[20a-P02-1~22] 3.11 Nanoscale optical science and near-field optics

[20a-P02-5] Vertical Incidence Optical Modulator and Photodetector with Graphene/Si Metasurface in Near Infrared Wavelengths

〇Hiroki Maeda¹, Rongyang Xu², Takuya Iwasaki³, Yodai Sato⁴, Kenji Watanabe³, Takashi Taniguchi³, Satoshi Moriyama⁴, Junichi Fujikata¹, Junichi Takahara² (1.Tokushima Univ., 2.Osaka Univ., 3.NIMS, 4.Toden Univ.)

Keywords:

metasurface,graphene,Optical control devices

In recent years, data communication traffic has been markedly increasing with the spread of IoT, and high-capacity optical communication technology based on spatial optical multiplexing has been attracting attention. In this study, we focus on degenerate critical coupling in hollow Si metasurfaces, which achieves perfect absorption by matching material loss and radiation loss, and investigate a vertical-incidence optical modulator and receiver in the near-infrared wavelength band using graphene field effect transistors (FET) and hollow Si metasurface structures. The results of this study are as follows.