Kusintha kwa silicon photodetector (Si photodetector)

Kusinthasilicon photodetector(Ndi photodetector)

Revolution all-silicon photodetector (Ndi Photodetector）, magwiridwe antchito kupitilira chikhalidwe

Ndi kuchulukirachulukira kwa mitundu yanzeru zopangapanga komanso ma neural network akuya, magulu apakompyuta amaika zofunikira kwambiri pakulumikizana kwa netiweki pakati pa ma processor, kukumbukira ndi ma compute node. Komabe, maukonde achikhalidwe pa-chip ndi ma inter-chip otengera kulumikizidwa kwamagetsi sanathe kukwaniritsa kufunikira kwa bandwidth, latency ndi kugwiritsa ntchito mphamvu. Kuti athetse vutoli, teknoloji ya optical interconnection ndi mtunda wautali wotumizira, kuthamanga kwachangu, ubwino wa mphamvu zowonjezera mphamvu, pang'onopang'ono kukhala chiyembekezo cha chitukuko chamtsogolo. Pakati pawo, teknoloji ya silicon photonic yozikidwa pa ndondomeko ya CMOS imasonyeza kuthekera kwakukulu chifukwa cha kuphatikizika kwake kwakukulu, kutsika mtengo komanso kulondola kwa kukonza. Komabe, kukwaniritsidwa kwa ma photodetectors apamwamba kwambiri kumakumanabe ndi zovuta zambiri. Nthawi zambiri, ma photodetectors amafunika kuphatikizira zida zokhala ndi bandi yopapatiza, monga germanium (Ge), kuti azitha kuzindikira bwino, koma izi zimabweretsanso njira zopangira zovuta, zokwera mtengo, komanso zokolola zosasinthika. Chojambula chojambula cha silicon chomwe chinapangidwa ndi gulu lofufuza chinapeza liwiro la kutumiza deta la 160 Gb / s pa tchanelo popanda kugwiritsa ntchito germanium, yokhala ndi bandwidth yonse yotumizira 1.28 Tb / s, kudzera mu kapangidwe katsopano kawiri-microring resonator.

Posachedwapa, gulu lina lochita kafukufuku ku United States lasindikiza kafukufuku watsopano, kulengeza kuti apanga bwino a all-silicon avalanche photodiode (APD Photodetector) chip. Chip ichi chili ndi liwiro lapamwamba kwambiri komanso ntchito yotsika mtengo ya chithunzi chamagetsi, yomwe ikuyembekezeka kukwaniritsa zoposa 3.2 Tb pamphindikati kutengerapo kwa data pama network owoneka bwino amtsogolo.

Kupambana kwaukadaulo: kapangidwe kawiri ka microring resonator

Ma photodetectors achikhalidwe nthawi zambiri amakhala ndi zosemphana zosagwirizana pakati pa bandwidth ndi kuyankha. Gulu lofufuzalo lidathetsa kusagwirizanaku pogwiritsa ntchito kamangidwe kake kachipangizo kakang'ono ka ma microring ndi kupondereza kuyankhulana pakati pa njira. Zotsatira zoyeserera zikuwonetsa kutizonse silicon photodetectorali ndi yankho la 0.4 A/W, mafunde amdima otsika ngati 1 nA, bandwidth yayikulu ya 40 GHz, komanso kuphatikizika kwamagetsi kotsika kwambiri kochepera −50 dB. Izi zikufanana ndi zowonera zamakono zamalonda zochokera ku silicon-germanium ndi III-V zida.

Kuyang'ana zam'tsogolo: Njira yopita kuzinthu zatsopano zama network optical

Kupititsa patsogolo bwino kwa silicon photodetector sikunangodutsa njira zamakono zamakono, komanso kunapeza ndalama zokwana 40% pamtengo, ndikutsegula njira yokwaniritsira makina opangira magetsi othamanga kwambiri, otsika mtengo m'tsogolomu. Ukadaulowu umagwirizana kwathunthu ndi njira zomwe zilipo kale za CMOS, uli ndi zokolola zambiri komanso zokolola zambiri, ndipo zikuyembekezeka kukhala gawo lokhazikika paukadaulo wa silicon photonics mtsogolo. M'tsogolomu, gulu lofufuza likukonzekera kupitiliza kukonza mapangidwewo kuti apititse patsogolo kuchuluka kwa mayamwidwe ndi bandwidth ya photodetector pochepetsa kuchuluka kwa doping ndikuwongolera mikhalidwe yoyikira. Panthawi imodzimodziyo, kafukufukuyu adzafufuzanso momwe teknoloji yonse ya silicon ingagwiritsire ntchito pa ma network optical m'magulu a AI a m'badwo wotsatira kuti akwaniritse bandwidth yapamwamba, scalability ndi mphamvu zamagetsi.