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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 34 — Dec. 1, 2001
  • pp: 6166–6169

Improvement in the measurement of index modulation along an optical fiber grating by movement of the probe spot perpendicularly to the fiber axis

David Ramecourt, Pascal Bernage, Pierre Niay, Marc Douay, and Isabelle Riant  »View Author Affiliations


Applied Optics, Vol. 40, Issue 34, pp. 6166-6169 (2001)
http://dx.doi.org/10.1364/AO.40.006166


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Abstract

We demonstrate a large improvement in the efficiency of the method proposed by Krug et al. [Opt. Lett. 20, 1767 (1995)] to measure the amplitude of the refractive-index modulation along a fiber Bragg grating. The basic idea consists of using what to our knowledge is a new modulation scheme for the probe beam that not only allows the user to get a better discrimination of the probe light incoherently scattered by the fiber from that scattered by the grating but also facilitates alignment of the setup.

© 2001 Optical Society of America

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(350.2770) Other areas of optics : Gratings

History
Original Manuscript: January 11, 2001
Revised Manuscript: June 6, 2001
Published: December 1, 2001

Citation
David Ramecourt, Pascal Bernage, Pierre Niay, Marc Douay, and Isabelle Riant, "Improvement in the measurement of index modulation along an optical fiber grating by movement of the probe spot perpendicularly to the fiber axis," Appl. Opt. 40, 6166-6169 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-34-6166

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