Taw qhia rauBalance Photodetector(Optoelectronic Balance Detector)
Balance Photodetector tuaj yeem muab faib ua fiber ntau optic coupling hom thiab spatial optical coupling hom raws li txoj kev kho qhov muag. Sab hauv, nws muaj ob lub photodiodes zoo sib xws, lub suab qis, siab bandwidth transimpedance amplifier circuit module, thiab lub suab nrov ultra-tsawg zog module. Nws muaj cov yam ntxwv ntawm hom kev tsis lees paub qhov sib piv, ultra-tsawg suab nrov, thiab siab bandwidth, thiab dav siv hauv kev sib txuas lus kho qhov muag. Nws tau dhau los ua qhov kev tshawb fawb hotspot rau cov lag luam thiab cov tsev kawm qib siab hauv ntau lub tebchaws hauv xyoo tas los no.
Lub hauv paus ntsiab lus ua haujlwm ntawm Balance Photodetector (Optoelectronic Balance Detector)
Lub Balance Photodetector siv ob lub photodiodes nyob rau hauv rov qab bias lub xeev raws li lub teeb tau txais. Thaum tau txais lub teeb liab lub teeb, lub photocurrent generated los ntawm ob lub photodiodes yog rho tawm thiab txuas mus rau lub transimpedance amplifier los hloov cov teeb liab tam sim no mus rau lub teeb liab voltage rau cov zis. Kev siv tus kheej txo cov qauv tuaj yeem ua rau muaj txiaj ntsig zoo ntawm cov teeb liab hom teeb liab qhia los ntawm lub zos oscillator lub teeb thiab tsaus nti tam sim no, ua kom cov teeb liab sib txawv, thiab rau qee qhov kev txhim kho kom pom lub peev xwm ntawm lub teeb tsis muaj zog.
Qhov zoo: Cov hom kev tsis lees paub qhov sib piv siab, siab rhiab heev, thiab siab nrhiav bandwidth tuaj yeem ua tau raws li ntau yam kev thov.
Qhov tsis zoo: Tsawg saturated optical fais fab tuag, tsuas yog tsim rau kev pom lub teeb tsis muaj zog, kev sib koom ua ke yuav tsum tau txhim kho.
FIG: Daim duab qhia kev ua haujlwm ntawm tus ntsuas ntsuas ntsuas
Kev ua haujlwm tsis zoo ntawm Balance Photodetector (OptoelectronicNtsuas ntsuas)
1. Teb
Kev teb yog hais txog kev ua haujlwm ntawm photodiode hauv kev hloov cov teeb liab teeb rau hauv photocurrent, uas yog qhov piv ntawm photocurrent mus rau lub teeb lub zog. Xaiv lub photodiode nrog lub luag haujlwm siab dua tuaj yeem txhim kho qhov rhiab heev ntawm Balance Photodetector.
Kev teb yog hais txog kev ua haujlwm ntawm photodiode hauv kev hloov cov teeb liab teeb rau hauv photocurrent, uas yog qhov piv ntawm photocurrent mus rau lub teeb lub zog. Xaiv lub photodiode nrog lub luag haujlwm siab dua tuaj yeem txhim kho qhov rhiab heev ntawm Balance Photodetector.
2. Bandwidth
Lub bandwidth sawv cev rau lub teeb liab zaus ntawm qhov tso zis teeb liab amplitude ntawm Balance Photodetector decays los ntawm -3dB, thiab muaj feem xyuam rau parasitic capacitance ntawm lub photodiode, qhov loj ntawm lub transimpedance, thiab qhov nce bandwidth khoom ntawm lub lag luam amplifier.
3. Hom kev tsis lees paub piv piv
Hom kev tsis lees paub qhov piv piv yog siv los ntsuas qhov ntsuas qhov ntsuas ntawm qhov kev txwv ntawm cov cim hom sib txawv los ntawm cov khoom sib npaug, thiab cov khoom lag luam feem ntau xav tau qhov tsawg kawg nkaus hom kev tsis lees paub ntawm 25dB.
4. NPE
Lub Hwj Chim Zoo Tshaj Plaws: Lub teeb liab tawm tswv yim xav tau ntawm lub teeb liab-rau-suab nrov piv ntawm 1, uas yog qhov tseem ceeb rau kev ntsuas lub suab nrov ntawm lub kaw lus. Cov khoom tseem ceeb ntawm cov khoom siv hluav taws xob sib npaug yog cov suab nrov nrov thiab cov suab nrov hluav taws xob.
Daim ntawv thov Balance Photodetector (Optoelectronic Balance Detector)
Nyob rau hauv xyoo tas los no, Balance Photodetector tau siv dav hauv cov teb xws li laser cua radar, laser vibration ntsuas, fiber optic sensing, tsis muaj zog lub teeb coherent nrhiav, spectral detection, gas detection, thiab lwm yam. txawv daim ntawv thov scenarios.
Post lub sij hawm: Feb-06-2025