyuli ye-optical
Phakathi kwabo, imodyuli ye-optical sisixhobo esisisiseko kwi-optical fiber transmission, kwaye izikhombisi zayo ezahlukeneyo zinquma ukusebenza ngokubanzi kokuhanjiswa. Imodyuli ye-optical yi-carrier esetyenziselwa ukuhanjiswa phakathi kwetshintshakunye nesixhobo, kwaye umsebenzi waso ophambili kukuguqula umqondiso wombane wesixhobo ube ngumqondiso obonakalayo ekupheleni kothumelo. Isakhiwo esisisiseko siquka iinxalenye ezimbini: "icandelo elikhupha ukukhanya kunye nesekethe yalo yokuqhuba" kunye "necandelo lokufumana ukukhanya kunye nesekethe yokufumana kwayo".
Imodyuli ye-optical iqulethe iziteshi ezimbini, ezizezi itshaneli yokudlulisa kunye nejelo elifumanayo.
Ukuqulunqwa kunye nomgaqo wokusebenza wejelo lokudlulisa
Ishaneli yokudlulisa imodyuli ye-optical iqulethwe yi-interface yokufakelwa kombane, i-laser drive circuit, i-impedance match circuit circuit kunye ne-laser component TOSA.
Umgaqo wayo wokusebenza yigalelo lombane wonxibelelwano lwejelo lokuhambisa, ukudityaniswa kwesiginali yombane kugqitywe ngesekethe yonxibelelwano lombane, emva koko isekethe yokuqhuba i-laser kwijelo lokuhambisa imodareyithiwe, kwaye ke inxalenye ehambelana ne-impedance isetyenziselwa i-impedance. ukuhambelana nokugqiba ukumodareyitha kunye nokuqhuba umqondiso, kwaye ekugqibeleni Thumela i-laser (TOSA) ukuguqulwa kwe-electro-optical kwisignali ye-optical transmission ye-optical signal.
Ukuqulunqwa kunye nomgaqo wokusebenza wetshaneli yokufumana
Imodyuli yokufumana ishaneli ye-optical iquka i-optical detector component ROSA (ehlanganiswe ne-photodetection diode (PIN), i-transimpedance amplifier (TIA)), i-impedance match circuit circuit, i-implifier limiting circuit kunye ne-electrical signal output interface circuit.
Umgaqo wayo wokusebenza kukuba i-PIN iguqula isignali ye-optical eqokelelweyo ibe ngumqondiso wombane ngendlela ehambelanayo. I-TIA iguqula lo mqondiso wombane ube ngumqondiso wombane, kwaye ikhulise isignali yombane eguquliweyo kwi-amplitude efunekayo, kwaye iyidlulisele kwi-limiter ngokusebenzisa i-impedance circuit circuit. umlinganiselo wokuya kwingxolo, unciphisa umlinganiselo wempazamo kancinane, kwaye ekugqibeleni isekethe yojongano lombane igqibezela imveliso yomqondiso.
Ukusetyenziswa kwemodyuli yokubona
Njengesixhobo esisisiseko sokuguqulwa kwe-photoelectric kunxibelelwano lwe-optical, iimodyuli ze-optical zisetyenziswa ngokubanzi kumaziko edatha. Amaziko eenkcukacha eziqhelekileyo asebenzisa i-1G / 10G iimodyuli ze-optical low-speed-speed, ngelixa amaziko edatha yefu ikakhulu asebenzisa iimodyuli ze-40G / 100G eziphezulu. Ngeemeko ezintsha zesicelo ezifana nevidiyo ephezulu-definition, usasazo oluphilayo, kunye ne-VR eqhuba ukukhula ngokukhawuleza kwe-traffic yenethiwekhi yehlabathi, ukuphendula kwiindlela zophuhliso lwexesha elizayo, iimfuno ezikhulayo zesicelo ezifana ne-cloud computing, iinkonzo ze-Iaa S, kunye nedatha enkulu ibeka iimfuno eziphezulu. kwiziko ledatha ukuhanjiswa kwedatha yangaphakathi, Okuza kuzala iimodyuli ze-optical kunye namazinga aphezulu okuhambisa kwikamva.
Ngokuqhelekileyo, xa sikhetha iimodyuli ze-optical, siqwalasela ngokukodwa izinto ezifana neemeko zesicelo, iimfuno zezinga lokudluliselwa kwedatha, iintlobo ze-interface, kunye nomgama wokuhanjiswa kwe-optical (imodi ye-fiber, amandla okukhanya afunekayo, i-wavelength yeziko, uhlobo lwe-laser) kunye nezinye izinto.