Umgaqo wokusebenza we-commonimodyuli yokuqina
Umgaqo wee-intensive modulators uyahluka ngokuxhomekeke kuhlobo. Le ilandelayo yimigaqo yokusebenza yee-common intensity modulators:
1. I-Mach Zehnder Intensity Modulator (I-MZM Modulator)
Umgaqo oyintloko: Usekelwe kwisiphumo sokuphazamiseka kokukhanya. Umgaqo weukuguquguquka kobunzulu be-electro-optickukusebenzisa isiphumo se-electro-optic seekristale kunye nokufezekisa i-intensity modulation esekelwe kumgaqo wokuphazamiseka kokukhanya oku-polarized. Isiphumo se-electro-optic sekristale sibhekisa kwinto apho i-refractive index yekristale itshintsha phantsi kwesenzo sentsimi yombane yangaphandle, nto leyo ebangela umahluko wesigaba phakathi kokukhanya okudlula kwikristale kwiindlela ezahlukeneyo ze-polarized, ngaloo ndlela kutshintsha imeko ye-polarized yokukhanya.
Inkqubo yokusebenza:
Isibane sokufaka sahlulwe saba ziindlela ezimbini nge-beam splitter kwaye sidlula kwiingalo ezimbini ze-waveguide ngokulandelanayo.
Ukusebenzisa i-voltage yangaphandle kwingalo enye okanye zombini kunye nokusebenzisa i-electro-optic effect (njenge-linear electro-optic effect ye-lithium niobate crystal) ukutshintsha i-refractive index ye-waveguide, ngaloo ndlela kutshintsha isigaba se-light wave kwiingalo.
Imisebe emibini yokukhanya idityaniswe kwakhona ekupheleni kwesiphumo, kwaye ngenxa yokwahluka kwesigaba, ukuphazamiseka kweziphumo zokwakha okanye ezonakalisayo kunokwenzeka, okubangela utshintsho kubunzulu bokukhanya kwesiphumo kunye ne-voltage.
Xa umahluko wesigaba phakathi kweengalo ezimbini ingu-0, amandla okukhanya okuphumayo akwinqanaba eliphezulu (kwimeko "yokuvuliwe"); Xa umahluko wesigaba ungu-π, amandla okukhanya okuphumayo ancitshiswa (kwimeko "yokucima"), oku kufezekisa ukuguqulwa kwamandla.
2. I-Electro Absorption Intensity Modulator (EAM)
Umgaqo oyintloko: Ukusebenzisa isiphumo sokufunxwa kwe-electroabsorption sezinto ze-quantum well.
Inkqubo yokusebenza:
Ukusebenzisa intsimi yombane yangaphandle kwizinto ze-semiconductor ze-quantum well kutshintsha i-coefficient yokufunxa kwezinto.
Xa ukukhanya kudlula kwizinto, ubunzulu bako buyatshintsha ngenxa yotshintsho kwi-absorption coefficient, ngaloo ndlela kufikelela kwi-light intensity modulation.
Ngokwesiqhelo ifuna ucalucalulo oluchaseneyo, kwaye isignali yombane engenayo inobudlelwane obuhambelanayo nokukhanya okuphumayo, nto leyo eyenza ifaneleke kunxibelelwano lwe-optical olukhawulezayo.
3.i-modulator ye-acousto-optic intensity
Umgaqo oyintloko: Usekelwe kwisiphumo se-acousto-optic.
Inkqubo yokusebenza:
Yenza amaza e-ultrasonic kwikristale ukuze wenze i-grating enotshintsho lwe-refractive index oluqhubekayo.
Xa ukukhanya kudlula kwi-grating, kwenzeka i-diffraction, kwaye amandla okukhanya okudityanisiweyo anxulumene namandla amaza e-ultrasonic. Ngokulawula amandla okanye i-frequency yamaza e-ultrasonic, amandla okukhanya okuphumayo anokuguqulwa.
4. Imodulator yobunzulu bekristale yolwelo
Umgaqo oyintloko: Ukusebenzisa uphawu lwekristale yolwelo olutshintsha indlela oluhamba ngayo phantsi kombane.
Inkqubo yokusebenza:
Indlela yokulungelelanisa iimolekyuli zekristale yolwelo iyatshintsha xa isenziwa yintsimi yombane, nto leyo echaphazela ukuhanjiswa kokukhanya.
Ngokusebenzisa ii-voltage ezahlukeneyo ukulawula ukuhanjiswa kweekristale zolwelo, amandla okukhanya okuphumayo ayaguqulwa, nto leyo esetyenziswa kakhulu kwiindawo zokubonisa kunye nemifanekiso.
Iindidi ezahlukeneyo zeemodulators zoxinzelelo zineempawu zazo ngokwemigaqo, ukusebenza, kunye neemeko zokusetyenziswa, kwaye uhlobo olufanelekileyo kufuneka lukhethwe ngokweemfuno ezithile.
Ixesha leposi: Epreli-22-2026