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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 19, Iss. 6 — Jun. 1, 2002
  • pp: 1136–1144

Phenomenological theory of filtering by resonant dielectric gratings

Anne-Laure Fehrembach, Daniel Maystre, and Anne Sentenac  »View Author Affiliations


JOSA A, Vol. 19, Issue 6, pp. 1136-1144 (2002)
http://dx.doi.org/10.1364/JOSAA.19.001136


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Abstract

Using a phenomenological theory of diffraction gratings made by perturbing a planar waveguide allows us to deduce important properties of the sharp filtering phenomena generated by this kind of structure when the incident light excites a guided wave. It is shown that the resonance phenomenon occurring in these conditions acts on one of the two eigenvalues of the Hermitian reflection matrix only. As a consequence, we deduce a mathematical expression of the reflectivity and demonstrate that high-efficiency filtering of unpolarized light requires the simultaneous excitation of two uncoupled guided waves. Numerical examples are given.

© 2002 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.4230) Fiber optics and optical communications : Multiplexing
(230.1950) Optical devices : Diffraction gratings
(230.5440) Optical devices : Polarization-selective devices
(230.7400) Optical devices : Waveguides, slab

History
Original Manuscript: October 10, 2001
Manuscript Accepted: December 19, 2001
Published: June 1, 2002

Citation
Anne-Laure Fehrembach, Daniel Maystre, and Anne Sentenac, "Phenomenological theory of filtering by resonant dielectric gratings," J. Opt. Soc. Am. A 19, 1136-1144 (2002)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-19-6-1136

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