Lub Optical modulator yog dab tsi?
Cov khoom siv kho qhov muagfeem ntau siv los tswj cov yam ntxwv ntawm lub teeb ci, xws li cov teeb laser. Lub cuab yeej tuaj yeem tswj cov yam ntxwv ntawm lub teeb, xws li lub zog kho qhov muag lossis theem. Modulator raws li qhov xwm txheej ntawm lub teeb modulated hu ualub zog modulator, theem modulator, polarization modulator, spatial Optical modulator, thiab lwm yam. Ntau hom modulators siv tau rau hauv ntau daim ntawv thov, xws li kev sib txuas lus fiber optic, cov khoom siv tso saib, Q-switched lossis mode-locked lasers, thiab kev ntsuas optical.
Hom kho qhov muag modulator
Muaj ntau hom modulators sib txawv:
1. Acousto-optic modulator yog ib qho modulator raws li acousto-optic effect. Lawv yog siv los hloov lossis kho qhov amplitude ntawm lub laser beam, hloov lub teeb zaus, lossis hloov qhov kev taw qhia ntawm qhov chaw.
2. Lubelectro-optic modulatorsiv cov nyhuv electro-optic hauv lub thawv Kerrs npuas. Lawv tuaj yeem hloov kho lub xeev polarization, theem, lossis lub zog beam, lossis siv rau kev rho tawm pulse raws li tau hais hauv ntu ntawm ultrashort pulse amplifiers.
3. Ib qho modulator nqus hluav taws xob yog ib qho modulator siv rau ntawm lub transmitter cov ntaub ntawv hauv kev sib txuas lus fiber ntau.
(4) Cov khoom siv cuam tshuam, xws li Mach-Zehnder modulators, feem ntau yog siv rau hauv cov voj voog sib xyaw ua ke rau kev xa cov ntaub ntawv kho qhov muag.
5. Cov khoom siv fiber optic modulators tuaj yeem ua raws li ntau yam ntsiab cai. Nws tuaj yeem yog lub cuab yeej fiber optic tiag tiag, lossis nws tuaj yeem yog lub cev muaj cov pigtails fiber.
6. Cov kua siv lead ua kua modulator yog tsim rau kev siv rau cov khoom siv tso saib pom kev lossis lub tshuab pulse shaper. Lawv kuj tseem siv tau ua cov khoom siv teeb pom kev zoo, uas txhais tau tias qhov kev sib kis sib txawv nrog qhov chaw, uas tuaj yeem siv rau hauv cov khoom siv tso saib.
7. Lub modulation disk tuaj yeem hloov lub zog ntawm lub beam tsis tu ncua, uas yog siv rau hauv qee qhov kev ntsuas optical tshwj xeeb (xws li siv cov lock-in amplifiers).
8. Cov khoom siv micromechanical (micromechanical systems, MEMS) xws li cov twj tso kua teeb uas siv silicon thiab cov iav ob sab yog qhov tseem ceeb heev hauv cov duab tso tawm.
9. Cov khoom siv kho qhov muag loj, xws li cov khoom siv hluav taws xob kho qhov muag, tuaj yeem siv thaj chaw loj thiab kuj tuaj yeem siv rau cov xwm txheej muaj zog siab. Cov khoom siv fiber txuas, feem ntau yog cov khoom siv waveguide nrog cov pigtails fiber, yooj yim rau kev koom ua ke rau hauv cov kab ke fiber optic.
Daim ntawv thov ntawm Optical modulator
Cov modulators optical muaj ntau yam kev siv hauv ntau qhov chaw. Cov hauv qab no yog cov cheeb tsam tseem ceeb ntawm Optical modulators thiab lawv cov ntawv thov tshwj xeeb:
1. Kev sib txuas lus optical: Hauv cov kab ke sib txuas lus optical, cov khoom siv optical modulators siv los hloov qhov amplitude, zaus thiab theem ntawm cov teeb liab optical kom xa cov ntaub ntawv. Nws feem ntau siv rau hauv cov kauj ruam tseem ceeb xws li photoelectrical conversion, optical signal modulation thiab demodulation. Electro-optic modulators yog qhov tseem ceeb tshwj xeeb hauv cov kab ke sib txuas lus optical ceev ceev, uas siv los hloov cov teeb liab hluav taws xob mus rau hauv cov teeb liab optical thiab ua kom cov ntaub ntawv encoding thiab kis tau. Los ntawm kev hloov qhov muaj zog lossis theem ntawm cov teeb liab optical, cov haujlwm ntawm kev hloov lub teeb, kev tswj tus nqi modulation thiab kev hloov pauv teeb liab tuaj yeem ua tiav.
2. Kev ntsuas qhov muag: Lub tshuab kho qhov muag tuaj yeem ua tiav qhov kev ntsuas thiab kev saib xyuas ib puag ncig los ntawm kev hloov kho cov yam ntxwv ntawm lub teeb liab kho qhov muag. Piv txwv li, los ntawm kev hloov kho theem lossis qhov loj ntawm lub teeb, fiber optic gyroscopes, fiber optic pressure sensors, thiab lwm yam tuaj yeem ua tiav.
3. Kev khaws cia thiab ua cov khoom siv optical: Cov khoom siv optical modulators siv rau kev khaws cia thiab kev siv cov khoom siv optical. Hauv kev nco optical, cov khoom siv optical modulators siv tau los sau thiab nyeem cov ntaub ntawv mus rau hauv thiab tawm ntawm cov khoom siv optical. Hauv kev ua cov khoom siv optical, cov khoom siv optical modulator siv tau rau kev tsim, lim, hloov kho thiab demodulation ntawm cov teeb liab optical.
4. Kev thaij duab kho qhov muag: cov khoom siv kho qhov muag tuaj yeem siv los hloov kho qhov theem thiab qhov loj ntawm lub teeb, yog li hloov cov yam ntxwv ntawm daim duab hauv kev thaij duab kho qhov muag. Piv txwv li, lub teeb teb modulator tuaj yeem siv ob-seem theem modulation los hloov qhov ntev focal thiab qhov tob ntawm lub teeb.
5. Kev tswj suab nrov ntawm lub teeb: Lub modulator kho qhov muag tuaj yeem tswj qhov muaj zog thiab zaus ntawm lub teeb, yog li txo lossis tshem tawm suab nrov ntawm lub teeb hauv lub cev kho qhov muag. Nws tuaj yeem siv rau hauv cov amplifiers kho qhov muag, lasers thiab fiber optic kis tau tus mob kom txhim kho qhov sib piv ntawm lub teeb liab thiab suab nrov thiab kev ua tau zoo ntawm lub cev.
6. Lwm yam kev siv: cov electro-optical modulators kuj siv rau hauv kev tshuaj xyuas spectral, radar systems, kev kuaj mob thiab lwm yam teb. Hauv spectroscopy, electro-optical modulator tuaj yeem siv ua ib feem ntawm lub tshuab ntsuas spectrum optical rau kev tshuaj xyuas spectral thiab kev ntsuas. Hauv radar system, electro-optic modulator siv rau kev hloov kho teeb liab thiab demodulation. Hauv kev kuaj mob, electro-optic modulators siv rau hauv kev thaij duab optical thiab kev kho mob.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-23-2024