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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 70, Iss. 1 — Jan. 1, 1980
  • pp: 40–48

Scattering from an off-axis inhomogeneity in step-index optical fibers: radiation loss

A. Safaai-Jazi and G. L. Yip  »View Author Affiliations

JOSA, Vol. 70, Issue 1, pp. 40-48 (1980)

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An exact analysis using the Green’s function formulation of an arbitrarily oriented off-axis dipole in a three-layer cylindrical dielectric waveguide is carried out. The practical significance of such a formulation is illustrated by its immediate application to the problem of radiation due to scattering from an arbitrarily located discrete inhomogeneity in step-index fibers in which the dominant HE1 1 mode propagates. For small dielectric differences between the adjacent layers, the analysis yields radiation loss that agrees well with that evaluated from the infinite-medium approximation. However, the spatial distribution of the radiation loss differs markedly from that predicted by the infinite-medium approximation.

© 1980 Optical Society of America

A. Safaai-Jazi and G. L. Yip, "Scattering from an off-axis inhomogeneity in step-index optical fibers: radiation loss," J. Opt. Soc. Am. 70, 40-48 (1980)

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  1. F. R. Kapron, D. E. Keck, and R. D. Maurer, "Radiation losses in glass optical waveguides," IEE Conf. Publ. London 71, 148–153, (1970).
  2. J. W. Duncan, "The efficiency of excitation of a surface mode on a dielectric cylinder," IRE Trans. MTT-7, 257–268 (1959).
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  11. A. Safaai-Jazi and G. L. Yip, "Scattering from an arbitrarily located off-axis inhomogeneity in a step-index optical fiber," IEEE-MTT-S International Microwave Symposium, Session on "Fiber and Integrated Optics," Digest, 113–115 (June, 1978).
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