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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 14 — Jul. 6, 2009
  • pp: 11710–11718

Grating induced transparency (GIT) and the dark mode in optical waveguides

Hsi-Chun Liu and Amnon Yariv  »View Author Affiliations

Optics Express, Vol. 17, Issue 14, pp. 11710-11718 (2009)

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We propose and describe a new class of optical modes consisting of superposition of three waveguide modes which can be supported by a few-mode waveguide spatially modulated by two co-spatial gratings. These supermodes bear a close, but not exact, formal analogy to the three-level quantum states involved in EIT and its attendant slow light propagation characteristics. Of particular interest is the supermode which we call the dark mode in which, in analogy with the dark state of EIT, one of the three uncoupled waveguide modes is not excited. This mode has unique dispersion characteristics that translate into a slow light propagation which possesses high bandwidth-delay product and can form the basis for a new generation of optical resonators and lasers.

© 2009 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(230.5750) Optical devices : Resonators
(230.7370) Optical devices : Waveguides

ToC Category:
Optical Devices

Original Manuscript: May 18, 2009
Revised Manuscript: June 21, 2009
Manuscript Accepted: June 21, 2009
Published: June 26, 2009

Hsi-Chun Liu and Amnon Yariv, "Grating induced transparency (GIT) and the dark mode in optical waveguides," Opt. Express 17, 11710-11718 (2009)

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