Hanyoyin gwaji don aikin mai daidaita electro-optic

Hanyoyin gwaji don aiwatar dana'urar sarrafa na'urar lantarki (electro-optical modulator)

1. Matakan gwajin ƙarfin lantarki na rabin-rabi donna'urar auna ƙarfin lantarki ta lantarki (electro-optical extensive modulator)

Idan aka ɗauki ƙarfin rabin-wave a tashar RF a matsayin misali, tushen siginar, na'urar da ake gwadawa da kuma oscilloscope an haɗa su ta hanyar na'urar hanyoyi uku. Lokacin gwada ƙarfin rabin-wave a tashar Bias, haɗa shi bisa ga layin dige-dige.

b. Kunna tushen haske da tushen sigina, sannan a shafa siginar raƙuman haƙori (mitar gwajin da aka saba yi shine 1KHz) ga na'urar da ake gwadawa. Siginar raƙuman haƙori Vpp ya kamata ya fi ƙarfin rabin-wave sau biyu.

c. Kunna na'urar hangen nesa ta oscilloscope;

d. Siginar fitarwa ta na'urar gano siginar cosine ce. Yi rikodin ƙimar ƙarfin wutar lantarki na raƙuman sawu V1 da V2 waɗanda suka dace da kololuwa da magudanar ruwa da ke kusa da wannan siginar. e. Lissafa ƙarfin wutar lantarki na rabin-wave bisa ga Tsarin (3).

2. Matakan gwaji don ƙarfin lantarki na rabin-wavemai daidaita yanayin electro-optical

Bayan haɗa tsarin gwajin, bambancin hanyar gani tsakanin hannaye biyu da suka samar da tsarin interferometer na gani dole ne ya kasance cikin tsawon haɗin kai. Tushen siginar da tashar RF na na'urar da ake gwadawa da kuma tashar 1 na oscilloscope ana haɗa su ta hanyar na'ura mai hanyoyi uku. Bayan haɗa tsarin gwajin, bambancin hanyar gani tsakanin hannaye biyu da suka samar da tsarin interferometer na gani dole ne ya kasance cikin tsawon haɗin kai. Tushen siginar da tashar RF na na'urar da ake gwadawa da kuma tashar 1 na oscilloscope ana haɗa su ta hanyar na'ura mai hanyoyi uku, kuma tashar shigarwa ta oscilloscope ana daidaita ta zuwa yanayin juriya mai ƙarfi.

b. Kunna laser da tushen siginar, sannan a shafa siginar raƙuman haƙori na wani mita (ƙimar yau da kullun 50KHz) a kan na'urar da ake gwaji. Siginar fitarwa ta na'urar gano siginar cosine ce. Vpp na siginar raƙuman haƙori ya kamata ya fi ninki biyu na ƙarfin rabin-wave, amma bai wuce kewayon ƙarfin shigarwar da mai daidaitawa ya ƙayyade ba, don haka siginar fitowar cosine na na'urar ganowa ta gabatar da aƙalla cikakken zagaye ɗaya.

c. Yi rikodin ƙimar ƙarfin wutar lantarki na raƙuman sawa V1 da V2 waɗanda suka yi daidai da kololuwa da magudanar ruwa da ke kusa da siginar cosine;

d. Lissafa ƙarfin lantarki na rabin-wave bisa ga Tsarin (3).

3. Asarar shigar da na'urorin daidaita wutar lantarki (electro-optical modulators)

Matakan gwaji

Bayan haɗa tushen haske da polarizer, kunna tushen haske kuma gwada ƙarfin shigarwar Pi na na'urar da aka gwada ta amfani da na'urar auna wutar lantarki.

b. Haɗa na'urar da ake gwadawa zuwa tsarin gwaji, sannan a haɗa tashoshin fitarwa na samar da wutar lantarki da aka tsara zuwa fil 1 (GND) da 2(Bias) namai daidaita(ga wasu rukunin masu gyaran fuska, fil na 1 na mai gyaran fuska yana buƙatar a haɗa shi da wurin).

c. Daidaita ƙarfin fitarwa na wutar lantarki da aka tsara kuma gwada matsakaicin karatun mitar wutar lantarki ta gani kamar Pout.

d. Idan na'urar da ake gwadawa ita ce na'urar daidaita ƙarfin lantarki, babu buƙatar ƙara wutar lantarki mai daidaita ƙarfin lantarki. Ana iya karanta Pout kai tsaye daga na'urar auna wutar lantarki ta gani.

e. Lissafa asarar shigarwa bisa ga Tsarin (1).

Matakan kariya

a. Shigarwar gani ta na'urar daidaita hasken lantarki (electro-optic modulator) bai kamata ta wuce ƙimar daidaitawar da ke cikin rahoton gwaji ba; in ba haka ba,EO modulatorza a lalace.

b. Shigarwar RF na na'urar auna hasken lantarki (electro-optic modulator) bai kamata ta wuce ƙimar daidaitawar da ke kan takardar gwaji ba; in ba haka ba, na'urar auna hasken lantarki (EO modulator) za ta lalace.

c. Lokacin da ake saita na'urar auna zafin jiki (interferometer), akwai buƙatu masu yawa ga yanayin amfani. Girgizar muhalli da kuma girgiza zare na gani na iya shafar sakamakon gwajin.