Imodyuli yokukhanya, esetyenziselwa ukulawula ukukhanya kokukhanya, ukuhlelwa kwe-electro-optic, i-thermooptic, i-acoustooptic, yonke i-optical, i-theory esisiseko ye-electro-optic effect.
Imodyuli ye-Optical yenye yezona zixhobo zibalulekileyo ezidityanisiweyo ze-optical kunxibelelwano lwe-optical olukhawulezayo kunye nolufutshane. Imodyuli yokukhanya ngokomgaqo wayo wokumodareyitha, inokwahlulwa ibe yi-electro-optic, thermooptic, acoustooptic, yonke i-optical, njl., zisekwe kwithiyori esisiseko ziintlobo ezahlukeneyo zempembelelo ye-electro-optic, i-acoustooptic effect, i-magnetooptic effect. , Impembelelo yeFranz-Keldysh, i-quantum kakuhle I-Stark effect, i-carrier dispersion effect.
Iimodyuli ye-electro-opticalsisixhobo esilawula isalathiso se-refractive, i-absorptivity, i-amplitude okanye isigaba sokukhanya okuphumayo ngokutshintsha kwamandla ombane okanye indawo yombane. Iphezulu kunezinye iintlobo zeemodyuli ngokwelahleko, ukusetyenziswa kwamandla, isantya kunye nokudibanisa, kwaye ikwayeyona modulator isetyenziswa kakhulu ngoku. Kwinkqubo yokuhanjiswa kwe-optical, ukuhanjiswa kunye nokwamkelwa, i-modulator ye-optical isetyenziselwa ukulawula ukukhanya kokukhanya, kwaye indima yayo ibaluleke kakhulu.
Injongo yokuguqulwa kokukhanya kukuguqula isignali efunwayo okanye ulwazi oludlulisiweyo, kubandakanywa "ukuphelisa isignali yangasemva, ukuphelisa ingxolo, kunye nokuchasana nokuphazamiseka", ukwenzela ukuba kube lula ukusetyenzwa, ukuhambisa kunye nokufumanisa.
Iindidi zokumodareyitha zinokwahlulwa zibe ziindidi ezimbini ezibanzi ngokuxhomekeke apho ulwazi lulayishwe khona kumaza okukhanya:
Enye ngamandla okuqhuba omthombo wokukhanya ahlengahlengiswe ngumqondiso wombane; Enye kukumodareyitha usasazo ngokuthe ngqo.
Eyangaphambili isetyenziswa ikakhulu kunxibelelwano lwe-optical, kwaye le yokugqibela isetyenziswa ikakhulu kwi-optical sensing. Ngokufutshane: ukumodareyitha kwangaphakathi kunye nokuguqulwa kwangaphandle.
Ngokwendlela yokumodareyitha, uhlobo lokumodareyitha lu:
3) Ukumodareyithwa kwePolarization;
4) Ukuphindaphinda kunye nokuguqulwa kwamaza.
1.1, ukumodareyitha kokuqina
Ukumodareyitha kokukhanya kokukhanya bubunzulu bokukhanya njengento yokumodareyitha, ukusetyenziswa kwezinto zangaphandle ukulinganisa i-DC okanye utshintsho olucothayo lomqondiso wokukhanya kwinguqu ekhawulezayo yomqondiso wokukhanya, ukuze i-AC yokukhetha i-amplifier yokukhetha isetyenziswe yandisa, kwaye emva koko isixa-mali siza kulinganiswa ngokuqhubekayo.
1.2, ukumodareyithwa kwesigaba
Umgaqo wokusebenzisa izinto zangaphandle ukuguqula isigaba samaza okukhanya kunye nokulinganisa ubuninzi bomzimba ngokubona utshintsho lwesigaba lubizwa ngokuba yi-optical phase modulation.
Isigaba sokukhanya kokukhanya sichongwa ngubude bomzimba bokusasazwa kokukhanya, isalathiso se-refractive se-propagation medium kunye nokusabalalisa kwayo, oko kukuthi, utshintsho lwesigaba sokukhanya kwelanga lunokuveliswa ngokuguqula iiparamitha ezingentla. ukuphumeza ukumodareyithwa kwesigaba.
Ngenxa yokuba i-detector yokukhanya ngokubanzi ayikwazi ukuqonda utshintsho lwesigaba sokukhanya kokukhanya, kufuneka sisebenzise iteknoloji yokuphazamiseka kokukhanya ukuguqula utshintsho lwesigaba ekutshintsheni ukukhanya kokukhanya, ukwenzela ukuba kufumaneke ukufumanisa ubuninzi bomzimba wangaphandle, ngoko ke , ukumodareyitha kwesigaba se-optical kufuneka kubandakanye iinxalenye ezimbini: enye yindlela ebonakalayo yokuvelisa utshintsho lwesigaba sokukhanya kokukhanya; Okwesibini kukuphazamiseka kokukhanya.
1.3. Ukumodareyitha kwePolarization
Eyona ndlela ilula yokufezekisa ukumodareyithwa kokukhanya kukujikelezisa iipolarizers ezimbini xa zithelekiswa enye kwenye. Ngokutsho kwethiyori kaMalus, ukukhanya okuphumayo ngu-I=I0cos2α
Apho: I-I0 imele ukukhanya kokukhanya okugqitywe ngama-polarizers amabini xa indiza eyintloko ihambelana; I-Alpha imele i-Engile phakathi kweenqwelo-moya eziphambili ze-polarizers.
1.4 Ukumodareyitha okuphindaphindwayo kunye nobude bewavelength
Umgaqo wokusebenzisa izinto zangaphandle ukuguqula ukuphindaphinda okanye ubude bezantyalantyala zokukhanya kunye nokulinganisa ubungakanani bomzimba bangaphandle ngokubona utshintsho kuphindaphindo okanye ubude bokukhanya kokukhanya kubizwa ngokuba ngamaza okukhanya kunye nokuguqulwa kwamaza okukhanya.
Ixesha lokuposa: Aug-01-2023