Imashini ipima foto ya silikoni (Si photodetector)

Impinduramatwaraicyuma gipima foto cya silikoni（Si fotodecteur）

Imashini ipima foto ya silicon yose (revolutionary all-silicon photodetector)（Si fotodecteur）, imikorere irenze uko bisanzwe

Bitewe n’ubuhanga bukabije bw’imashini zikora mu ikoranabuhanga n’imiyoboro y’ubwonko yimbitse, amatsinda y’abakoresha mudasobwa ashyira ingufu nyinshi mu itumanaho hagati ya poroseseri, ububiko bw’amakuru n’amanode yo kubara. Ariko, imiyoboro gakondo ishingiye kuri chip na inter-chip ishingiye ku miyoboro y’amashanyarazi ntiyashoboye guhaza icyifuzo gikomeje kwiyongera cy’uburyo bwo kohereza amakuru, gutinda no gukoresha ingufu. Kugira ngo bikemure iki kibazo, ikoranabuhanga ryo guhuza optique hamwe n’intera ndende yo kohereza amakuru, umuvuduko wayo wihuta, inyungu nyinshi zo gukoresha ingufu, bigenda biba icyizere cy’iterambere ry’ejo hazaza. Muri byo, ikoranabuhanga rya silicon fotonic rishingiye kuri CMOS rigaragaza ubushobozi bukomeye bitewe no guhuza kwayo cyane, guhenda no gutunganya neza. Ariko, gushyira mu bikorwa ibyuma bipima amashusho bifite imikorere myiza biracyahura n’imbogamizi nyinshi. Ubusanzwe, ibikoresho bipima amashusho bigomba guhuza ibikoresho bifite icyuho gito, nka germanium (Ge), kugira ngo binoze imikorere yo kumenya amakuru, ariko ibi binatera inzira zigoye zo gukora, ibiciro biri hejuru, n’umusaruro udasobanutse. Iyi foto detector ifite ubushobozi bwo gupima amakuru bwakozwe n'itsinda ry'ubushakashatsi yageze ku muvuduko wo kohereza amakuru wa 160 Gb/s kuri buri muyoboro nta gukoresha germanium, ifite ubushobozi bwo kohereza amakuru bwa 1.28 Tb/s, binyuze mu gishushanyo gishya cya resonator ifite ubushobozi bwo gupima amakuru bubiri.

Vuba aha, itsinda ry’abashakashatsi rihuriweho muri Leta Zunze Ubumwe za Amerika ryasohoye ubushakashatsi bushya, ritangaza ko ryashoboye gukora neza photodiode ya silicon avalanche (APD ipima foto) chip. Iyi chip ifite umuvuduko mwinshi cyane kandi ihendutse ku buryo bwo gukoresha ikoranabuhanga ry'amashanyarazi, byitezwe ko izagera kuri 3.2 Tb kuri buri segonda mu miyoboro y'ikoranabuhanga y'amajwi mu gihe kizaza.

Iterambere rya tekiniki: igishushanyo mbonera cya resonator ya microring ebyiri

Imashini zisanzwe zipima foto zikunze kugira ukuvuguruzanya kudasanzwe hagati y’uburyo bwo gupima uburebure n’uburyo bwo gusubiza ibintu mu buryo. Itsinda ry’ubushakashatsi ryashoboye kugabanya uku kuvuguruzanya rikoresheje igishushanyo mbonera cya resonator gifite micro-microring ebyiri kandi rikuraho neza ibiganiro hagati y’imiyoboro. Ibisubizo by’igerageza bigaragaza koicyuma gipima amashusho cya silicone yoseifite igisubizo cya A cya 0.4 A/W, umuyoboro wijimye uri hasi ya 1 nA, umuyoboro munini wa 40 GHz, n'umuyoboro muto cyane w'amashanyarazi uri munsi ya −50 dB. Iyi mikorere igereranywa n'ibikoresho bipima foto by'ubucuruzi bikoresha ibikoresho bya silicon-germanium na III-V.

Kureba ahazaza: Inzira yo guhanga udushya mu miyoboro y'urumuri

Iterambere ryiza rya foto detector ifite silicone yose ntiryarenze gusa igisubizo gisanzwe mu ikoranabuhanga, ahubwo ryanatumye haboneka ubwizigame bwa 40% mu giciro, bitegura inzira yo gushyira mu bikorwa imiyoboro y’amatara yihuta kandi ihendutse mu gihe kizaza. Iri koranabuhanga rijyanye neza n’imikorere ya CMOS isanzweho, rifite umusaruro mwinshi cyane, kandi ryitezwe ko rizaba igice gisanzwe mu rwego rw’ikoranabuhanga rya silicon photonics mu gihe kizaza. Mu gihe kizaza, itsinda ry’ubushakashatsi rirateganya gukomeza kunoza igishushanyo kugira ngo rirusheho kunoza igipimo cyo kwinjiza no gukora bandwidth ya foto detector binyuze mu kugabanya ingano ya doping no kunoza imiterere yo gutera. Muri icyo gihe, ubushakashatsi buzasesengura uburyo iri koranabuhanga rifite silicone yose rishobora gukoreshwa ku miyoboro y’amatara mu matsinda y’ubuhanga bwa AI yo mu gisekuru gitaha kugira ngo hagerwe ku bushobozi bwo hejuru bwo gukoresha bandwidth, kwaguka no gukoresha neza ingufu.