[CTuP8B] 2D Materials in Nanophotonics and Non-Hermitian Nanophotonics

[CTuP8B-02] Efficient graphene-based photodetector with an asymmetric hybrid plasmonic waveguide

*Masaaki Ono^1,2, Katsumasa Yoshioka², Kengo Nozaki^1,2, Akihiko Shinya^1,2, Masaya Notomi^1,2,3 (1. NTT Nanophotonics Center (Japan), 2. NTT Basic Research Labs. (Japan), 3. Tokyo Institute of Technology (Japan))

[Presentation Style] Onsite

We designed a compact photodetector with a graphene-loaded hybrid plasmonic waveguide that enhances light absorption to 32.1% for a 5-μm length. The asymmetric structure generates photovoltage by the photothermoelectric effect without dark current.