I-Abstract: Isakhiwo Esiyisisekelo kanye Nemigomo Yokusebenza ye-Avalanche PhotoDepector (I-PhotoDector ye-APD) Kwethulwa, inqubo yokuziphendukela kwemvelo yesakhiwo sedivaysi iyahlaziywa, isimo sokucwaninga samanje sifingqiwe, futhi ukuthuthukiswa kwe-AFD kufundwe ngokufanele.
1. Isingeniso
I-PhotoDesetor yithuluzi eliguqula amasiginali akhanyayo abe amasiginali kagesi. Phakathi kuI-semiconductor photodetector, Isithwali esikhiqizwe isithombe sijabule ngalesi sigameko esingena kwisekethe sangaphandle ngaphansi kwamandla kagesi asetshenzisiwe futhi sakha i-PhotoCopsent enomumo. Noma ekuphenduleni okukhulu, i-PIN Photodiode ingakhiqiza kuphela ama-pair e-elektroni umgodi ngababili, okuyinto divaysi ngaphandle kwenzuzo yangaphakathi. Ukuphendula okukhulu, kungasetshenziswa i-avalanche photodiode (APD). Umphumela we-Amplification we-APD ku-PhotoCurrent ususelwa emqhumeni wokushayisana kwe-Ionization. Ngaphansi kwemibandela ethile, ama-elektroni asheshayo kanye nezimbobo angathola amandla anele okuhlangana ne-lattice ukukhiqiza amabhangqa asha amasha e-elektroni. Le nqubo ukusabela kwe-chain, ukuze ama-pair of elektroni-umgodi okhiqizwe ngokufakwa kokukhanya kungakhiqiza inani elikhulu lamabili ama-elektroni futhi wakhe i-photocsent yesibili. Ngakho-ke, i-APD inokuphendula okuphezulu kanye nenzuzo yangaphakathi, ethuthukisa isilinganiso se-Signal-to-Noise sedivayisi. I-APD izosetshenziswa ikakhulukazi ezinhlelweni ezide noma ezincanyana zokuxhumana ze-Fiber Optical neminye imikhawulo kumandla we-Optical atholakele. Njengamanje, iningi lezinhlelo zokusebenza zedivayisi yedivayisi linethemba elikhulu ngamathemba e-APD, futhi likholelwa ukuthi ucwaningo lwe-APD luyadingeka ukuthuthukisa ukuncintisana kwamanye amazwe kwemikhakha ehlobene.
2. Ukuthuthukiswa kwezobuchwepheshe kweI-Avalanche PhotoDepector(I-PhotoDector ye-APD)
2.1 Izinto zokwakha
(1)Bheka I-PhotoDector
I-SI Izinto Ezisetshenziswayo Ubuchwepheshe bubuchwepheshe obuvuthiwe obusetshenziswa kabanzi emkhakheni wama-microelectronics, kepha akufanelekele ukulungiswa kwamadivayisi kububanzi be-wavelength kanye ne-1.55mm ngokuvamile eyamukelwa emkhakheni wokuxhumana okubonakalayo.
(2) ge
Yize impendulo ebukekayo ye-GE APD ilungele izidingo zokulahlekelwa okuphansi kanye nokusakazwa okuphansi kokudluliswa kwe-fiber okubonakalayo, kunobunzima obukhulu kwinqubo yokulungiselela. Ngaphezu kwalokho, isilinganiso se-elektroni ne-hole ionization ratio eseduze () 1, ngakho-ke kunzima ukulungiselela amadivayisi aphezulu we-APD.
(3) ngo-10.53GA0.47AS / INP
Kuyindlela ephumelelayo yokukhetha i-10.53GA0.47As njengesendlalelo somumo sokukhanya kwe-APD ne-INP njengesendlalelo sokuphindaphindeka. Inani eliphakeme le-Amunction le-IN0.53Ga0.47AS Material is 1.65mm, 1.31mm, 1.51mm, 1.55mm waveeffth imayelana nokuhlanganiswa okuphezulu kwe-104cm
(4)I-Ingaas PhotoDetor/ InI-PhotoDETETETETECETETET
Ngokukhetha i-Ingaap njengoba ungqimba lokukhanya okukhanyayo kanye ne-inp njenge-reltiplier ungqimba, i-APD nge-recent wavelength ka-1-1.4mm, i-avalanche ephansi yamanje, inzuzo ephansi yamanje ye-avalanche ingalungiswa. Ngokukhetha izakhi ezahlukahlukene ze-alloy, ukusebenza okuhle kakhulu kwama-wavelength athile kutholakala.
(5) Ingaas / Inalas
I-IN0.52AL0.48AS Material inegebe le-band (1.47EV) futhi alibangeli kububanzi be-wavelthy of 1.55mm. Kunobufakazi obuncanyana ku -0.52al0.48as sepitaxial ungqimba angathola izici ezingcono kakhulu kune-INP njenge-reltiplidator ungqimba ngaphansi kwesimo somjovo we-Electriplic.
(6) I-Ingaas / Ingaas (p) / Inalas kanye ne-Ingaas / in (Al) Gaas / Inalas
Izinga le-Ithonya lezinto zokwakha liyisici esibalulekile esithinta ukusebenza kwe-APD. Imiphumela ikhombisa ukuthi izinga lokushayisana lokushayisana kwesendlalelo sabaphindaphindayo lingathuthukiswa ukwethula i-Ingaas (P) / Inalas kanye (al) nezakhiwo ze-Gaas / Al). Ngokusebenzisa isakhiwo se-superlattice, ubunjiniyela be-band bungalawula ngokwezifiso i-Asymmetric Band Edge Discontinuty phakathi kwebhendi yokuhumusha kanye namanani we-valence band, futhi uqinisekise ukuthi i-conduction band discontinuity inkulu kakhulu kune-valence band discontinuity (Δ >>..v) Uma kuqhathaniswa nezinto zokwenziwa ngobuningi be-Ingaas, Izinga le-Ingaas Ngenxa ye-ΔChile >> Isilinganiso (K) samazinga we-elektroni eonishinization ukuze akhuphuke izinga le-hole ionization. Ngakho-ke, umkhiqizo we-High Fine-bandwidth (GBW) kanye nomsindo ophansi ungatholakala ngokusebenzisa izinhlaka ze-superlattice. Kodwa-ke, le i-Ingaas / Inalas Quantum kahle i-APD, engakhuphula inani le-K, kunzima ukufaka isicelo kubamukeli be-Optical. Lokhu kungenxa yokuthi i-Multiplier Factor ethinta ukuphendula okuphezulu ikhawulelwe yi-shwarmnyama yamanje, hhayi umsindo ophindaphindayo. Kulesi sakhiwo, amanje, amanje amnyama adalwa yimiphumela yomhubhe we-Indelaas Well ungqimba we-band alloy, ngakho-ke ukwethulwa kwe-Ingaas noma i-Ingaas ye-Quantum Well kungacindezela ukuthi i-Quantum Wells Cart.
Isikhathi sePosi: Nov-13-2023