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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

  • Editor: Stephen A. Burns
  • Vol. 23, Iss. 3 — Mar. 1, 2006
  • pp: 646–650

Effects of surface roughness on the performance of an etched diffraction grating demultiplexer

Jun Song, Ning Zhu, and Sailing He  »View Author Affiliations


JOSA A, Vol. 23, Issue 3, pp. 646-650 (2006)
http://dx.doi.org/10.1364/JOSAA.23.000646


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Abstract

The fabrication tolerance of surface roughness on the performance [such as the insertion loss, the polarization-dependent loss (PDL), and the chromatic dispersion] of an etched diffraction grating demultiplexer is analyzed by using an accurate method of moments. The results show that both the insertion loss and the chromatic dispersion rapidly increase as the roughness of the grating facets increases. Appropriate residual roughness of the shaded facets can reduce the PDL of the demultiplexer, and the mechanism for the existence of an optimal residual roughness is explained.

© 2006 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(230.3120) Optical devices : Integrated optics devices
(230.7390) Optical devices : Waveguides, planar

ToC Category:
Optical Devices

History
Original Manuscript: May 3, 2005
Revised Manuscript: July 27, 2005
Manuscript Accepted: August 6, 2005

Citation
Jun Song, Ning Zhu, and Sailing He, "Effects of surface roughness on the performance of an etched diffraction grating demultiplexer," J. Opt. Soc. Am. A 23, 646-650 (2006)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-23-3-646

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