Yintoni imodyuli yesigaba

Yintoni naimodyuli yesigaba

Imodyuli yeSigaba yimodyuli ye-optical enokulawula isigaba se-laser beam. Iindidi eziqhelekileyo zeemodyuli zesigaba zisekwe kwibhokisi yePockelsiimodyuli ze-electro-optickunye neemodyuli zekristale zolwelo, ezinokuthi zithathe ithuba lokutshintsha kwe-thermal fiber refractive index okanye utshintsho lobude, okanye ngokuzolula ukutshintsha ubude. Iimodyuli zesigaba ezahlukeneyo zisetyenziswa kwintsimi ye-optics edibeneyo, apho ukukhanya okumodareyithiweyo kusasazeka kwi-waveguide.

Iimpawu ezibalulekileyo zeemodyuli zesigaba zibandakanya: Ubungakanani bomodareyitha wesigaba (obumisela isalathiso sokumodareyitha kunye negunya elinxulumene nebhendi esecaleni) ifuna i-drive voltage modulation bandwidth (uluhlu lokumodareyitha frequency), iimodyuli ye-electro-opticalikwi-GHz, kwaye isixhobo esisebenzisa isiphumo se-thermal okanye imathiriyeli yekristale elulwelo ingaphantsi kakhulu kunomda wokuvula wesixhobo. Inciphisa iradiyasi ye-beam emodareyithiweyo Imilinganiselo yangaphandle yesixhobo Ezi zakhiwo zihluka kakhulu kwiindidi ezahlukeneyo zeemodyuli zesigaba. Ke ngoko, iimodyuli zesigaba ezahlukeneyo kufuneka zisetyenziswe kwizicelo ezahlukeneyo.

Imizekelo yezicelo zemodyuli yesigaba ibandakanya: Imodyuli yesigaba kwi-laser resonator ye-laser-frequency single ingasetyenziselwa ukulungiswa kwe-wavelength, okanye ukutshixa imowudi esebenzayo (imowudi ye-FM yokutshixa) ye-laser ukuya kwisigaba se-beam ukuba inomlinganiselo ophakathi wokumodareyitha, inokusetyenziswa kwi-laser frequency stabilization mechanism, umzekelo, indlela ye-modular-modulators eninzi idinga indlela ye-modular-interface ye-D. izixhobo zokulinganisa i-spectral, ngokuqhelekileyo zisebenzisa iimpawu zokuqhuba rhoqo. Eminye imilinganiselo ifuna iikama rhoqo, ezifunyaniswa ngesehlo umqadi wefrikhwensi enye kwimodyuli yesigaba. Kule meko, ukumodareyitha kwesigaba ngokuqhelekileyo kufuneka kube namandla, ukwenzela ukuba ufumane amaninzi amabhanti ecala. Kwi-data transmitter ye-optical fiber communication system, i-modulator yesigaba ingasetyenziselwa ukucacisa ulwazi oludlulisiweyo. Umzekelo, indlela ye-phase-shift keying isetyenziswa.