Zowunikira zithunzi za OFC2024

Lero tiyeni tiwone OFC2024ma photodetectors, zomwe zimaphatikizapo makamaka GeSi PD/APD, InP SOA-PD, ndi UTC-PD.

1. UCDAVIS imapanga resonant yofooka ya 1315.5nm yosafanana ndi Fabry-Perotchowunikira zithunzindi capacitance yaying'ono kwambiri, yomwe ikuyerekezeredwa kukhala 0.08fF. Pamene bias ili -1V (-2V), mdima wamagetsi ndi 0.72 nA (3.40 nA), ndipo mlingo woyankhira ndi 0.93a /W (0.96a /W). Mphamvu yowala yodzaza ndi 2 mW (3 mW). Ikhoza kuthandizira kuyesa kwa data ya liwiro la 38 GHz.
Chithunzi chotsatirachi chikuwonetsa kapangidwe ka AFP PD, komwe kali ndi mafunde olumikizidwa ndi Ge-on-Chowunikira zithunzindi chitsogozo cha kutsogolo cha SOI-Ge chomwe chimakwaniritsa kulumikizana kofanana ndi 90% ndi reflectivity ya <10%. Kumbuyo ndi Bragg reflector (DBR) yogawidwa yokhala ndi reflectivity ya >95%. Kudzera mu kapangidwe kabwino ka cavity (momwe zimagwirizanirana ndi round-trip phase), reflection ndi transmission ya AFP resonator zitha kuchotsedwa, zomwe zimapangitsa kuti Ge detector ilowe pafupifupi 100%. Pa bandwidth yonse ya 20nm ya wavelength yapakati, R+T <2% (-17 dB). M'lifupi mwa Ge ndi 0.6µm ndipo capacitance ikuyerekezeredwa kukhala 0.08fF.

2, Huazhong University of Science and Technology inapanga silicon germaniumchiphalaphala cha phiri la photodiode, bandwidth >67 GHz, phindu >6.6. SACMChowunikira zithunzi cha APDKapangidwe ka malo olumikizirana a pipini yopingasa kamapangidwa pa nsanja ya silicon optical. Intrinsic germanium (i-Ge) ndi silicon yamkati (i-Si) zimagwiritsidwa ntchito ngati gawo loyamwa kuwala ndi gawo lowirikiza la ma elekitironi, motsatana. Chigawo cha i-Ge chokhala ndi kutalika kwa 14µm chimatsimikizira kuyamwa kokwanira kwa kuwala pa 1550nm. Zigawo zazing'ono za i-Ge ndi i-Si zimathandiza kuwonjezera kuchuluka kwa photocurrent ndikukulitsa bandwidth pansi pa mphamvu yayikulu ya bias. Mapu a maso a APD adayesedwa pa -10.6 V. Ndi mphamvu yolowera ya optical ya -14 dBm, mapu a maso a 50 Gb/s ndi 64 Gb/s OOK akuwonetsedwa pansipa, ndipo SNR yoyesedwa ndi 17.8 ndi 13.2 dB, motsatana.

3. Zipangizo zoyendetsera ndege za IHP 8-inch BiCMOS zikuwonetsa germaniumChowunikira zithunzi cha PDndi m'lifupi mwake wa fin pafupifupi 100 nm, zomwe zimatha kupanga mphamvu yamagetsi yapamwamba kwambiri komanso nthawi yochepa kwambiri yosinthira ma photocarrier. Ge PD ili ndi bandwidth ya OE ya 265 GHz@2V@ 1.0mA DC photocurrent. Kayendedwe ka ndondomeko kakuwonetsedwa pansipa. Chinthu chachikulu ndichakuti njira yachikhalidwe yopangira ma ion osakanikirana ya SI imasiyidwa, ndipo njira yopangira kukula imatengedwa kuti ipewe kukhudzidwa ndi kuyika ma ion pa germanium. Mphamvu yamdima ndi 100nA,R = 0.45A /W.
4, HHI ikuwonetsa InP SOA-PD, yokhala ndi SSC, MQW-SOA ndi chowunikira chapamwamba kwambiri. Pa gulu la O. PD ili ndi kuyankha kwa 0.57 A/W yokhala ndi 1 dB PDL yochepera 1, pomwe SOA-PD ili ndi kuyankha kwa 24 A/W yokhala ndi 1 dB PDL yochepera 1. Bandwidth ya ziwirizi ndi ~60GHz, ndipo kusiyana kwa 1 GHz kungachitike chifukwa cha kuchuluka kwa resonance kwa SOA. Palibe zotsatira za pattern zomwe zidawoneka pachithunzi chenicheni cha diso. SOA-PD imachepetsa mphamvu yowunikira yofunikira ndi pafupifupi 13 dB pa 56 GBaud.

5. ETH imagwiritsa ntchito mtundu wachiwiri wa GaInAsSb/InP UTC-PD, yokhala ndi bandwidth ya 60GHz@zero bias komanso mphamvu yayikulu yotulutsa ya -11 DBM pa 100GHz. Kupitiliza zotsatira zam'mbuyomu, pogwiritsa ntchito mphamvu yowonjezereka ya GaInAsSb yoyendetsa ma elekitironi. Mu pepalali, zigawo zoyamwa bwino zimaphatikizapo GaInAsSb yopangidwa kwambiri ya 100 nm ndi GaInAsSb yosapangidwa ya 20 nm. Gawo la NID limathandiza kukonza kuyankha konse komanso limathandizanso kuchepetsa mphamvu yonse ya chipangizocho ndikukweza bandwidth. 64µm2 UTC-PD ili ndi bandwidth ya zero-bias ya 60 GHz, mphamvu yotulutsa ya -11 dBm pa 100 GHz, ndi mphamvu yodzaza ya 5.5 mA. Pa reverse bias ya 3 V, bandwidth imawonjezeka kufika pa 110 GHz.

6. Innolight idakhazikitsa chitsanzo cha frequency response cha germanium silicon photodetector potengera kuganizira mokwanira za doping ya chipangizo, kugawa kwa magetsi ndi nthawi yotumizira chonyamulira chopangidwa ndi zithunzi. Chifukwa cha kufunika kwa mphamvu yayikulu yolowera ndi bandwidth yayikulu m'magwiritsidwe ambiri, mphamvu yayikulu yowunikira idzachepetsa bandwidth, njira yabwino ndikuchepetsa kuchuluka kwa chonyamulira mu germanium pogwiritsa ntchito kapangidwe kake.

7, Tsinghua University idapanga mitundu itatu ya UTC-PD, (1) kapangidwe ka 100GHz bandwidth double drift layer (DDL) yokhala ndi mphamvu yayikulu yokwanira UTC-PD, (2) kapangidwe ka 100GHz bandwidth double drift layer (DCL) yokhala ndi mphamvu yayikulu UTC-PD, (3) 230 GHZ bandwidth MUTC-PD yokhala ndi mphamvu yayikulu yokwanira, Pazochitika zosiyanasiyana zogwiritsira ntchito, mphamvu yayikulu yokwanira, bandwidth yayikulu komanso kuyankha kwakukulu kungakhale kothandiza mtsogolo mukalowa mu nthawi ya 200G.