The Japan Society of Applied Physics

2023 International Conference on Solid State Devices and Materials

2023 International Conference on Solid State Devices and Materials

Sep 5, 2023 - Oct 31, 2023
Nagoya Congress Center

2:00 PM - 2:15 PM

[H-7-02] Compact passive waveguides using mosaic-based device with triangular lattice photonic crystal-like structure

○Takuya Mitarai1,2, Takeshi Fujisawa3, Yusuke Sawada1,2, Takuya Okimoto1,2, Naoya Kono2, Naoki Fujiwara1,2, Taichi Muratsubaki3, Takanori Sato3, Kunimasa Saitoh3, Hideki Yagi1,2 (1. Photonics Electronics Tech. Res. Assoc. (Japan), 2. Sumitomo Electric Industries, Ltd. (Japan), 3. Hokkaido Univ. (Japan))

https://doi.org/10.7567/SSDM.2023.H-7-02

We propose the triangular lattice photonic-crystal-like mosaic-based devices for ultra-compact Si-photonic devices. As the demonstration, we design and fabricate 1×2 power splitters with arbitrary split ratio and 4-channel wavelength demultiplexers for CWDM. The power splitters show split ratio as designed with the small excess loss of 0.5 dB on the size of 2.4 × 2.4 μm2, and the wavelength demultiplexer property is also indicated using three mosaic-based splitters on the size of 7.5 × 17.2 μm2.