Hanyoyin gwaji don aikin mai amfani da lantarki-optic

Hanyoyin gwaji don yin aikinelectrooptic modulator

1. Matakan gwajin gwajin rabin-kalaman donelectro-optic intensity modulator

Ɗaukar wutar lantarki ta rabin-girgiza a tashar RF a matsayin misali, tushen siginar, na'urar da ake gwadawa da oscilloscope an haɗa su ta hanyar na'ura ta hanyoyi uku. Lokacin gwada wutar lantarki ta rabin-girgiza a tashar Bias, haɗa shi gwargwadon layin da aka ɗigo.

b. Kunna tushen haske da tushen siginar, kuma yi amfani da siginar igiyar igiyar sawtooth (mitar gwaji na yau da kullun shine 1KHz) zuwa na'urar da ake gwadawa. Siginar igiyar sawtooth Vpp yakamata ya zama mafi girma fiye da sau biyu ƙarfin wutar lantarki.

c. Kunna oscilloscope;

d. Siginar fitarwa na mai gano siginar siginar cosine ce. Yi rikodin ƙimar ƙarfin igiyoyin sawtooth na V1 da V2 daidai da kololuwar da ke kusa da wannan siginar. e. Ƙirƙiri ƙarfin wutar lantarki na rabin-ƙara bisa ga Formula (3).

2. Gwaji matakai don rabin-kalaman ƙarfin lantarki naElectro-optic zamani modulator

Bayan haɗa tsarin gwajin, bambance-bambancen hanyar gani tsakanin hannaye biyu waɗanda ke samar da tsarin interferometer na gani dole ne su kasance cikin tsayin haɗin kai. An haɗa tushen siginar da tashar RF na na'urar da ke ƙarƙashin gwaji da kuma tashar 1 na oscilloscope ta hanyar na'ura ta hanyoyi uku. Bayan haɗa tsarin gwajin, bambance-bambancen hanyar gani tsakanin hannaye biyu waɗanda ke samar da tsarin interferometer na gani dole ne su kasance cikin tsayin haɗin kai. An haɗa tushen siginar da tashar RF na na'urar da ke ƙarƙashin gwaji da kuma tashar 1 na oscilloscope ta hanyar na'ura ta hanyoyi uku, kuma an daidaita tashar shigarwa na oscilloscope zuwa yanayin rashin ƙarfi.

b. Kunna Laser da tushen siginar, kuma yi amfani da siginar igiyar igiyar sawtooth na takamaiman mitar (ƙimar ƙima 50KHz) zuwa na'urar da ake gwadawa. Siginar fitarwa na mai gano siginar siginar cosine ce. Vpp na siginar igiyar sawtooth ya kamata ya fi sau biyu ƙarfin wutar lantarki na rabin-kalagu, amma kada ya wuce kewayon ƙarfin shigar da mai daidaitawa ya kayyade, ta yadda siginar cosine ɗin mai ganowa ya ba da aƙalla cikakken zagayowar.

c. Yi rikodin ƙimar ƙarfin wutar lantarki ta sawtooth V1 da V2 daidai da kololuwar da ke kusa da siginar cosine;

d. Ƙirƙiri ƙarfin wutar lantarki na rabin-ƙara bisa ga Formula (3).

3. Shigar da asarar na'urorin lantarki-optic

Gwaji matakai

Bayan haɗa tushen haske da polarizer, kunna tushen hasken kuma gwada shigar da ƙarfin gani na na'urar a ƙarƙashin gwaji tare da mitar wutar gani.

b. Haɗa na'urar da ke ƙarƙashin gwaji zuwa tsarin gwaji, kuma haɗa tashoshin fitarwa na samar da wutar lantarki da aka tsara zuwa fil 1 (GND) da 2 (Bias) namai daidaitawa(ga wasu batches na modulators, fil 1 na modulator shima yana buƙatar haɗawa da mahalli).

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

d. Idan na'urar da ake gwadawa na zamani ne, babu buƙatar ƙara wutar lantarki mai daidaita wutar lantarki. Ana iya karanta Pout kai tsaye daga mitar wutar gani.

e. Yi lissafin asarar sakawa bisa ga Formula (1).

Matakan kariya

a. Dole ne shigar da na'urar gani na na'urar motsa jiki ta lantarki kada ta wuce ƙimar daidaitawa akan rahoton gwaji; in ba haka ba, daEO modulatorza a lalace.

b. Dole ne shigar da RF na na'urar motsa jiki ta lantarki kada ta wuce ƙimar daidaitawa akan takardar gwajin; in ba haka ba, EO modulator zai lalace.

c. Lokacin kafa interferometer, akwai ingantattun buƙatu don yanayin amfani. Girgizawar muhalli da karkatar da fiber na gani na iya shafar sakamakon gwajin.