Uguqulo lwesilicon photodetector (Si photodetector)

Uguquloi-silicon photodetector(Si photodetector)

Uguqulo lwe-silicon photodetector yonke.Siyi-photodetector）, ukusebenza ngaphaya kwesiqhelo

Ngokuntsonkotha okwandayo kweemodeli zobukrelekrele bokwenziwa kunye nothungelwano olunzulu lwe-neural, amaqela eekhompuyutha abeka iimfuno eziphezulu kunxibelelwano lwenethiwekhi phakathi kweeprosesa, inkumbulo kunye neenodi zekhompyutha. Nangona kunjalo, uthungelwano lwemveli lwe-chip kunye ne-inter-chip esekwe kuqhagamshelo lombane alukwazanga ukuhlangabezana nemfuno ekhulayo ye-bandwidth, latency kunye nokusetyenziswa kwamandla. Ukuze kulungiswe le bhotile, itekhnoloji ye-optical interconnection kunye nomgama wayo omude wokuhambisa, isantya esikhawulezayo, inzuzo ephezulu yokusebenza kwamandla, ngokuthe ngcembe ibe yithemba lophuhliso lwexesha elizayo. Phakathi kwabo, itekhnoloji ye-silicon photonic esekwe kwinkqubo ye-CMOS ibonisa amandla amakhulu ngenxa yokudityaniswa kwayo okuphezulu, ixabiso eliphantsi kunye nokuchaneka kokusebenza. Nangona kunjalo, ukuqondwa kwee-photodetectors eziphezulu zokusebenza kusajongene nemingeni emininzi. Ngokuqhelekileyo, i-photodetectors kufuneka idibanise izinto kunye ne-gap yebhendi encinci, njenge-germanium (Ge), ukuphucula ukusebenza kokufumanisa, kodwa oku kukhokelela kwiinkqubo zokuvelisa eziyinkimbinkimbi, iindleko eziphezulu, kunye nezivuno eziphosakeleyo. I-all-silicon photodetector ephuhliswe liqela lophando iphumelele isantya sokuhanjiswa kwedatha ye-160 Gb / s ngeshaneli nganye ngaphandle kokusetyenziswa kwe-germanium, kunye ne-bandwidth iyonke yokuhanjiswa kwe-1.28 Tb / s, ngokusebenzisa i-innovative dual-microring resonator design.

Kutshanje, iqela lophando elidibeneyo e-United States lipapashe uphononongo olutsha, libhengeza ukuba baye baphuhlisa ngempumelelo i-avalanche photodiode ye-silicon yonke.Isixhobo sokufota seAPD) itshiphu. Le chip ine-ultra-high speed kunye nexabiso eliphantsi le-photoelectric interface function, ekulindeleke ukuba ifezekise ngaphezu kwe-3.2 Tb ngesibini ukudluliselwa kwedatha kwiinethiwekhi ze-optical ezizayo.

Ukuphumelela kobugcisa: uyilo lwe-resonator ye-microring ephindwe kabini

Iifoto zomthonyama zemveli zihlala zinempikiswano engangqinelaniyo phakathi kwe-bandwidth kunye nokuphendula. Iqela lophando linciphise ngempumelelo le mpikiswano ngokusebenzisa uyilo lwe-double-microring resonator kunye nokucinezela ngokufanelekileyo ukuthetha-thethana phakathi kwamajelo. Iziphumo zovavanyo zibonisa ukubayonke-silicon photodetectorinempendulo ye-0.4 A / W, i-dark current ephantsi njenge-1 nA, i-bandwidth ephezulu ye-40 GHz, kunye ne-crosstalk yombane ephantsi kakhulu engaphantsi kwe--50 dB. Le ntsebenzo ifaniswa ne-photodetectors yangoku yorhwebo ngokusekelwe kwi-silicon-germanium kunye ne-III-V izinto.

Ukujonga kwikamva: Indlela eya kwizinto ezintsha kuthungelwano lwamehlo

Uphuhliso oluyimpumelelo lwe-silicon photodetector aludlulanga kuphela isisombululo sendabuko kwithekhnoloji, kodwa lufumene ukonga malunga ne-40% kwiindleko, ukuvula indlela yokuzaliseka kwe-high-speed, i-low-cost optical networks kwixesha elizayo. Itekhnoloji ihambelana ngokupheleleyo neenkqubo ezikhoyo ze-CMOS, inesivuno esiphezulu kakhulu kunye nesivuno, kwaye kulindeleke ukuba ibe licandelo eliqhelekileyo kwicandelo letekhnoloji ye-silicon photonics kwixesha elizayo. Kwixesha elizayo, iqela lophando liceba ukuqhubeka nokwandisa uyilo lokuphucula ngakumbi izinga lokufunxa kunye nokusebenza kwe-bandwidth ye-photodetector ngokunciphisa ugxininiso lwe-doping kunye nokuphucula iimeko zokufakelwa. Kwangaxeshanye, uphando luya kuphonononga ukuba le teknoloji ye-silicon yonke ingasetyenziswa njani kuthungelwano lwe-optical kwisizukulwana esilandelayo seqela le-AI ukufezekisa i-bandwidth ephezulu, ukulinganisa kunye nokusebenza kakuhle kwamandla.