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Proceedings Article

SOI-based photonic crystal line-defect waveguides

[+] Author Affiliations
Koji Yamada, Tai Tsuchizawa, Toshifumi Watanabe, Jun-Ichi Takahashi, Emi Tamechika, Hirofumi Morita

NTT Telecommunications Energy Labs. (Japan)

Masaya Notomi, Akihiko Shinya, Itaru Yokohama

NTT Basic Research Labs. (Japan)

Tetsufumi Shoji

NTT Telecommunications Energy Labs (Japan)

Proc. SPIE 4870, Active and Passive Optical Components for WDM Communications II, 324 (July 10, 2002); doi:10.1117/12.475545
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From Conference Volume 4870

  • Active and Passive Optical Components for WDM Communications II
  • Achyut K. Dutta; Abdul Ahad S. Awwal; Niloy K. Dutta; Katsunari Okamoto
  • Boston, MA | July 29, 2002


We have experimentally demonstrated single-mode light-wave transmission and tunable waveguiding characteristics in photonic crystal (PC) waveguides constructed on a silicon-on-insulator (SOI) substrate as is most likely to be used for the a large scale integration of photonic circuits. Although off-plane diffractive leakage has been a serious problem in SOI-PC waveguides, we have overcome this problem in our narrow line-defect and phase-shifted-hole line-defect waveguide structures. These devices were developed through intensive theoretical studies on PC line-defect waveguieds. We have also demonstrated low-loss mode profile converter that will enable efficient connection between conventional silica-based waveguides and PC line-defect waveguides. The converter features an inversely-tapered silicon wire waveguide with an ultra-thin tip constructed on an SOI substrate. In our experiments, this converter proved capable of coupling loss as low as 0.5dB per conversion. These SOI-based devices represent an important step towards practical large-scale integrated photonic crystal circuits.

© (2002) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Koji Yamada ; Masaya Notomi ; Akihiko Shinya ; Itaru Yokohama ; Tetsufumi Shoji, et al.
"SOI-based photonic crystal line-defect waveguides", Proc. SPIE 4870, Active and Passive Optical Components for WDM Communications II, 324 (July 10, 2002); doi:10.1117/12.475545; http://dx.doi.org/10.1117/12.475545

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