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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 10 — May. 10, 2010
  • pp: 10567–10580

Wideband slow light in chirped slot photonic-crystal coupled waveguides

Jin Hou, Huaming Wu, D. S. Citrin, Wenqin Mo, Dingshan Gao, and Zhiping Zhou  »View Author Affiliations

Optics Express, Vol. 18, Issue 10, pp. 10567-10580 (2010)

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Wideband dispersion-free slow light in chirped-slot photonic-crystal coupled waveguides is proposed and theoretically investigated in detail. By systematically analyzing the dependence of band shape on various structure parameters, unique inflection points in the key photonic band with approximate zero group velocity can be obtained in an optimized slot photonic-crystal coupled waveguide. By simply chirping the widths of the photonic-crystal waveguides in the optimized structure, wideband (up to 20 nm) slow-light with optical confinement in the low dielectric slot is demonstrated numerically with relative temporal pulse-width spreading well below 8% as obtained from two-dimensional finite-difference time-domain simulations. The wideband slow-light operation of the proposed structures would offer significant potential for novel compact high-speed optical-signal-processing devices in silicon-based systems.

© 2010 OSA

OCIS Codes
(230.7390) Optical devices : Waveguides, planar
(260.2030) Physical optics : Dispersion
(230.5298) Optical devices : Photonic crystals

ToC Category:
Slow and Fast Light

Original Manuscript: January 14, 2010
Revised Manuscript: March 3, 2010
Manuscript Accepted: April 19, 2010
Published: May 6, 2010

Jin Hou, Huaming Wu, D. S. Citrin, Wenqin Mo, Dingshan Gao, and Zhiping Zhou, "Wideband slow light in chirped slot photonic-crystal coupled waveguides," Opt. Express 18, 10567-10580 (2010)

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