I-revolutionary silicon photodetector (Si photodetector)

Uguqukoi-silicon photodetector(Si i-photodetector)

I-Revolutionary all-silicon photodetector.I-photodetector）, ukusebenza okungaphezu kokwesiko

Ngokukhula kwenkimbinkimbi yamamodeli obuhlakani bokwenziwa kanye namanethiwekhi ajulile e-neural, amaqoqo ekhompiyutha abeka izidingo eziphakeme ekuxhumaneni kwenethiwekhi phakathi kwamaphrosesa, inkumbulo namanodi wokubala. Nokho, amanethiwekhi endabuko e-on-chip nawe-inter-chip asekelwe ekuxhumekeni kukagesi awakwazanga ukuhlangabezana nesidingo esikhulayo somkhawulokudonsa, ukubambezeleka kanye nokusetshenziswa kwamandla. Ukuze uxazulule le nkinga, ubuchwepheshe bokuxhumanisa i-optical nebanga elide lokudlulisela, isivinini esisheshayo, izinzuzo eziphezulu zokusebenzisa amandla, kancane kancane kube ithemba lentuthuko yesikhathi esizayo. Phakathi kwazo, ubuchwepheshe be-silicon photonic obusekelwe kunqubo ye-CMOS bubonisa amandla amakhulu ngenxa yokuhlanganiswa kwayo okuphezulu, izindleko eziphansi kanye nokunemba kokucubungula. Kodwa-ke, ukugcwaliseka kwama-photodetectors asebenza kahle kusabhekene nezinselelo eziningi. Ngokuvamile, ama-photodetectors adinga ukuhlanganisa izinto ezisetshenziswayo ngegebe elincane lebhendi, njenge-germanium (Ge), ukuze kuthuthukiswe ukusebenza kokutholwa, kodwa lokhu kuphinde kuholele ezinqubweni zokukhiqiza eziyinkimbinkimbi, izindleko eziphezulu, kanye nezivuno eziguquguqukayo. I-all-silicon photodetector eyakhiwe ithimba locwaningo ifinyelele isivinini sokudlulisa idatha esingu-160 Gb/s ngeshaneli ngayinye ngaphandle kokusebenzisa i-germanium, enomkhawulokudonsa ophelele wokudlulisa ongu-1.28 Tb/s, ngomklamo omusha we-double-microring resonator.

Muva nje, ithimba labacwaningi elihlangene e-United States lishicilele ucwaningo olusha, limemezela ukuthi liphumelele ukwenza i-avalanche photodiode ye-silicone (I-APD photodetector) chip. Le chip ine-ultra-high speed kanye nomsebenzi wesixhumi esibonakalayo se-photoelectric esinezindleko eziphansi, okulindeleke ukuthi ifinyelele ngaphezu kuka-3.2 Tb ngomzuzwana wokudluliswa kwedatha kumanethiwekhi okubonayo esikhathi esizayo.

Ukuphumelela kobuchwepheshe: idizayini ye-double microring resonator

Izitholi zezithombe zendabuko zivame ukuba nokungqubuzana okungalungiseki phakathi komkhawulokudonsa kanye nokusabela. Ithimba labacwaningi likudambise ngempumelelo lokhu kungqubuzana ngokusebenzisa idizayini ye-double-microring resonator futhi lacindezela ngempumelelo inkulumo-mpikiswano phakathi kwamashaneli. Imiphumela yokuhlola ibonisa ukuthi iyonke i-silicon photodetectorinempendulo engu-0.4 A/W, i-current emnyama ephansi njengo-1 nA, umkhawulokudonsa ophezulu ongu-40 GHz, kanye ne-crosstalk kagesi ephansi kakhulu engaphansi kuka-−50 dB. Lokhu kusebenza kuqhathaniswa nama-photodetectors amanje wentengiso asuselwa kuzinto ze-silicon-germanium kanye ne-III-V.

Ukubheka esikhathini esizayo: Indlela eya emisha kumanethiwekhi okukhanya

Ukuthuthukiswa okuphumelelayo kwe-all-silicon photodetector akudlulanga kuphela isisombululo sendabuko kwezobuchwepheshe, kodwa futhi kwazuza ukonga cishe kwe-40% ngezindleko, okuvula indlela yokufezeka kwamanethiwekhi optical asheshayo, angabizi kakhulu esikhathini esizayo. Ubuchwepheshe buhambisana ngokugcwele nezinqubo ezikhona ze-CMOS, buyavuna futhi bukhiqiza kakhulu, futhi kulindeleke ukuthi bube ingxenye evamile emkhakheni wobuchwepheshe be-silicon photonics esikhathini esizayo. Ngokuzayo, ithimba locwaningo lihlela ukuqhubeka nokuthuthukisa idizayini ukuze liqhubeke lithuthukise izinga lokumuncwa kanye nokusebenza komkhawulokudonsa wesitholi sesithombe ngokunciphisa ukugxila kwe-doping nokuthuthukisa izimo zokufakelwa. Ngesikhathi esifanayo, ucwaningo luzophinde luhlole ukuthi lobu buchwepheshe be-silicon yonke bungasetshenziswa kanjani kumanethiwekhi optical kumaqoqo esizukulwane esilandelayo se-AI ukuze kuzuzwe umkhawulokudonsa ophezulu, ukuqina nokusebenza kahle kwamandla.