Zowunikira zithunzi zothamanga kwambiri zimayambitsidwa ndi zowunikira zithunzi za InGaAs

Zipangizo zojambulira zithunzi zothamanga kwambiri zimayambitsidwa ndiZipangizo zowunikira zithunzi za InGaAs

Zipangizo zowunikira zithunzi zothamanga kwambiriMu gawo la kulumikizana kwa kuwala, makamaka ma photodetector a III-V InGaAs ndi IV full Si ndi Ge/Si photodetectors. Choyamba ndi chowunikira chachikhalidwe chapafupi ndi infrared, chomwe chakhala chikugwira ntchito kwa nthawi yayitali, pomwe chachiwiri chimadalira ukadaulo wa silicon optical kuti chikhale nyenyezi yomwe ikukwera, ndipo ndi malo otchuka kwambiri pantchito yofufuza za ma optoelectronics apadziko lonse lapansi m'zaka zaposachedwa. Kuphatikiza apo, zowunikira zatsopano zochokera ku perovskite, zinthu zachilengedwe ndi zinthu ziwiri zikukula mwachangu chifukwa cha ubwino wosavuta kukonza, kusinthasintha bwino komanso zinthu zosinthika. Pali kusiyana kwakukulu pakati pa zowunikira zatsopanozi ndi zowunikira zachikhalidwe zopanda chilengedwe m'zinthu zakuthupi ndi njira zopangira. Zowunikira za Perovskite zili ndi mawonekedwe abwino kwambiri oyamwa kuwala komanso mphamvu yonyamula bwino, zowunikira zinthu zachilengedwe zimagwiritsidwa ntchito kwambiri chifukwa cha ma elekitironi awo otsika mtengo komanso osinthasintha, ndipo zowunikira zinthu ziwiri zakopa chidwi chachikulu chifukwa cha mawonekedwe awo apadera komanso kuyenda kwakukulu kwa chonyamulira. Komabe, poyerekeza ndi zowunikira za InGaAs ndi Si/Ge, zowunikira zatsopanozi zikufunikabe kukonzedwa pankhani yokhazikika kwa nthawi yayitali, kukhwima kwa kupanga ndi kuphatikiza.

InGaAs ndi imodzi mwa zipangizo zabwino kwambiri zopezera ma photodetector othamanga kwambiri komanso oyankha kwambiri. Choyamba, InGaAs ndi chida cholumikizira bandgap mwachindunji, ndipo m'lifupi mwake bandgap imatha kulamulidwa ndi chiŵerengero pakati pa In ndi Ga kuti ipeze zizindikiro zowunikira za mafunde osiyanasiyana. Pakati pawo, In0.53Ga0.47As imagwirizana bwino ndi lattice ya substrate ya InP, ndipo ili ndi coefficient yayikulu yoyamwa kuwala mu band yolumikizirana ya optical, yomwe imagwiritsidwa ntchito kwambiri pokonzekerama photodetectors, ndipo mphamvu ya mdima komanso momwe zimagwirira ntchito bwino kwambiri ndizo zabwino kwambiri. Kachiwiri, zipangizo za InGaAs ndi InP zonse zili ndi liwiro lalikulu la ma elekitironi, ndipo liwiro lawo la ma elekitironi okhuta ndi pafupifupi 1 × 107 cm/s. Nthawi yomweyo, zipangizo za InGaAs ndi InP zimakhala ndi mphamvu yowonjezereka ya ma elekitironi pansi pa mphamvu inayake yamagetsi. Liwiro la overshoot likhoza kugawidwa m'magulu 4 × 107cm/s ndi 6 × 107cm/s, zomwe zimathandiza kuti pakhale bandwidth yayikulu yocheperako yonyamula. Pakadali pano, InGaAs photodetector ndiye chowunikira kwambiri cha kuwala, ndipo njira yolumikizira pamwamba imagwiritsidwa ntchito kwambiri pamsika, ndipo zinthu zowunikira pamwamba pa 25 Gbaud/s ndi 56 Gbaud/s zapangidwa. Zowunikira zazing'ono, back incidence ndi bandwidth yayikulu ya surface incidence nazonso zapangidwa, zomwe ndizofunikira kwambiri pakugwiritsa ntchito liwiro lalikulu komanso kuchuluka kwa saturation. Komabe, probe ya surface incidence imachepetsedwa ndi coupling mode yake ndipo ndizovuta kuphatikiza ndi zida zina za optoelectronic. Chifukwa chake, chifukwa cha kusintha kwa zofunikira zolumikizirana ndi optoelectronic, ma waveguide olumikizidwa ndi InGaAs photodetectors omwe ali ndi magwiridwe antchito abwino komanso oyenera kuphatikiza pang'onopang'ono akhala maziko a kafukufuku, pakati pawo ma module amalonda a 70 GHz ndi 110 GHz InGaAs photoprobe pafupifupi onse amagwiritsa ntchito mapangidwe olumikizidwa ndi waveguide. Malinga ndi zinthu zosiyanasiyana za substrate, waveguide coupling InGaAs photoelectric probe ingagawidwe m'magulu awiri: InP ndi Si. Zinthu za epitaxial pa substrate ya InP zili ndi khalidwe labwino ndipo ndizoyenera kwambiri pokonzekera zipangizo zogwira ntchito kwambiri. Komabe, kusiyana kosiyanasiyana pakati pa zinthu za III-V, zinthu za InGaAs ndi zinthu za Si zomwe zimakula kapena kulumikizidwa pa zinthu za Si kumapangitsa kuti zinthu kapena mawonekedwe ake akhale otsika, ndipo magwiridwe antchito a chipangizochi akadali ndi malo akuluakulu oti akonzedwe.