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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 4 — Feb. 15, 2014
  • pp: 781–784

Simple design of slanted grating with simplified modal method

Shubin Li, Changhe Zhou, Hongchao Cao, and Jun Wu  »View Author Affiliations


Optics Letters, Vol. 39, Issue 4, pp. 781-784 (2014)
http://dx.doi.org/10.1364/OL.39.000781


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Abstract

A simplified modal method (SMM) is presented that offers a clear physical image for subwavelength slanted grating. The diffraction characteristic of the slanted grating under Littrow configuration is revealed by the SMM as an equivalent rectangular grating, which is in good agreement with rigorous coupled-wave analysis. Based on the equivalence, we obtained an effective analytic solution for simplifying the design and optimization of a slanted grating. It offers a new approach for design of the slanted grating, e.g., a 1×2 beam splitter can be easily designed. This method should be helpful for designing various new slanted grating devices.

© 2014 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.1960) Diffraction and gratings : Diffraction theory
(050.1970) Diffraction and gratings : Diffractive optics
(230.1360) Optical devices : Beam splitters

ToC Category:
Diffraction and Gratings

History
Original Manuscript: October 15, 2013
Revised Manuscript: December 17, 2013
Manuscript Accepted: January 3, 2014
Published: February 4, 2014

Citation
Shubin Li, Changhe Zhou, Hongchao Cao, and Jun Wu, "Simple design of slanted grating with simplified modal method," Opt. Lett. 39, 781-784 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-4-781


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