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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 26 — Dec. 27, 2004
  • pp: 6606–6614

Ultra-fast photonic crystal/quantum dot all-optical switch for future photonic networks

Hitoshi Nakamura, Yoshimasa Sugimoto, Kyozo Kanamoto, Naoki Ikeda, Yu Tanaka, Yusui Nakamura, Shunsuke Ohkouchi, Yoshinori Watanabe, Kuon Inoue, Hiroshi Ishikawa, and Kiyoshi Asakawa  »View Author Affiliations

Optics Express, Vol. 12, Issue 26, pp. 6606-6614 (2004)

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We demonstrated a novel two-dimensional photonic crystal (PC) based Symmetric Mach Zehnder type all-optical switch (PC-SMZ) with InAs quantum dots (QDs) acting as a nonlinear phase-shift source. The 600-µm-long PC-SMZ having integrated wavelength-selective PC-based directional couplers and other PC components exhibited a 15-ps-wide switching-window with 2-ps rise/fall time at a wavelength of 1.3 µm. Nonlinear optical phase shift in the 500-µm-long straight PC waveguide was also achieved at sufficiently low optical-energy (e.g., π phase shift at ~100-fJ control-pulse energy) due to the small saturation energy density of the QDs, which is enhanced in the PC waveguide, without using conventional measures such as SOAs with current-injected gain. The results pave the way to novel PC- and QD-based photonic integrated circuits including multiple PC-SMZs and other novel functional devices.

© 2004 Optical Society of America

OCIS Codes
(160.6000) Materials : Semiconductor materials
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
(230.1150) Optical devices : All-optical devices
(320.7080) Ultrafast optics : Ultrafast devices

ToC Category:
Research Papers

Original Manuscript: November 12, 2004
Revised Manuscript: December 15, 2004
Published: December 27, 2004

Nakamura Hitoshi, Yoshimasa Sugimoto, Kyozo Kanamoto, Naoki Ikeda, Yu Tanaka, Yusui Nakamura, Shunsuke Ohkouchi, Yoshinori Watanabe, Kuon Inoue, Hiroshi Ishikawa, and Kiyoshi Asakawa, "Ultra-fast photonic crystal/quantum dot alloptical switch for future photonic networks," Opt. Express 12, 6606-6614 (2004)

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