2017年第78回応用物理学会秋季学術講演会

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CS コードシェアセッション » 【CS.6】3.13 半導体光デバイス,3.15シリコンフォトニクスのコードシェアセッション

[7a-A504-1~12] 【CS.6】3.13 半導体光デバイス,3.15シリコンフォトニクスのコードシェアセッション

2017年9月7日(木) 09:00 〜 12:15 A504 (504+505)

羽鳥 伸明(PETRA)、清水 大雅(農工大)

09:15 〜 09:30

[7a-A504-2] Thermo-optic Tuning of Hybrid III-V/Si DFB laser by Direct Heating of Si waveguide for FMCW LiDAR Light Sources

〇(M1)Moataz Eissa1、Junichi Suzuki1、Nobuhiko Nishiyama1,2、Toshihiko Baba3、Shigehisa Arai1,2 (1.Tokyo Tech、2.IIR、3.Yokohama Natl. Univ.)

キーワード:Silicon Photonics, Hybrid Integration, Thermo-optic tuning

Recently, LiDAR (Light Detection and Ranging) is extending its role in various applications such as autonomous cars and drones. Current LiDAR products use mechanical scanning systems, however, non-mechanical scanning systems with very compact sizes are expected to be realized. In our project, we are developing a one-chip Si photonics FMCW (Frequency Modulated Continuous Wave) LiDAR system with slow-light grating couplers and hybrid lasers. In this system, a tunable DFB laser with <1 nm tuning range (unlike full C-band telecom lasers), ~100 kHz scanning speed, while maintaining high power (>100 mW) and narrow linewidth (~few hundred kHz), is required. In this work, thermo-optic tuning of hybrid III-V/Si DFB laser by direct heating of the Si waveguide underneath the III-V structure is proposed for the first time, via lateral current injection to the Si waveguide through a thin slab layer.