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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 22, Iss. 3 — Mar. 1, 2005
  • pp: 475–480

Angular tolerant resonant grating filters under oblique incidence

Anne Sentenac and Anne-Laure Fehrembach  »View Author Affiliations

JOSA A, Vol. 22, Issue 3, pp. 475-480 (2005)

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Resonant grating filters have been proposed as a promising alternative to multilayer stacks for narrowband free-space filtering. The efficiency of such filters under normal incidence has been demonstrated. Unfortunately, under oblique incidence, the limited angular tolerance of the resonance forbids any filtering applications with use of standard collimated incident beams. Using a multimode planar waveguide and a bi-atom grating, we show how to increase the angular tolerance up to the divergence of standard beams (0.2 deg) without modifying the spectral bandwidth (0.1 nm), under any oblique angle of incidence.

© 2005 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.4510) Fiber optics and optical communications : Optical communications
(120.2440) Instrumentation, measurement, and metrology : Filters
(310.2790) Thin films : Guided waves

Original Manuscript: May 6, 2004
Revised Manuscript: July 16, 2004
Manuscript Accepted: August 31, 2004
Published: March 1, 2005

Anne Sentenac and Anne-Laure Fehrembach, "Angular tolerant resonant grating filters under oblique incidence," J. Opt. Soc. Am. A 22, 475-480 (2005)

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