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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 2 — Jan. 10, 2007
  • pp: 147–153

Varied line-space grating for flat spectral response of coupling to single-mode fiber

X.-P. Huang, Scott M. Spuler, and Andrew D. Sappey  »View Author Affiliations


Applied Optics, Vol. 46, Issue 2, pp. 147-153 (2007)
http://dx.doi.org/10.1364/AO.46.000147


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Abstract

We use a planar linear grating with varied line-space grooves to introduce a tailored one-dimensional phase variation profile that results in an aberrated point-spread function at the focal plane. A design procedure for the period chirp map for such gratings is developed. As an example, we present theoretical and experimental results on a mechanically ruled, varied line-space echelle grating in single-mode fiber-coupled optical multiplexers in the wavelength region of 1545   nm . The varied line-space grating changes the multiplexer's Gaussian spectral response function to a flat-top dependence with reduced sensitivity to source laser wavelength drift.

© 2007 Optical Society of America

OCIS Codes
(050.1590) Diffraction and gratings : Chirping
(060.4230) Fiber optics and optical communications : Multiplexing
(230.1950) Optical devices : Diffraction gratings

ToC Category:
Diffraction and Gratings

History
Original Manuscript: July 7, 2006
Revised Manuscript: September 5, 2006
Manuscript Accepted: September 11, 2006

Citation
X.-P. Huang, Scott M. Spuler, and Andrew D. Sappey, "Varied line-space grating for flat spectral response of coupling to single-mode fiber," Appl. Opt. 46, 147-153 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-2-147


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