I-photodetector sisixhobo esiguqula imiqondiso yokukhanya ibe yimiqondiso yombane. Kwi-photodetector ye-semiconductor, i-carrier ye-photo-generated carrier yi-photon yesiganeko ingena kwisiphaluka sangaphandle phantsi kwe-voltage ye-bias esetyenzisiweyo kwaye yenza i-photocurrent enokulinganiswa. Nangona ekuphenduleni okuphezulu, i-pin photodiode inokuvelisa kuphela iperi ye-electron-hole pairs kakhulu, esisixhobo esingenayo inzuzo yangaphakathi. Ukuphendula okukhulu, i-avalanche photodiode (apd) ingasetyenziswa.
Isiphumo sokukhulisa i-apd kwi-photocurrent sisekwe kwisiphumo sokungqubana kwe-ionization. Phantsi kweemeko ezithile, ii-elektroni ezikhawulezayo kunye nemingxuma zinokufumana amandla aneleyo okungqubana neletisi ukuvelisa iperi entsha yeeperile ze-electron-hole. Le nkqubo i-reaction reaction, ukwenzela ukuba izibini ze-electron-hole pairs eziveliswa ngokufunxa ukukhanya kunokuvelisa inani elikhulu le-electron-hole pairs kwaye zenze i-photocurrent enkulu yesibini. Ngoko ke, i-apd inokuphendula okuphezulu kunye nokuzuza kwangaphakathi, okuphucula umlinganiselo wesignali-kwingxolo yesixhobo. I-apd iya kusetyenziswa ikakhulu kumgama omde okanye kwiinkqubo ezincinci zonxibelelwano lwefiber optical kunye nezinye izithintelo kumandla optical afunyenweyo. Okwangoku, iingcali ezininzi zesixhobo se-optical zinethemba elikhulu malunga namathuba e-apd.
I-Rofea iphuhlise ngokuzimeleyo i-photodetector edibeneyo ye-photodiode kunye nesekethe yesandisi sesandi esiphantsi, ngelixa ibonelela ngeemveliso ezahlukeneyo, kubasebenzisi bophando lwezenzululwazi Ukubonelela ngenkonzo yokulungelelanisa imveliso, inkxaso yobugcisa kunye nenkonzo efanelekileyo emva kokuthengisa. Umgca wemveliso yangoku uquka: i-analog signal photodetector kunye nokukhulisa, ukufumana i-photodetector adjustable, i-photodetector yesantya esiphezulu, i-snow market detector (APD), i-balance detector, njl.
Uphawu
Uluhlu lweSpectral: 320-1000nm, 850-1650nm, 950-1650nm, 1100-1650nm, 1480-1620nm
3dBbandwidth: 200MHz-50GHz
I-Optical fiber coupling output2.5Gbps
Uhlobo lwemodyuli
3dBbandwidt:
200MHz, 1GHz, 10GHz, 20GHz, 50GHz
Isicelo
Isantya esiphezulu sokubonwa kwe-Optical pulse
Unxibelelwano lwe-optical olukhawulezayo
Ikhonkco yeMicrowave
Inkqubo ye-Brillouin optical fiber sensing
Ixesha lokuposa: Jun-21-2023