Plasmonically Enhanced Graphene Photodetector Featuring 100 Gbit/s Data Reception, High Responsivity, and Compact Size

Plasmonically Enhanced Graphene Photodetector Featuring 100 Gbit/s Data Reception, High Responsivity, and Compact Size

Graphene has shown great potential for high-speed photodetection. Yet, the responsivities of graphene-based high-speed photodetectors are commonly limited by the weak effective absorption of atomically thin graphene. Here, we propose and experimentally demonstrate a plasmonically enhanced waveguide-...

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Veröffentlicht in:ACS photonics 2019-01, Vol.6 (1), p.154-161
Hauptverfasser: Ma, Ping, Salamin, Yannick, Baeuerle, Benedikt, Josten, Arne, Heni, Wolfgang, Emboras, Alexandros, Leuthold, Juerg
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container_end_page 161
container_issue 1
container_start_page 154
container_title ACS photonics
container_volume 6
creator Ma, Ping
Salamin, Yannick
Baeuerle, Benedikt
Josten, Arne
Heni, Wolfgang
Emboras, Alexandros
Leuthold, Juerg
description Graphene has shown great potential for high-speed photodetection. Yet, the responsivities of graphene-based high-speed photodetectors are commonly limited by the weak effective absorption of atomically thin graphene. Here, we propose and experimentally demonstrate a plasmonically enhanced waveguide-integrated graphene photodetector. The device, which combines a 6 μm long layer of graphene with field-enhancing nanosized metallic structures, demonstrates a high external responsivity of 0.5 A/W and a fast photoresponse up to at least 110 GHz. The high efficiency and fast response of the device enables for the first time 100 Gbit/s on–off keying and 100 Gbit/s PAM-4 intensity modulated data reception with a graphene-based device. The results show the potential of graphene as a new technology for highest speed communication applications.
doi_str_mv 10.1021/acsphotonics.8b01234
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