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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 68, Iss. 9 — Sep. 1, 1978
  • pp: 1191–1196

Radiation characteristics of a tapered cylindrical optical fiber

C. T. Chang and D. C. Auth  »View Author Affiliations

JOSA, Vol. 68, Issue 9, pp. 1191-1196 (1978)

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Output coupling of light from a conically tapered optical fiber is investigated. Such a technique may be used to provide “wide-angle” illumination from a single fiber of low numerical aperture. Experimental results for a series of fibers of varying taper angles are presented. It is found experimentally that light which is coupled out of a taper is widely dispersed when the taper angle is large. Based upon modified geometrical optics we present a theory which qualitatively predicts the experimentally measured radiation intensity patterns.

© 1978 Optical Society of America

C. T. Chang and D. C. Auth, "Radiation characteristics of a tapered cylindrical optical fiber," J. Opt. Soc. Am. 68, 1191-1196 (1978)

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  1. P. K. Tien, G. Smolinsky, R. J. Martin, "Radiation fields of a tapered film and novel film-to-fiber coupler," IEEE Transactions on Microwave Theory and Technology, MTT-23, p. 79 (1975).
  2. M. P. Lisitsa, L. I. Berezhinskii, M. Y. Valakh, Fiber Optics, (Israel Program for Scientific Translations, New York, 1972), p. 36.
  3. D. Gloge, P. W. Smith, D. L. Bisbee, E. L. Chinnock, "Optical fiber end preparation for low-loss splices," Bell Sys. Tech. J., 52, p. 1579 (1973).
  4. C. T. Chang, J. L. Bjorkstam, "Effect of nonuniform irradiance, and irradiance fluctuations, upon the response of photographic film," J. Opt. Soc. Am., p. 1495 (1975).
  5. W. A. Gambling, J. P. Dakin, D. N. Payne, H. R. D. Sunk, "Propagation model for multimode optical-fibre waveguide," Electron. Lett., 8, p. 260 (May 1972).
  6. J. P. Dakin, W. A. Gambling, H. Matsumura, D. N. Payne, H. R. D. Sunk, "Theory of dispersion in lossless multimode optical fibres," Opt. Commun., 7, p. 1 (1973).

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