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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 31 — Nov. 1, 2011
  • pp: 5957–5965

Theory for the measurement of the linear and nonlinear refractive indices of double-clad fibers using an interferometric technique

Rania H. Abd El-Maksoud and Mona F. Omar  »View Author Affiliations


Applied Optics, Vol. 50, Issue 31, pp. 5957-5965 (2011)
http://dx.doi.org/10.1364/AO.50.005957


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Abstract

Multiple-beam Fizeau fringes are formed across a liquid silvered wedge when it is illuminated by a collimated beam of monochromatic light. Inserting the fiber into the liquid silvered wedge causes the fringes to shift across the fiber region with respect to the fringes at the liquid region. Fringe shift is a function in the geometry of the different regions of the fiber and the refractive index profile of the fiber. In this paper, theoretical models for the fringe shift across double-clad fibers (DCFs) with rectangular, elliptical, circular, and D-shaped inner cladding are developed. An algorithm to reconstruct the linear and nonlinear terms of the refractive index profile of the DCF is outlined. Numerical examples are provided and discussed.

© 2011 Optical Society of America

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(190.0190) Nonlinear optics : Nonlinear optics
(190.3270) Nonlinear optics : Kerr effect
(260.0260) Physical optics : Physical optics
(260.3160) Physical optics : Interference

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 20, 2011
Revised Manuscript: July 21, 2011
Manuscript Accepted: July 22, 2011
Published: October 25, 2011

Citation
Rania H. Abd El-Maksoud and Mona F. Omar, "Theory for the measurement of the linear and nonlinear refractive indices of double-clad fibers using an interferometric technique," Appl. Opt. 50, 5957-5965 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-31-5957

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