A lub tshuab ntes duabyog ib lub cuab yeej uas hloov cov teeb liab teeb liab mus rau hauv cov teeb liab hluav taws xob. Hauv ib qholub tshuab ntsuas duab semiconductor, tus neeg nqa khoom uas tsim los ntawm cov duab photon nkag mus rau hauv lub voj voog sab nraud nyob rau hauv qhov hluav taws xob bias thiab tsim cov photocurrent ntsuas tau. Txawm tias ntawm qhov teb siab tshaj plaws, tus pin photodiode tsuas tuaj yeem tsim tau ib khub ntawm cov khub electron-qhov ntawm qhov siab tshaj plaws, uas yog ib lub cuab yeej tsis muaj qhov nce sab hauv. Rau kev teb zoo dua, ib qhophotodiode av qeeg(apd) siv tau.
Qhov cuam tshuam ntawm apd ntawm photocurrent yog raws li qhov cuam tshuam ntawm ionization collision. Hauv qee qhov xwm txheej, cov electrons thiab qhov uas tau nrawm dua tuaj yeem tau txais lub zog txaus los sib tsoo nrog lub lattice los tsim ib khub tshiab ntawm cov khub electron-hole. Cov txheej txheem no yog ib qho kev sib txuas lus saw hlau, yog li ntawd cov khub electron-hole uas tsim los ntawm kev nqus lub teeb tuaj yeem tsim ntau tus khub electron-hole thiab tsim ib qho photocurrent loj. Yog li ntawd, apd muaj kev teb sai thiab kev nce sab hauv, uas txhim kho qhov sib piv ntawm lub teeb liab thiab suab nrov ntawm lub cuab yeej. apd feem ntau yuav siv rau hauv cov kab ke sib txuas lus fiber ntau lossis me dua nrog lwm yam kev txwv ntawm lub zog optical tau txais. Tam sim no, ntau tus kws tshaj lij ntawm cov khoom siv optical muaj kev cia siab zoo txog qhov kev cia siab ntawm apd.
Rofea tau tsim cov photodetector integrated photodiode thiab lub suab qis amplifier circuit, thaum muab ntau yam khoom, rau cov neeg siv kev tshawb fawb Muab cov kev pabcuam kho kom zoo nkauj, kev txhawb nqa kev siv tshuab thiab kev pabcuam tom qab muag yooj yim. Cov kab khoom tam sim no suav nrog: analog teeb liab photodetector nrog amplification, nce adjustable photodetector,lub tshuab ntes duab ceev ceev, lub tshuab ntes daus hauv khw (APD), lub tshuab ntes qhov sib npaug, thiab lwm yam.
Feature
Ntau yam spectral: 320-1000nm, 850-1650nm, 950-1650nm, 1100-1650nm, 1480-1620nm
3dBbandwidth: 200MHz-50GHz
Cov zis ntawm cov khoom siv fiber ntau optical 2.5Gbps
Hom modulator
3dBbandwidth:
200MHz, 1GHz, 10GHz, 20GHz, 50GHz
Daim Ntawv Thov
Kev kuaj pom lub zog ceev ceev
Kev sib txuas lus ceev ceev
Qhov txuas ntawm lub tshuab cua sov
Brillouin optical fiber sensing system
Lub sijhawm tshaj tawm: Lub Rau Hli-21-2023