Mndandanda wa Photodetector: Chiyambi cha Balance Photodetector

Chiyambi chaBalance Photodetector(Optoelectronic Balance Detector)
Balance Photodetector imatha kugawidwa mumtundu wa fiber optic coupling ndi mtundu wapakatikati wolumikizirana molingana ndi njira yolumikizirana. M'kati mwake, imakhala ndi ma photodiode awiri ofananira kwambiri, phokoso lotsika, moduli yozungulira ya bandwidth transimpedance amplifier, ndi gawo lamphamvu lamphamvu kwambiri. Ili ndi mawonekedwe a chiŵerengero cha kukana kwamtundu wapamwamba kwambiri, phokoso lapamwamba kwambiri, ndi bandwidth yapamwamba, ndipo imagwiritsidwa ntchito kwambiri pokhudzana ndi kulumikizana kogwirizana kwa kuwala. Yakhala malo opangira kafukufuku wamabizinesi ndi mayunivesite m'maiko osiyanasiyana m'zaka zaposachedwa.
Mfundo yogwira ntchito ya Balance Photodetector (Optoelectronic Balance Detector)
Balance Photodetector imagwiritsa ntchito ma photodiode awiri m'malo osakondera ngati gawo lolandila kuwala. Mukalandira chizindikiro chowunikira, chithunzithunzi chopangidwa ndi ma photodiode awiri chimachotsedwa ndikuphatikizidwa ndi transimpedance amplifier kuti asinthe siginecha yapano kukhala siginecha yamagetsi kuti itulutsidwe. Kugwiritsa ntchito kudzichepetsera kungathe kupondereza bwino chizindikiro chamtundu wamba chomwe chimayambitsidwa ndi kuwala kwa oscillator ndi mdima wakuda, kuonjezera chizindikiro chosiyana, komanso kupititsa patsogolo luso la kuzindikira kwa zizindikiro zofooka za kuwala.
Ubwino: Chiŵerengero cha kukana kwamtundu wapamwamba kwambiri, kukhudzika kwakukulu, ndi bandwidth yodziwikiratu imatha kukumana ndi zochitika zosiyanasiyana zogwiritsira ntchito.
Zoyipa: Mphamvu yamagetsi yotsika yotsika, yongoyenera kuzindikira kuwala kofooka, kuphatikiza kuyenera kukonzedwa.

CHITHUNZI: Chithunzi chojambula cha balance detector
Magawo a magwiridwe antchito a Balance Photodetector (OptoelectronicBalance Detector)
1. Kuyankha
Kuyankha kumatanthawuza mphamvu ya photodiode potembenuza ma siginecha a kuwala kukhala photocurrent, chomwe ndi chiŵerengero cha photocurrent ku mphamvu ya kuwala. Kusankha photodiode yokhala ndi kuyankha kwakukulu kumatha kukulitsa chidwi cha Balance Photodetector.
Kuyankha kumatanthawuza mphamvu ya photodiode potembenuza ma siginecha a kuwala kukhala photocurrent, chomwe ndi chiŵerengero cha photocurrent ku mphamvu ya kuwala. Kusankha photodiode yokhala ndi kuyankha kwakukulu kumatha kukulitsa chidwi cha Balance Photodetector.
2. Bandwidth
Bandwidth imayimira ma frequency azizindikiro pomwe kuchuluka kwa chizindikiro cha Balance Photodetector kumawola ndi -3dB, ndipo kumagwirizana ndi mphamvu ya parasitic ya photodiode, kukula kwa transimpedance, ndi phindu la bandwidth amplifier yogwira ntchito.
3. Common mode kukanidwa chiŵerengero
Common mode rejection ratio imagwiritsidwa ntchito kuyeza kuchuluka kwa kuponderezedwa kwa ma siginecha wamba ndi zowunikira zofananira, ndipo malonda nthawi zambiri amafuna kukana kochepera 25dB.
4.NEP
Mphamvu Yofanana ndi Phokoso: Mphamvu ya siginecha yolowera imafunika pamlingo wa 1, womwe ndi gawo lofunikira poyezera momwe phokoso limagwirira ntchito. Zigawo zazikulu za phokoso lodziwika bwino la detector ndi phokoso lobalalitsa kuwala ndi phokoso lamagetsi.

Kugwiritsa ntchito Balance Photodetector (Optoelectronic Balance Detector)
M'zaka zaposachedwa, Balance Photodetector yakhala ikugwiritsidwa ntchito kwambiri m'magawo monga laser wind radar, laser vibration measure, fiber optic sensing, kuwala kofooka kogwirizana, kuzindikira kowoneka bwino, kuzindikira mpweya, ndi zina zotero.