Kev siv thev naus laus zis ntawmelectro-optic modulator
Ib qho Electro-optic modulator (EOM modulator) yog ib qho khoom siv tswj lub teeb liab uas siv cov nyhuv electro-optic los hloov kho lub teeb ci. Nws txoj haujlwm feem ntau yog ua tiav los ntawm Pockels effect (Pockels effect, uas yog Pockels effect), uas siv qhov tshwm sim uas qhov refractive index ntawm cov khoom siv optical nonlinear hloov pauv raws li kev ua ntawm cov teb hluav taws xob.
Cov qauv yooj yim ntawm lub electro-optic modulator feem ntau muaj xws li siv lead ua (Pockels siv lead ua) nrog cov nyhuv electro-optical, thiab cov khoom siv feem ntau yog lithium niobate (LiNbO₃). Lub zog hluav taws xob uas xav tau los ua kom muaj kev hloov pauv theem hu ua Half-wave voltage. Rau Pockels siv lead ua, ntau pua lossis txawm tias ntau txhiab volts feem ntau xav tau, yog li ntawd qhov xav tau rau cov amplifiers siab-voltage. Lub voj voog hluav taws xob tsim nyog tuaj yeem hloov qhov hluav taws xob siab hauv ob peb nanoseconds, tso cai rau EOM siv ua lub zog hloov kho sai; Vim yog qhov xwm txheej capacitive ntawm Pockels siv lead ua, cov tsav tsheb no yuav tsum muab ntau yam tam sim no (hauv qhov xwm txheej ntawm kev hloov pauv sai lossis modulation, lub capacitance yuav tsum tau txo qis kom txo qhov poob zog). Hauv lwm qhov xwm txheej, xws li thaum tsuas yog me me amplitude lossis theem modulation xav tau, tsuas yog me me voltage xav tau rau modulation. Lwm cov khoom siv siv lead ua nonlinear siv hauv electro-optical modulators (EOM modulator) suav nrog potassium titanate (KTP), beta-barium borate (BBO, tsim nyog rau lub zog nruab nrab siab dua thiab/lossis cov zaus hloov pauv siab dua), lithium tantalate (LiTaO3), thiab ammonium phosphate (NH4H2PO4, ADP, nrog cov khoom siv hluav taws xob tshwj xeeb).
Cov khoom siv hluav taws xob-optic modulators (EO modulator) qhia txog kev siv tau zoo hauv ntau qhov chaw siv high-tech:
1. Kev sib txuas lus fiber ntau: Hauv cov tes hauj lwm sib txuas lus niaj hnub no, cov modulators electro-optical (EO modulator) yog siv los hloov cov teeb liab pom kev, kom ntseeg tau tias kev xa cov ntaub ntawv zoo thiab txhim khu kev qha hla kev deb. Los ntawm kev tswj hwm qhov theem lossis qhov loj ntawm lub teeb, kev xa cov ntaub ntawv ceev ceev thiab muaj peev xwm loj tuaj yeem ua tiav.
2. Kev ntsuas qhov tseeb: Lub tshuab electro-optical modulator hloov kho lub teeb pom kev hauv lub spectrometer kom txhim kho qhov tseeb ntawm kev ntsuas. Los ntawm kev hloov kho qhov zaus lossis theem ntawm lub teeb liab optical sai sai, kev tshuaj xyuas thiab kev txheeb xyuas cov khoom siv tshuaj lom neeg tuaj yeem txhawb nqa, thiab kev daws teeb meem thiab kev nkag siab ntawm kev ntsuas spectral tuaj yeem txhim kho.
3. Kev ua cov ntaub ntawv kho qhov muag zoo: electro-optical modulator hauv lub tshuab xam zauv kho qhov muag thiab cov txheej txheem ua cov ntaub ntawv, los ntawm kev hloov kho lub sijhawm tiag tiag ntawm cov teeb liab kho qhov muag los txhim kho kev ua cov ntaub ntawv ceev thiab kev ywj pheej. Nrog rau cov lus teb ceev ceev ntawm EOM, kev ua cov ntaub ntawv kho qhov muag ceev thiab qis-latency thiab kev sib kis tuaj yeem ua tiav.
4. Kev siv tshuab laser: Lub electro-optic modulator tuaj yeem tswj tau theem thiab qhov loj ntawm lub teeb laser, muab kev txhawb nqa rau kev thaij duab tseeb, kev ua laser thiab lwm yam kev siv. Los ntawm kev hloov kho cov kev cai ntawm lub teeb laser kom raug, kev ua laser zoo tuaj yeem ua tiav.
Lub sijhawm tshaj tawm: Lub Ib Hlis-07-2025