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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. 18, Iss. 6 — Jun. 1, 2001
  • pp: 1261–1266

Nonpolarizing guided-mode resonant grating filter for oblique incidence

Akio Mizutani, Hisao Kikuta, Kiminori Nakajima, and Koichi Iwata  »View Author Affiliations


JOSA A, Vol. 18, Issue 6, pp. 1261-1266 (2001)
http://dx.doi.org/10.1364/JOSAA.18.001261


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Abstract

A new type of guided-mode resonant grating filter is described. The filter is independent of polarization state for oblique incidence. The filter has a crossed grating structure, and the plane of incidence on the filter contains the symmetric axis of the grating structure. Theoretical considerations and numerical calculations using two-dimensional rigorous coupled-wave analysis show that a rhombic lattice structure is suitable to such filters. In this configuration an incident light wave is diffracted into the waveguide and is divided into two propagation modes whose directions are symmetric with respect to the plane of incidence. In particular, when the propagation directions of the two modes are perpendicular to each other, the fill factor of grating structure can be ∼50%. The filter was designed for an incident angle of 45°. Tolerances of setting errors and fabrication errors for this filter were estimated by numerical calculations.

© 2001 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings

History
Original Manuscript: August 3, 2000
Revised Manuscript: December 11, 2000
Manuscript Accepted: December 12, 2000
Published: June 1, 2001

Citation
Akio Mizutani, Hisao Kikuta, Kiminori Nakajima, and Koichi Iwata, "Nonpolarizing guided-mode resonant grating filter for oblique incidence," J. Opt. Soc. Am. A 18, 1261-1266 (2001)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-18-6-1261

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