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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 31, Iss. 9 — Mar. 20, 1992
  • pp: 1229–1233

Index profile of multilayer fibers of an elliptical cross-section

T. Z. N. Sokkar  »View Author Affiliations


Applied Optics, Vol. 31, Issue 9, pp. 1229-1233 (1992)
http://dx.doi.org/10.1364/AO.31.001229


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Abstract

A mathematical formula is derived from the multiple-beam Fizeau fringers crossing an elliptical multilayer fiber. A formula for the two-beam interference fringes crossing this fiber is also given. A model that divides the elliptical fiber cross-section into elliptical zones of constant refractive index is assumed. The index profile of the poly(aryl-ether-ether-ketone) fiber is calculated by using the mathematical formulas. Microinterferograms of both the multiple-beam Fizeau fringes and the totally duplicated image of the fiber from a two-beam intereference microscope are used for the determination of the refractive-index profile of the fiber. The cross-sectional shape is determined from the diffraction pattern of a He–Ne laser beam. Microinterferograms are given for illustration.

© 1992 Optical Society of America

History
Original Manuscript: February 1, 1991
Published: March 20, 1992

Citation
T. Z. N. Sokkar, "Index profile of multilayer fibers of an elliptical cross-section," Appl. Opt. 31, 1229-1233 (1992)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-31-9-1229

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