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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 68, Iss. 5 — May. 1, 1978
  • pp: 572–576

Equal excitation of all modes on an optical fiber

Colin Pask  »View Author Affiliations


JOSA, Vol. 68, Issue 5, pp. 572-576 (1978)
http://dx.doi.org/10.1364/JOSA.68.000572


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Abstract

In the literature on fiber optics the notions of Lambertian and totally incoherent sources and their efficiency for exciting all waveguide modes are often confused. In this paper a general electromagnetic theory approach is used to establish the nature of the field which does excite all modes equally and independently. The sense in which this source is incoherent, and its Lambertian nature, are exhibited. The relations between modal and asymptotic or geometrical optics formulas for mode counting and description of intensity propagation are clarified for complete fiber excitation.

© 1978 Optical Society of America

Citation
Colin Pask, "Equal excitation of all modes on an optical fiber," J. Opt. Soc. Am. 68, 572-576 (1978)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-68-5-572


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References

  1. W. H. Carter and E. Wolf, "Coherence properties of Lambertian and non-Lambertian sources," J. Opt. Soc. Am. 65, 1067–1071 (1975).
  2. M. Born and E. Wolf, Principles of Optics (Pergamon, Oxford, 1970), Ch. 10.
  3. D. J. Carpenter and C. Pask, "The angular spectrum approach to diffraction of partially coherent light," Opt. Acta 24, 939–948 (1977).
  4. D. J. Carpenter and C. Pask, "Geometric optics approach to fibre excitation by partially coherent sources," Opt. Quant. Electron. 9, 373–382 (1977).
  5. D. Marcuse, Light Transmission Optics (Van Nostrand, New York, 1972).
  6. R. E. Collin, Field Theory of Guided Waves (McGraw-Hill, New York, 1960).
  7. O. Bryngdahl, "Evanescent waves in optical imaging", Prog. Op. XI, 167–221 (1973).
  8. H. P. Baltes, "Coherence and the radiation laws," Appl. Phys. 12, 221–244 (1977).
  9. C. Pask, A. W. Snyder, and D. J. Mitchell, "Number of modes on optical waveguides," J. Opt. Soc. Am. 65, 356–357 (1975).
  10. D. N. Payne, F. M. E. Sladen, and M. J. Adams, "Index profile determination in graded index fibres," First European Conference on Optical Fibre Communication (IEE Press, London, 1975).
  11. J. A. Arnaud, Beam and Fiber Optics (Academic, New York, 1976).
  12. M. C. Hudson, "Calculation of the maximum coupling efficiency into multimode optical waveguides," Appl. Opt. 13, 1029–1033 (1974).
  13. A. W. Snyder and C. Pask, "Incoherent illumination of an optical fiber," J. Opt. Soc. Am. 63, 806–812 (1973).
  14. D. Marcuse, "Excitation of parabolic-index fibers with incoherent sources," Bell Sys. Tech. J. 54, 1507–1530 (1975).
  15. A. W. Snyder, C. Pask, and D. J. Mitchell, "Light-acceptance property of an optical fiber," J. Opt. Soc. Am. 63, 59–64 (1973).
  16. R. Sammut, C. Pask, and A. W. Snyder, "Excitation and power of the unbound modes within a circular dielectric waveguide," Proc. IEEE 122, 25–33 (1975).
  17. R. Sammut and A. W. Snyder, "Leaky modes on a dielectric waveguide: orthogonality and excitation," Appl. Opt. 15, 1040–1044 (1976).

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