Jerin Mai gano Hoto: Gabatarwa zuwa Ma'aunin Hoto

Gabatarwa zuwaMa'auni Photodetector(Optoelectronic Balance Detector)
Ana iya raba ma'auni Photodetector zuwa nau'in haɗin haɗin fiber na gani da nau'in haɗaɗɗiyar sararin samaniya bisa ga hanyar haɗin kai. A ciki, ya ƙunshi photodiodes guda biyu da suka dace sosai, ƙaramar amo, babban juzu'i mai ɗaukar nauyi mai ɗaukar nauyi na bandwidth, da tsarin ƙaramar ƙaramar amo. Yana da halaye na ƙaƙƙarfan ƙiyayyar yanayin gama gari, ƙaramar ƙaranci, da babban bandwidth, kuma ana amfani da ita sosai a fagen sadarwa na gani. Ya zama wurin bincike ga kamfanoni da jami'o'i a kasashe daban-daban a cikin 'yan shekarun nan.
Ka'idar aiki na Balance Photodetector (Optoelectronic Balance Detector)
Ma'auni Photodetector yana amfani da photodiodes guda biyu a cikin juyar da yanayin son zuciya azaman naúrar karɓar haske. Lokacin karɓar siginar haske, ana cire photocurrent da photodiodes guda biyu ke samarwa kuma ana haɗe shi zuwa amplifier mai ɗaukar nauyi don canza siginar yanzu zuwa siginar lantarki don fitarwa. Amfani da tsarin rage kai na iya murkushe siginar yanayin gama gari wanda hasken oscillator na gida da duhu duhu ya gabatar, yana haɓaka siginar yanayin banbanta, kuma zuwa wani lokaci yana haɓaka ikon gano siginar haske mai rauni.
Abũbuwan amfãni: Matsakaicin ƙin yarda da yanayin gama gari, babban hankali, da babban bandwidth ganowa na iya saduwa da yanayin aikace-aikacen daban-daban.
Lalacewa: Ƙarƙashin cikakken ikon gani, dace kawai don gano haske mai rauni, haɗin kai yana buƙatar haɓakawa.

FIG: Tsarin aiki na mai gano ma'auni
Siffofin ayyuka na Balance Photodetector (OptoelectronicMai gano ma'auni)
1. Amsa
Amsa yana nufin ingancin photodiode wajen canza siginar haske zuwa photocurrent, wanda shine rabon photocurrent zuwa hasken wuta. Zaɓin photodiode tare da babban ra'ayi na iya inganta yadda ya dace na Ma'auni na Photodetector.
Amsa yana nufin ingancin photodiode wajen canza siginar haske zuwa photocurrent, wanda shine rabon photocurrent zuwa hasken wuta. Zaɓin photodiode tare da babban ra'ayi na iya inganta yadda ya dace na Ma'auni na Photodetector.
2. Bandwidth
bandwidth yana wakiltar siginar siginar wanda girman siginar fitarwa na Balance Photodetector ya lalace ta -3dB, kuma yana da alaƙa da ƙarfin parasitic na photodiode, girman transimpedance, da samun samfurin bandwidth na amplifier mai aiki.
3. Matsakaicin kin amincewa da yanayin gama gari
Ana amfani da rabon ƙin yarda da yanayin gama gari don auna matakin danne sigina na gama gari ta hanyar madaidaitan masu ganowa, kuma samfuran kasuwanci gabaɗaya suna buƙatar ƙaramin ƙiyayya na gama gari na 25dB.
4.NEP
Ƙarfin Ƙarfin Ƙarfafa Harutu: Ƙarfin siginar shigarwa da ake buƙata a ma'aunin sigina-zuwa-amo na 1, wanda shine muhimmin ma'auni don auna aikin amo na tsarin. Babban abubuwan da ke tattare da ma'auni mai gano amo shine amo mai watsawa na gani da karar wutar lantarki.

Aikace-aikacen Ma'aunin Hoto (Optoelectronic Balance Detector)
A cikin 'yan shekarun nan, Balance Photodetector da aka yadu amfani a filayen kamar Laser iska radar, Laser vibration ma'auni, fiber na gani ji, rauni haske coherent ganewa, spectral ganewa, gas ganowa, da dai sauransu The bincike a kan babban gudun, high bandwidth, low amo, high na kowa yanayin ƙin yarda rabo, da kuma high ji na ƙwarai na ma'auni detectors ya sanya nasara hadewa da kuma shi ne daban-daban gamuwa da ikon yin amfani da high-gudun makamashi zuwa ga high-gudun amfani.