Silicon photonic-wire waveguide devices

Tao Chu, Hirohito Yamada, Shigeru Nakamura, Makoto Tojo, Yutaka Urino, Satomi Ishida, Yasuhiko Arakawa

研究成果: Conference contribution

5 被引用数 (Scopus)


Silicon photonic-wire waveguide is one of the most promising platforms in constructing compact optical devices, since the waveguide can be bent with a radius of less then several microns. Recently, we have demonstrated various optical devices based on silicon photonic-wire waveguides, which include a directional coupler, a tunable optical add-drop multiplexer, and some ultra-compact 1 × N optical switches. The optical coupling length of the directional coupler was just around 10 microns, due to its high coupling efficiency. The tunable optical add-drop multiplexer was constructed with Bragg grating waveguides. It was about 700-μm-long, and was controlled through thermo-optic effect. The maximum center-wavelength shift of the tunable optical add-drop multiplexer was 6.6 nm, which was obtained at a tuning power of 0.82 W. The 1 × N optical switches were Mach-Zehnder interferometer types and were also thermally controlled. The 1 × 2 switch was compact with a footprint of 85 × 30 μm2. Its maximum extinction ratio exceeded 30 dB. The switching power and switching time was about 90 m W and 100 μsec, respectively. The 1 × 4 optical switch was constructed based on the 1 × 2 switch. Its operation was successfully demonstrated. The 1 × 4 optical switch was believed to be the smallest switch in the world. A 1 × 8 optical switch was also demonstrated with its switching operations. Further, we are fabricating a compact packaged switch module with a size of 15 × 8 × 5 (height) mm3, which includes a 1 × 4 optical switch and the input and output fiber couplers assembly.

ホスト出版物のタイトルSilicon Photonics II
出版ステータスPublished - 2007 5 24
イベントSilicon Photonics II - San Jose, CA, United States
継続期間: 2007 1 222007 1 24


名前Proceedings of SPIE - The International Society for Optical Engineering


OtherSilicon Photonics II
国/地域United States
CitySan Jose, CA

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学


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