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 ibe i-electro-optic, thermooptic, acoustooptic, yonke i-optical, njll., isekelwe emfundisweni eyisisekelo izinhlobonhlobo zezinhlobo ezahlukene zomphumela we-electro-optic, umphumela we-acoustooptic, umphumela we-magnetooptic. , umphumela we-Franz-Keldysh, umphumela we-quantum we-Stark, umphumela wokuhlakazeka kwenkampani yenethiwekhi.
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 optical, kanti eyokugcina isetshenziselwa ikakhulukazi i-optical sensing.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 ubukhulu bokukhanya njengento eguquguqukayo, ukusetshenziswa kwezinto zangaphandle ukukala i-DC noma ukushintsha kancane kwesignali yokukhanya ibe ukuguqulwa kwemvamisa esheshayo yesiginali yokukhanya, ukuze isetshenziselwe ukukhetha imvamisa ye-AC khulisa, 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. ukufeza ukuguquguquka kwesigaba.
Ngenxa yokuthi umtshina wokukhanya ngokuvamile awukwazi ukubona ukuguqulwa kwesigaba segagasi lokukhanya, kufanele sisebenzise ubuchwepheshe bokuphazamiseka bokukhanya ukuze siguqule ukuguqulwa kwesigaba kube ukuguqulwa kokuqina kokukhanya, ukuze sifinyelele ukutholwa kobuningi bangaphandle bomzimba, 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