2022 International Conference on Solid State Devices and Materials
Sep 26 - Dec 23, 2022Makuhari Messe
2022 International Conference on Solid State Devices and Materials
Sep 26 - Dec 23, 2022Makuhari Messe
[A-10-01]Demonstration of an Efficient Light Coupler to a Valley Photonic Crystal Waveguide Formed at a Bearded Interface
〇Hironobu Yoshimi1,2, Takuto Yamaguchi1,2, Satomi Ishida1,2, Yasutomo Ota3,4, Satoshi Iwamoto1,2,4(1. RCAST, The Univ. of Tokyo (Japan), 2. IIS, The Univ. of Tokyo (Japan), 3. Keio Univ. (Japan), 4. NanoQuine, The Univ. of Tokyo (Japan))
Presentation style: On-site (in-person)
We demonstrate an efficient light coupler between a valley photonic crystal waveguide formed at a bearded interface and a wire waveguide. Numerically calculated coupling loss is less than 1 dB/coupler. We fabricated the couplers in a Si slab and experimentally observed a low coupling loss of 1.1 dB/coupler. These results will lay ground work for low-loss photonic circuits with topological waveguides.