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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 22 — Nov. 15, 2008
  • pp: 2644–2646

Efficient slow-light coupling in a photonic crystal waveguide without transition region

T. P. White, L. C. Botten, C. Martijn de Sterke, K. B. Dossou, and R. C. McPhedran  »View Author Affiliations


Optics Letters, Vol. 33, Issue 22, pp. 2644-2646 (2008)
http://dx.doi.org/10.1364/OL.33.002644


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Abstract

We consider the coupling into a slow mode that appears near an inflection point in the band structure of a photonic crystal waveguide. Remarkably, the coupling into this slow mode, which has a group index n g > 1000 , can be essentially perfect without any transition region. We show that this efficient coupling occurs thanks to an evanescent mode in the slow medium, which has appreciable amplitude and helps satisfy the boundary conditions but does not transport any energy.

© 2008 Optical Society of America

OCIS Codes
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(130.5296) Integrated optics : Photonic crystal waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: July 16, 2008
Revised Manuscript: September 24, 2008
Manuscript Accepted: September 25, 2008
Published: November 12, 2008

Citation
T. P. White, L. C. Botten, C. Martijn de Sterke, K. B. Dossou, and R. C. McPhedran, "Efficient slow-light coupling in a photonic crystal waveguide without transition region," Opt. Lett. 33, 2644-2646 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-22-2644

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