Modulator we-optical, esetshenziselwa ukulawula ubukhulu bokukhanya, ukuhlukaniswa kwe-electro-optic, thermooptic, acoustooptic, yonke imfundiso ye-optical, eyisisekelo ye-electro-optic umphumela.
I-Optical Modulator ingenye yamadivayisi abonakalayo ahlelekile ahlanganisiwe ngesivinini esikhulu kanye nokuxhumana okubonakalayo okufushane. Modulator elikhanyayo ngokuya ngomgomo wayo wokushintshashintsha, ungahlukaniswa nge-electro-optic, thermooptic, acoustooptic, konke okusekelwe emcabangweni ohlukile, i-Franz-KeldyH effect, i-Quantum Well Stark, umphumela wokuhlakazeka we-Carriers.
Le khasiI-Electro-Optical ModulatorIngabe idivaysi elawula inkomba evulekayo, ukuvumelanisa, amplitude noma isigaba sokuphuma kwesibani ngokushintshwa kwe-voltage noma insimu kagesi. Kuphezulu kwalezi ezinye izinhlobo zama-mod moderators ngokuya ngokulahleka, ukusetshenziswa kwamandla, isivinini kanye nokuhlanganiswa, futhi futhi kungumoduli osetshenziswa kakhulu njengamanje. Esezinhlelweni zokudluliselwa kwe-Optical, ukuhambisa kanye nokwamukela, i-modulator ye-optical isetshenziselwa ukulawula ubukhulu bokukhanya, futhi indima yayo ibaluleke kakhulu.
Inhloso yokushintshana okukhanyayo ukuguqula isiginali oyifunayo noma imininingwane edlulisiwe, kufaka phakathi "ukuqeda isinali sangemuva, ukuqeda umsindo nokuphazamiseka", ukuze kube lula ukucubungula, kudluliselwe futhi kubonakale.
Izinhlobo zokushintshashintsha zingahlukaniswa ngezigaba ezimbili ezibanzi ngokuya ngokuthi imininingwane ilayishwe kuphi ku-Wave Wave:
Eyokuqala amandla okushayela komthombo wokukhanya okulungiselelwe yisiginali kagesi; Enye ukuguqula ukusakaza ngqo.
Okwedlule kusetshenziselwa ukuxhumana okubonakalayo ikakhulukazi, futhi okugcina kusetshenziselwa ukuzwela okubonakalayo. Kufushane: ukuguquguquka kwangaphakathi nokuguquguquka kwangaphandle.
Ngokwendlela yokushintshashintsha, uhlobo lokushintshashintsha
3) Ukushintshwa kombala;
4) Imvamisa kanye nokuguquguquka kwe-wavelength.
1.1, Ukuguquguquka okuphezulu
Ukuguquguquka kokukhanya okukhanyayo ubukhulu bokukhanya njengento yokushintshana, ukusetshenziswa kwezinto zangaphandle ukukala i-DC noma ukuguqulwa okulula kwesiginali esikhanyayo ku-amplifier elula yokukhanya kwesibonakaliso sokukhanya, bese kuthi i-AC Frequency Selection Amplifier ingahle isetshenziswe ngokuqhubekayo.
1.2, Ukushintshwa kwesigaba
Umgomo wokusebenzisa izinto zangaphandle ukuze ushintshe isigaba samagagasi akhanyayo kanye nokulinganisa amanani abonakalayo ngokuthola izinguquko zesigaba abizwa ngokuthi ukuguquguquka kwesigaba sokukhanya.
Isigaba segagasi elikhanyayo linqunywa ngobude bomzimba bokusakazeka kokukhanya, inkomba eyedlulayo yokusatshalaliswa okuphakathi nokusatshalaliswa kwayo, okusho ukuthi, ukuguqulwa kwesigaba segagasi elikhanyayo kungenziwa ngokushintsha amapharamitha angenhla ukuze kufinyelelwe amapharamitha angenhla ukuze kufinyelelwe amapharamitha angenhla ukuze kufinyelelwe amapharamitha angenhla ukuze kufinyelelwe amapharamitha angenhla.
Ngoba umtshina okhanyayo ngokuvamile awukwazi ukubona ukushintshwa kwesigaba segagasi elikhanyayo, kufanele sisebenzise ubuchwepheshe bokuphazamisayo bokukhanya kokushintshwa kokukhanya kwangaphandle, ukuze kufinyelelwe ukuguqulwa kwezingxenye ezimbili: Okwesibili kungukuphazanyiswa kokukhanya.
1.3. Ukushintshwa kwe-polarization
Indlela elula yokuthola ukuguquguquka okukhanyayo ukushintshanisa ama-polarizers amabili ahlobene nomunye. Ngokusho kukaMalus 'theorem, ukuqina kokukhanya okukhanyayo yimi = i0cos2α
Lapho: I0 imele ukuqina kokukhanya okudlula ama-polarizer amabili lapho indiza eyinhloko iguquguquka; I-Alfa imelela i-angle phakathi kwezindiza eziphambili zababili ama-polarizers.
1.4 Frequency and Wavelength Ukuguqulwa
Umgomo wokusebenzisa izici zangaphandle ukuze ushintshe imvamisa noma ukulinganisa okukhanyayo nokulinganisa amanani akhona angaphandle ngokuthola izinguquko kufrikhweni noma ekuguqukeni kwe-wavelength kuthiwa.
Isikhathi sePosi: Aug-01-2023