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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 8 — Mar. 10, 2009
  • pp: 1573–1582

Characterization of graded index optical fibers by digital holographic interferometry

Hamdy H. Wahba and Thomas Kreis  »View Author Affiliations

Applied Optics, Vol. 48, Issue 8, pp. 1573-1582 (2009)

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For the first time to our knowledge, digital holography is used to determine the distribution of parabolic or nonparabolic refractive index fields in graded index optical fibers. The fiber is embedded in an index matching fluid whose refractive index can be varied to a matching and mismatching index with respect to that of the cladding. In experiments for both cases high precision phase-shifting digital holographic interferometry is applied with numerical evaluation employing the multilayer model for recognition of the refraction. Due to the higher redundancy in the multiple phase-shifted holograms better accuracy can be obtained compared to classical two-beam interferometry. Therefore the holographic method is recommended as a nondestructive and noncontacting method for characterizing graded index optical fibers.

© 2009 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(090.2880) Holography : Holographic interferometry
(100.2650) Image processing : Fringe analysis
(090.1995) Holography : Digital holography

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: October 27, 2008
Manuscript Accepted: January 25, 2009
Published: March 6, 2009

Hamdy H. Wahba and Thomas Kreis, "Characterization of graded index optical fibers by digital holographic interferometry," Appl. Opt. 48, 1573-1582 (2009)

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