Cov kev sim rau kev ua haujlwm ntawm electro-optic modulator

Cov kev sim rau kev ua haujlwm ntawmelectro-optic modulator

1. Ib nrab-yoj voltage xeem cov kauj ruam rauelectro-optic siv zog modulator

Noj ib nrab-yoj voltage ntawm lub davhlau ya nyob twg RF ua piv txwv, lub teeb liab qhov chaw, cov cuab yeej nyob rau hauv kev sim thiab oscilloscope yog kev cob cog rua los ntawm ib tug peb-txoj kev ntaus ntawv. Thaum kuaj ib nrab-yoj voltage ntawm Bias davhlau ya nyob twg, txuas nws raws li cov kab dotted.

b. Tig rau lub teeb ci thiab teeb liab qhov chaw, thiab siv lub teeb liab sawtooth yoj (qhov kev sim zaus zaus yog 1KHz) rau lub cuab yeej hauv kev sim. Lub sawtooth yoj teeb liab Vpp yuav tsum ntau dua ob zaug ntawm ib nrab-yoj voltage.

c. Qhib lub oscilloscope;

d. Lub teeb liab tso zis ntawm lub ntes yog lub teeb liab cosine. Sau cov sawtooth yoj voltage qhov tseem ceeb V1 thiab V2 coj mus rau cov nyob ib sab peaks thiab troughs ntawm lub teeb liab no. e. Xam qhov ib nrab-yoj voltage raws li Formula (3).

2. Kuaj cov kauj ruam rau ib nrab-yoj voltage ntawmelectro-optic theem modulator

Tom qab kev sib txuas ntawm qhov kev sim, txoj kev kho qhov muag sib txawv ntawm ob txhais caj npab uas tsim cov qauv kho qhov muag interferometer yuav tsum nyob rau hauv qhov ntev coherence. Lub teeb liab qhov chaw thiab lub davhlau ya nyob twg RF ntawm lub cuab yeej nyob rau hauv kev sim nrog rau channel 1 ntawm oscilloscope yog txuas nrog los ntawm peb txoj kev ntaus ntawv. Tom qab kev sib txuas ntawm qhov kev sim, txoj kev kho qhov muag sib txawv ntawm ob txhais caj npab uas tsim cov qauv kho qhov muag interferometer yuav tsum nyob rau hauv qhov ntev coherence. Lub teeb liab qhov chaw thiab RF lub davhlau ya nyob twg ntawm lub cuab yeej nyob rau hauv kev sim nrog rau channel 1 ntawm oscilloscope yog kev cob cog rua los ntawm ib tug peb-txoj kev ntaus ntawv, thiab lub input chaw nres nkoj ntawm lub oscilloscope yog hloov mus rau ib tug high-impedance xeev.

b. Qhib lub laser thiab teeb liab qhov chaw, thiab siv lub sawtooth yoj teeb liab ntawm qee zaus (tus nqi raug 50KHz) rau lub cuab yeej hauv kev sim. Lub teeb liab tso zis ntawm lub ntes yog lub teeb liab cosine. Lub Vpp ntawm sawtooth yoj teeb liab yuav tsum ntau tshaj ob zaug ntawm ib nrab-yoj voltage, tab sis tsis pub tshaj qhov input voltage ntau teev los ntawm lub modulator, thiaj li hais tias cov zis cosine teeb liab ntawm lub detector muaj tsawg kawg yog ib lub voj voog.

c. Sau cov sawtooth yoj voltage qhov tseem ceeb V1 thiab V2 coj mus rau qhov chaw ncov thiab troughs ntawm cosine teeb liab;

d. Xam qhov ib nrab-yoj voltage raws li Formula (3).

3. Insertion poob ntawm electro-optic modulators

Kuaj cov kauj ruam

Tom qab txuas lub teeb qhov chaw thiab lub polarizer, tig rau lub teeb qhov chaw thiab sim cov tswv yim kho qhov muag lub zog Pi ntawm lub cuab yeej hauv kev sim nrog lub ntsuas hluav taws xob kho qhov muag.

b. Txuas lub cuab yeej nyob rau hauv kev sim mus rau qhov kev xeem, thiab txuas cov zis terminals ntawm cov tswj fais fab mov mus rau tus pins 1 (GND) thiab 2 (Bias) ntawm lubmodulator(rau qee cov khoom siv ntawm cov khoom siv, tus pin 1 ntawm lub modulator kuj yuav tsum tau txuas nrog lub tsev).

c. Kho qhov tso zis hluav taws xob ntawm cov khoom siv hluav taws xob tswj hwm thiab ntsuas qhov siab tshaj plaws nyeem ntawv ntawm lub ntsuas hluav taws xob kho qhov muag raws li Pout.

d. Yog hais tias lub cuab yeej nyob rau hauv kev sim yog ib theem modulator, tsis tas yuav ntxiv ib tug voltage stabilizing fais fab mov. Lub Pout tuaj yeem nyeem ncaj qha los ntawm lub ntsuas hluav taws xob kho qhov muag.

e. Xam qhov poob qhov poob raws li Formula (1).

Cov kev ceev faj

a. Cov tswv yim kho qhov muag ntawm electro-optic modulator yuav tsum tsis txhob tshaj qhov ntsuas tus nqi ntawm daim ntawv xeem; txwv tsis pub, covEO modulatoryuav puas.

b. RF input ntawm lub electro-optic modulator yuav tsum tsis txhob tshaj tus nqi calibration ntawm daim ntawv xeem; txwv tsis pub, EO modulator yuav puas.

c. Thaum teeb tsa tus interferometer, muaj cov kev xav tau siab heev rau kev siv ib puag ncig. Ib puag ncig co thiab optical fiber swaying tuaj yeem cuam tshuam rau qhov kev xeem.