Dab tsi yog tus modulator theem

Dab tsi yog ib qhotheem modulator

Phase modulator yog ib qho optical modulator uas tuaj yeem tswj tau theem ntawm lub teeb laser. Cov hom phase modulators feem ntau yog Pockels box-basedcov khoom siv hluav taws xob-optic modulatorsthiab cov khoom siv ua kua siv lead ua kua, uas kuj tuaj yeem siv qhov zoo ntawm kev hloov pauv ntawm cov thermal fiber refractive index lossis kev hloov pauv ntev, lossis los ntawm kev ncab kom hloov qhov ntev. Ntau yam khoom siv theem modulators siv rau hauv thaj chaw ntawm kev sib xyaw ua ke optics, qhov twg lub teeb modulated kis mus rau hauv lub waveguide.

Cov khoom tseem ceeb ntawm cov modulators theem suav nrog: Qhov loj ntawm qhov kev hloov kho theem (uas txiav txim siab qhov ntsuas kev hloov kho thiab lub zog sib piv ntawm sab) xav tau qhov tsav voltage modulation bandwidth (modulation frequency range), tuselectro-optical modulatoryog nyob rau hauv qhov kev txiav txim GHz, thiab lub cuab yeej siv cov nyhuv thermal lossis cov khoom siv siv lead ua kua yog tsawg dua li qhov bandwidth ua haujlwm ntawm lub cuab yeej aperture. Txwv lub beam radius ntawm lub beam modulated Sab nraud ntawm lub cuab yeej Cov khoom no sib txawv heev rau ntau hom theem modulators. Yog li ntawd, cov theem modulators sib txawv yuav tsum tau siv rau hauv cov ntawv thov sib txawv.

Piv txwv ntawm cov ntawv thov modulator theem suav nrog: Ib qho modulator theem hauv lub laser resonator ntawm ib lub laser ib zaug zaus tuaj yeem siv rau kev kho qhov ntev ntawm lub teeb, lossis hom kev xauv hom (FM hom-locking) ntawm lub laser kom theem lub teeb yog tias nws muaj qhov nruab nrab modulation, tuaj yeem siv rau hauv lub tshuab laser zaus stabilization, piv txwv li, Txoj kev Pell-Drever-Hall xav tau cov modulator theem hauv ntau lub cuab yeej ntsuas interferometer spectral, feem ntau siv cov teeb liab tsav tsheb tas li. Qee qhov kev ntsuas xav tau cov combs zaus, uas tau txais los ntawm qhov xwm txheej ib lub teeb ib zaug zaus rau hauv lub modulator theem. Hauv qhov no, qhov kev hloov kho theem feem ntau yuav tsum muaj zog, yog li koj tuaj yeem tau txais ntau cov kab sab. Hauv lub tshuab xa cov ntaub ntawv ntawm lub kaw lus sib txuas lus fiber ntau, lub modulator theem tuaj yeem siv los txiav txim siab cov ntaub ntawv xa mus. Piv txwv li, txoj kev hloov pauv theem-hloov pauv yog siv.