Iindlela zokuvavanya ukusebenza kweimodyuli ye-electro-optic
1. Amanyathelo ovavanyo lwesiqingatha sombane wesiqingatha sombane weimodyuli ye-electro-optic intensity
Ukuthatha isiqingatha sombane wamaza kwitheminali yeRF njengomzekelo, umthombo wophawu, isixhobo esiphantsi kovavanyo kunye neoscilloscope ziqhagamshelwe ngesixhobo esineendlela ezintathu. Xa uvavanya i-half-wave voltage kwi-terminal ye-Bias, yidibanise ngokomgca onamachaphaza.
b. Vula umthombo wokukhanya kunye nomthombo womqondiso, kwaye usebenzise isignali yamaza e-sawtooth (i-frequency test frequency yi-1KHz) kwisixhobo esiphantsi kovavanyo. Isiginali ye-sawtooth wave Vpp kufuneka ibe nkulu kunesiqingatha sombane ophindwe kabini.
c. Vula i-oscilloscope;
d. Umqondiso wemveliso wesixhobo ngumqondiso we-cosine. Rekhoda i-sawtooth wave voltage values V1 kunye ne-V2 ehambelana neencopho ezikufutshane kunye nemijelo yalo mqondiso. e. Bala umbane wesiqingatha samaza ngokweFomula (3).
2. Amanyathelo ovavanyo lwesiqingatha sombane wamazaimodyuli yesigaba se-electro-optic
Emva kokudibanisa inkqubo yokuvavanya, umehluko wendlela ye-optical phakathi kweengalo ezimbini ezenza isakhiwo se-interferometer optical kufuneka sibe ngaphakathi kobude bokuhambelana. Umthombo wesignali kunye netheminali yeRF yesixhobo esiphantsi kovavanyo kunye netshaneli 1 ye oscilloscope ziqhagamshelwe ngesixhobo esineendlela ezintathu. Emva kokudibanisa inkqubo yokuvavanya, umehluko wendlela ye-optical phakathi kweengalo ezimbini ezenza isakhiwo se-interferometer optical kufuneka sibe ngaphakathi kobude bokuhambelana. Umthombo wophawu kunye netheminali yeRF yesixhobo esiphantsi kovavanyo kunye netshaneli yoku-1 ye-oscilloscope ziqhagamshelwe ngesixhobo esinendlela-ntathu, kwaye izibuko lokufaka i-oscilloscope lilungelelaniswe kwimeko ye-impedance ephezulu.
b. Vula i-laser kunye nomthombo wesignali, kwaye usebenzise isignali ye-sawtooth wave yefrikhwensi ethile (ixabiso eliqhelekileyo 50KHz) kwisixhobo esiphantsi kovavanyo. Umqondiso wemveliso wesixhobo ngumqondiso we-cosine. I-Vpp yesiginali ye-sawtooth wave kufuneka ibe nkulu kuphindwe kabini i-half-wave voltage, kodwa ingagqithisi kuluhlu lwe-voltage yegalelo elichazwe yimodyuli, ukwenzela ukuba i-cosine signal ye-cosine ye-detector ibonise ubuncinane umjikelo omnye opheleleyo.
c. Rekhoda amaxabiso ombane we-sawtooth i-V1 kunye ne-V2 ehambelana neencopho ezikufutshane kunye nemijelo yomqondiso we-cosine;
d. Bala umbane wesiqingatha samaza ngokweFomula (3).
3. Ukufakwa kwelahleko yeemodyuli ze-electro-optic
Amanyathelo ovavanyo
Emva kokudibanisa umthombo wokukhanya kunye ne-polarizer, vula umthombo wokukhanya kwaye uvavanye igalelo lamandla optical Pi yesixhobo esiphantsi kovavanyo kunye nemitha yamandla optical.
b. Qhagamshela isixhobo phantsi kovavanyo kwinkqubo yovavanyo, kwaye uqhagamshele iitheminali zemveliso zonikezelo lwamandla olulawulwayo kwizikhonkwane 1 (GND) kunye ne-2 (Bias) yeimodyuli(kwezinye iibhetshi zeemodyuli, ipini ye-1 yemodyuli nayo ifuna ukuqhagamshelwa kwizindlu).
c. Lungisa umbane wokuphuma kombane olawulwayo kwaye uvavanye ubuninzi bokufunda imitha yamandla ombane njengePout.
d. Ukuba isixhobo esiphantsi kovavanyo yimodyuli yesigaba, akukho mfuneko yokongeza i-voltage stabilizing power supply. I-Pout inokufundwa ngokuthe ngqo kwimitha yamandla optical.
e. Bala ilahleko yokufaka ngokweFomula (1).
Ukulumkela
a. Igalelo le-optical ye-electro-optic modulator akufanele lidlule ixabiso lokulinganisa kwingxelo yovavanyo; kungenjalo, iImodyuli ye-EOiya konakaliswa.
b. Igalelo le-RF yemodyuli ye-electro-optic kufuneka lingagqithi ixabiso lokulinganisa kwiphepha lovavanyo; ngaphandle koko, imodyuli ye-EO iya konakala.
c. Xa useka i-interferometer, kukho iimfuno eziphezulu zokusetyenziswa kwendawo. Ukushukuma kokusingqongileyo kunye ne-fiber optical swaying kunokuchaphazela zombini iziphumo zovavanyo.
Ixesha lokuposa: Aug-05-2025