Kiʻi kiʻi kiʻi kiʻi kiʻi (Si photodetector)

Kipiʻike kiʻi kiʻi kiʻi（Si photodetector）

ʻO ka mea nānā kiʻi kiʻi kiʻi a pau-silikona (ʻO ka mea nānā kiʻi）, ka hana ma mua o ka hana kuʻuna

Me ka piʻi nui o ka paʻakikī o nā kumu hoʻohālike artificial a me nā ʻupena neural hohonu, ʻoi aku ka nui o nā koi ʻana o nā puʻupuʻu computing i ke kamaʻilio pūnaewele ma waena o nā kaʻina hana, ka hoʻomanaʻo a me ka helu helu. Eia nō naʻe, ʻaʻole i hiki i nā ʻoihana kuʻuna on-chip a me nā inter-chip e pili ana i nā pili uila ke hoʻokō i ka ulu nui o ka noi no ka bandwidth, latency a me ka hoʻohana mana. I mea e hoʻoponopono ai i kēia bottleneck, ʻenehana pili optical me kona lōʻihi o ka hoʻouna ʻana i ka mamao, ka wikiwiki wikiwiki, nā pōmaikaʻi o ka ikehu kiʻekiʻe, e lilo mālie i ka manaʻolana o ka hoʻomohala e hiki mai ana. Ma waena o lākou, ʻo ka ʻenehana photonic silicon e pili ana i ke kaʻina CMOS e hōʻike ana i ka mana nui ma muli o kona hoʻohui kiʻekiʻe, haʻahaʻa haʻahaʻa a me ka hoʻoponopono pololei. Eia naʻe, ke kū nei ka hoʻokō ʻana o nā photodetectors kiʻekiʻe i nā pilikia he nui. ʻO ka mea maʻamau, pono nā photodetectors e hoʻohui i nā mea me kahi ʻāpana liʻiliʻi, e like me germanium (Ge), e hoʻomaikaʻi i ka hana ʻike, akā alakaʻi pū kēia i nā kaʻina hana paʻakikī, nā kumukūʻai kiʻekiʻe, a me nā hua kūpono ʻole. Ua loaʻa i ka mea kiʻi kiʻi kiʻi silicon āpau i hoʻomohala ʻia e ka hui noiʻi i ka wikiwiki o ka lawe ʻana i ka ʻikepili o 160 Gb/s i kēlā me kēia kanal me ka hoʻohana ʻole ʻana i ka germanium, me ka bandwidth hoʻoili holoʻokoʻa o 1.28 Tb/s, ma o kahi hoʻolālā resonator pālua-microring hou.

I kēia mau lā, ua paʻi ka hui noiʻi hui ma ʻAmelika i kahi noiʻi hou, e hoʻolaha ana ua hoʻomohala maikaʻi lākou i kahi photodiode avalanche all-silicon (ʻIke kiʻi APD) puʻupuʻu. Loaʻa kēia chip i ka wikiwiki kiʻekiʻe a me ka haʻahaʻa haʻahaʻa photoelectric interface hana, i manaʻo ʻia e hoʻokō ʻoi aku ma mua o 3.2 Tb i kēlā me kēia kekona ka hoʻoili ʻikepili i nā pūnaewele optical e hiki mai ana.

ʻO ka holomua ʻenehana: ʻelua microring resonator hoʻolālā

Loaʻa pinepine nā mea ʻike kiʻi kuʻuna i nā kūʻē ʻole ma waena o ka bandwidth a me ka pane. Ua hoʻopau maikaʻi ka hui noiʻi i kēia kūʻē ʻana ma o ka hoʻohana ʻana i kahi hoʻolālā resonator pālua-microring a hoʻopaʻa pono i ke kamaʻilio keʻa ma waena o nā kahawai. Hōʻike nā hopena hoʻokolohua i kamea nānā kiʻi kiʻi-silikona āpauHe pane o 0.4 A/W, he au pouli e like me 1 nA, he bandwidth kiʻekiʻe o 40 GHz, a he haʻahaʻa haʻahaʻa uila crosstalk ma lalo o −50 dB. Hoʻohālikelike ʻia kēia hana me nā kiʻi kiʻi kiʻi kālepa o kēia manawa e pili ana i nā mea silicon-germanium a me III-V.

Ke nānā nei i ka wā e hiki mai ana: ʻO ke ala i ka hana hou i nā pūnaewele optical

ʻAʻole i ʻoi aku ka maikaʻi o ka hoʻomohala ʻana i ka photodetector all-silicon i ka hopena kuʻuna i ka ʻenehana, akā ua loaʻa pū kekahi i kahi mālama kālā ma kahi o 40% i ke kumukūʻai, e hoʻopaʻa ana i ke ala no ka hoʻokō ʻana i nā pūnaewele optical kiʻekiʻe, haʻahaʻa haʻahaʻa i ka wā e hiki mai ana. Hoʻopili piha ka ʻenehana me nā kaʻina CMOS i loaʻa, he kiʻekiʻe kiʻekiʻe a me nā hua, a ua manaʻo ʻia e lilo i mea maʻamau i ke kahua o ka ʻenehana photonics silicon i ka wā e hiki mai ana. I ka wā e hiki mai ana, hoʻolālā ka hui noiʻi e hoʻomau i ka hoʻolālā ʻana e hoʻomaikaʻi hou i ka helu absorption a me ka hana bandwidth o ka photodetector ma o ka hoʻemi ʻana i nā manaʻo doping a me ka hoʻomaikaʻi ʻana i nā kūlana implantation. Ma ka manawa like, e ʻimi pū ka noiʻi pehea e hiki ai ke hoʻohana ʻia kēia ʻenehana silicon āpau i nā ʻenehana optical i nā pūʻulu AI e hiki mai ana e hoʻokō i ka bandwidth kiʻekiʻe, scalability a me ka ikaika o ka ikehu.