[9p-N204-1~16] 3.11 Nanoscale optical science and near-field optics

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9p-N204-4] GHz-Bandwidth Plasmonic-Organic-Hybrid Surface-Incident Optical Modulator

〇Koto Ariu¹, Go Soma¹, Hiroki Miyano¹, Seidai Karakida¹, Takuo Tanemura¹ (1.The Univ. of Tokyo)

Keywords:

optical modulator,metasurface,organic electro optic material

High-speed free-space electro-optic modulators operating under surface-normal incidence are critical for emerging applications such as highly parallel optical interconnects, large-scale neuromorphic optical computing, and light detection and ranging (LiDAR). In our previous presentation, we proposed a double-layer, surface-normal modulator incorporating a dimerized grating and an organic electro-optic material, and numerically demonstrated its potential for high-efficiency modulation. In this study, we present the fabrication and experimental validation of the proposed device. We successfully demonstrate, for the first time, a surface-normal modulator employing a subwavelength nanometallic structure that achieves both record-high modulation efficiency and high-speed operation beyond GHz frequencies.