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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 3 — Feb. 4, 2008
  • pp: 2221–2225

Apodisation of photo-induced waveguide gratings using double-exposure with complementary duty cycles

Xuewen Shu, Kate Sugden, and Ian Bennion  »View Author Affiliations

Optics Express, Vol. 16, Issue 3, pp. 2221-2225 (2008)

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We present a novel apodisation scheme for photo-induced waveguide gratings. The apodisation is implemented with double exposures that have reversely varying duty cycles. We have successfully applied the proposed scheme to remove the sidelobes of long period gratings (LPGs). We also observed for the first time super strong sidelobes in LPGs when creating them with only a single varying-duty-cycle exposure. The strong sidelobes can be well explained with a Mach-Zehnder interference model.

© 2008 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: October 5, 2007
Revised Manuscript: December 12, 2007
Manuscript Accepted: December 12, 2007
Published: February 1, 2008

Xuewen Shu, Kate Sugden, and Ian Bennion, "Apodisation of photo-induced waveguide gratings using double-exposure with complementary duty cycles," Opt. Express 16, 2221-2225 (2008)

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Fig.1. Fig. 2. Fig. 3.

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