I-Optical module, esetshenziselwa ukulawula ukushuba kokukhanya, ukuhlukaniswa kwe-electro-optic, i-thermooptic, i-acoustooptic, yonke i-optical, ithiyori eyisisekelo ye-electro-optic effect.
I-Optical modulator ingenye yemishini yokubona ebaluleke kakhulu edidiyelwe ekuxhumaneni okubonakalayo okunesivinini esikhulu kanye nebanga elifushane. I-modulator yokukhanya ngokuvumelana nesimiso sayo sokuguquguquka, ingahlukaniswa nge-electro-optic, thermooptic, acoustooptic, all optical, njll., zisekelwe embonweni oyisisekelo yizinhlobonhlobo zezinhlobo ezahlukene zomphumela we-electro-optic, umphumela we-acoustooptic, umphumela we-magnetooptic, umphumela we-Franz-Keldysh, umphumela we-quantum kahle we-Starspersion, umphumela we-carrier dispersion.
Ii-electro-optical moduleiyithuluzi elilawula inkomba ye-refractive, ukumuncwa, ukuphakama noma isigaba sokukhanya okukhiphayo ngokushintsha kwamandla kagesi noma inkambu kagesi. Iphakeme kunezinye izinhlobo zamamoduli ngokuya ngokulahleka, ukusetshenziswa kwamandla, isivinini nokuhlanganiswa, futhi iyimoduli esetshenziswa kakhulu njengamanje. Enkambweni yokudluliselwa kwe-optical, ukudlulisa nokwamukela, i-modulator ye-optical isetshenziselwa ukulawula ubukhulu bokukhanya, futhi indima yayo ibaluleke kakhulu.
Inhloso yokuguquguquka kokukhanya ukuguqula isignali oyifunayo noma ulwazi oludlulisiwe, okuhlanganisa "ukuqeda isignali yangemuva, ukuqeda umsindo, nokunqanda ukuphazamiseka", ukuze kwenziwe kube lula ukucubungula, ukudlulisa nokuhlonza.
Izinhlobo zokuguquguquka zingahlukaniswa zibe izigaba ezimbili ezibanzi kuye ngokuthi ulwazi lulayishwe kuphi kumaza okukhanya:
Enye amandla okushayela omthombo wokukhanya ahlelwe isignali kagesi; Okunye ukumodela ukusakaza ngqo.
Owokuqala usetshenziswa kakhulu ekuxhumaneni okubonakalayo, kanti lena yakamuva isetshenziselwa ikakhulukazi ukuzwa. Ngamafuphi: ukushintshashintsha kwangaphakathi nokushintshashintsha kwangaphandle.
Ngokwendlela yokushintshashintsha, uhlobo lokumodulation yilokhu:
3) I-polarization modulation;
4) Imvamisa nokuguqulwa kwamaza.
1.1, ukuqina kwe-modulation
Ukushintsha amandla okukhanya ukushuba kokukhanya njengento yokuguqula, ukusetshenziswa kwezinto zangaphandle ukukala i-DC noma ukushintsha kancane kwesignali yokukhanya ibe ukuguqulwa kwemvamisa esheshayo yesiginali yokukhanya, ukuze isikhulisamazwi sokukhetha imvamisa ye-AC singasetshenziswa ukukhulisa, bese inani elizokalwa ngokuqhubekayo.
1.2, ukuguqulwa kwesigaba
Umgomo wokusebenzisa izici zangaphandle ukuze uguqule isigaba samaza okukhanya nokulinganisa amanani angokwenyama ngokuthola izinguquko zesigaba kubizwa ngokuthi i-optical phase modulation.
Isigaba segagasi lokukhanya sinqunywa ubude bomzimba bokusabalalisa ukukhanya, inkomba ye-refractive ye-propagation medium kanye nokusabalalisa kwayo, okusho ukuthi, ukuguqulwa kwesigaba segagasi lokukhanya kungenziwa ngokushintsha imingcele engenhla ukuze kuzuzwe ukushintshwa kwesigaba.
Ngenxa yokuthi umtshina wokukhanya ngokuvamile awukwazi ukubona ukuguqulwa kwesigaba segagasi lokukhanya, kufanele sisebenzise ubuchwepheshe bokuphazanyiswa kokukhanya ukuguqula ukuguqulwa kwesigaba ekushintsheni kokuqina kokukhanya, ukuze kuzuzwe ukutholwa kwamanani angaphandle angaphandle, ngakho-ke, ukuguqulwa kwesigaba se-optical kufanele kufake izingxenye ezimbili: enye iyindlela ebonakalayo yokukhiqiza ukuguqulwa kwesigaba segagasi lokukhanya; Okwesibili ukuphazanyiswa kokukhanya.
1.3. I-polarization modulation
Indlela elula yokufinyelela ukuguquguquka kokukhanya ukuzungezisa ama-polarizer amabili ahlobene. Ngokusho kwethiyori ka-Malus, amandla okukhanya okukhiphayo athi I=I0cos2α
Lapho: I-I0 imele amandla okukhanya adluliswe ama-polarizer amabili lapho indiza eyinhloko ihambisana; I-Alpha imele i-engeli phakathi kwezindiza eziyinhloko zama-polarizers.
1.4 Ukushintshwa kwemvamisa nobude begagasi
Umgomo wokusebenzisa izici zangaphandle ukuze uguqule imvamisa noma ubude begagasi bokukhanya nokulinganisa ubuningi bomzimba bangaphandle ngokuthola izinguquko kufrikhwensi noma ubude begagasi bokukhanya kubizwa ngokuthi i-frequency kanye ne-wavelength modulation yokukhanya.
Isikhathi sokuthumela: Aug-01-2023