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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 13 — Jul. 1, 2013
  • pp: 15144–15154

Coupling light into a slow-light photonic-crystal waveguide from a free-space normally-incident beam

P. Hamel, P. Grinberg, C. Sauvan, P. Lalanne, A. Baron, A.M. Yacomotti, I. Sagnes, F. Raineri, K. Bencheikh, and J.A. Levenson  »View Author Affiliations


Optics Express, Vol. 21, Issue 13, pp. 15144-15154 (2013)
http://dx.doi.org/10.1364/OE.21.015144


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Abstract

We present a coupler design allowing normally-incident light coupling from free-space into a monomode photonic crystal waveguide operating in the slow-light regime. Numerical three-dimensional calculations show that extraction efficiencies as high as 80% can be achieved for very large group indices up to 100. We demonstrate experimentally the device feasibility by coupling and extracting light from a photonic crystal waveguide over a large group-index range (from 10 to 60). The measurements are in good agreement with theoretical predictions. We also study numerically the impact of various geometrical parameters on the coupler performances.

© 2013 OSA

OCIS Codes
(230.7400) Optical devices : Waveguides, slab
(220.4241) Optical design and fabrication : Nanostructure fabrication
(130.5296) Integrated optics : Photonic crystal waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: March 14, 2013
Revised Manuscript: May 24, 2013
Manuscript Accepted: May 29, 2013
Published: June 18, 2013

Citation
P. Hamel, P. Grinberg, C. Sauvan, P. Lalanne, A. Baron, A.M. Yacomotti, I. Sagnes, F. Raineri, K. Bencheikh, and J.A. Levenson, "Coupling light into a slow-light photonic-crystal waveguide from a free-space normally-incident beam," Opt. Express 21, 15144-15154 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-13-15144


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