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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 12 — Jun. 9, 2008
  • pp: 9245–9253

Large delay-bandwidth product and tuning of slow light pulse in photonic crystal coupled waveguide

Toshihiko Baba, Takashi Kawasaki, Hirokazu Sasaki, Jun Adachi, and Daisuke Mori  »View Author Affiliations


Optics Express, Vol. 16, Issue 12, pp. 9245-9253 (2008)
http://dx.doi.org/10.1364/OE.16.009245


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Abstract

This paper reports two advances in a slow light device consisting of chirped photonic crystal slab coupled waveguide on SOI substrate. One is concerning the delay-bandwidth product, indicating the buffering capacity of the device. We experimentally evaluated a record high value of 57 (a 40 ps delay and a 1.4 THz bandwidth). We also observed ~1 ps wide optical pulse transmission in the cross-correlation measurement. Regarding the pulse as a signal and considering the broadening of the pulse width due to the imperfect dispersion compensation in the device, storage of more than 12 signal bits was confirmed. The other is a wide-range tuning of the pulse delay. We propose a technique for externally controlling the chirping to permit variable delay. We demonstrate tuning of the pulse delay up to 23 ps, corresponding to a ~7 mm extension of the free space length.

© 2008 Optical Society of America

OCIS Codes
(230.3120) Optical devices : Integrated optics devices
(230.3990) Optical devices : Micro-optical devices

ToC Category:
Slow Light

History
Original Manuscript: May 1, 2008
Revised Manuscript: June 5, 2008
Manuscript Accepted: June 5, 2008
Published: June 6, 2008

Citation
Toshihiko Baba, Takashi Kawaaski, Hirokazu Sasaki, Jun Adachi, and Daisuke Mori, "Large delay-bandwidth product and tuning of slow light pulse in photonic crystal coupled waveguide," Opt. Express 16, 9245-9253 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-12-9245


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