Chowunikira zithunzi cha silicon chosinthika (Si photodetector)

Kusintha kwa zinthuchowunikira zithunzi cha silicon（Si photodetector）

Chowunikira zithunzi cha silicon yonse (chosinthika)Chowunikira zithunzi(), magwiridwe antchito opitilira zomwe zinali zachikhalidwe

Chifukwa cha kusinthasintha kwa mitundu ya nzeru zopanga zinthu komanso maukonde a ubongo ozama, magulu a makompyuta akuika zofuna zambiri pa kulumikizana kwa netiweki pakati pa ma processor, memory ndi ma compute node. Komabe, maukonde achikhalidwe a on-chip ndi inter-chip ozikidwa pa kulumikizana kwamagetsi alephera kukwaniritsa kufunikira kwakukulu kwa bandwidth, latency ndi kugwiritsa ntchito mphamvu. Pofuna kuthetsa vutoli, ukadaulo wolumikizirana ndi kuwala wokhala ndi mtunda wautali wotumizira, liwiro lake lachangu, komanso ubwino wogwiritsa ntchito mphamvu zambiri, pang'onopang'ono umakhala chiyembekezo cha chitukuko chamtsogolo. Pakati pawo, ukadaulo wa silicon photonic wozikidwa pa njira ya CMOS ukuwonetsa kuthekera kwakukulu chifukwa cha kuphatikiza kwake kwakukulu, mtengo wotsika komanso kulondola kwa kukonza. Komabe, kuzindikira kwa ma photodetector ogwira ntchito kwambiri kumakumanabe ndi zovuta zambiri. Nthawi zambiri, ma photodetector amafunika kuphatikiza zinthu ndi mpata wopapatiza wa band, monga germanium (Ge), kuti apititse patsogolo magwiridwe antchito ozindikira, koma izi zimapangitsanso njira zovuta zopangira, ndalama zambiri, komanso zokolola zosakhazikika. Chowunikira zithunzi cha silicon chokha chomwe chinapangidwa ndi gulu lofufuza chinapeza liwiro lotumizira deta la 160 Gb/s pa njira iliyonse popanda kugwiritsa ntchito germanium, ndi bandwidth yonse yotumizira ya 1.28 Tb/s, kudzera mu kapangidwe katsopano ka resonator ka dual-microring.

Posachedwapa, gulu lofufuza limodzi ku United States lafalitsa kafukufuku watsopano, wolengeza kuti apanga bwino chithunzi cha photodiode chokhala ndi silicon yonse (Chowunikira zithunzi cha APDChip. Chip iyi ili ndi liwiro lapamwamba kwambiri komanso ntchito yotsika mtengo yolumikizirana ndi ma photoelectric, yomwe ikuyembekezeka kukwaniritsa kusamutsa deta yoposa 3.2 Tb pa sekondi iliyonse m'ma network amtsogolo a optical.

Kupambana kwaukadaulo: kapangidwe ka resonator ya microring iwiri

Ma photodetector akale nthawi zambiri amakhala ndi zotsutsana zosatha pakati pa bandwidth ndi reaction. Gulu lofufuza linathetsa bwino kutsutsana kumeneku pogwiritsa ntchito kapangidwe ka resonator ka ma microring awiri ndipo linaletsa bwino kulankhulana pakati pa njira. Zotsatira zoyesera zikusonyeza kutichowunikira zithunzi cha silicon yonseIli ndi yankho la A la 0.4 A/W, mphamvu yakuda yotsika ngati 1 nA, bandwidth yayikulu ya 40 GHz, komanso crosstalk yamagetsi yotsika kwambiri yochepera −50 dB. Kagwiridwe kameneka kakufanana ndi ma photodetector amakono amalonda otengera zinthu za silicon-germanium ndi III-V.

Kuyang'ana zamtsogolo: Njira yopangira zatsopano mu maukonde owonera

Kupanga bwino kwa chowunikira zithunzi cha silicon chokha sikunangoposa njira yachikhalidwe muukadaulo, komanso kunapulumutsa ndalama zokwana pafupifupi 40%, zomwe zinapangitsa kuti ma network a kuwala azigwiritsidwa ntchito mwachangu komanso motsika mtengo mtsogolo. Ukadaulowu umagwirizana kwathunthu ndi njira zomwe zilipo za CMOS, uli ndi zokolola zambiri komanso zokolola zambiri, ndipo ukuyembekezeka kukhala gawo lokhazikika m'munda waukadaulo wa silicon photonics mtsogolo. M'tsogolomu, gulu lofufuza likukonzekera kupitiliza kukonza kapangidwe kake kuti lipititse patsogolo kuchuluka kwa kuyamwa ndi magwiridwe antchito a chowunikira zithunzi pochepetsa kuchuluka kwa doping ndikukonza momwe zinthu zimayikidwira. Nthawi yomweyo, kafukufukuyu adzafufuzanso momwe ukadaulo wa silicon uwu ungagwiritsidwire ntchito pa ma network a kuwala m'magulu a AI a m'badwo wotsatira kuti akwaniritse bandwidth yayikulu, kukula kwake komanso kugwiritsa ntchito mphamvu moyenera.