Angular Spectrum of Modified Cylindrical Wave-Functions

  • R. Borghi
  • F. Frezza
  • M. Santarsiero
  • G. Schettini


The plane-wave expansion of the modified cylindrical functions, i.e., the product of the mth-order modified Bessel function K m and the angular factor exp(imϑ), is given. This expansion, which is found to involve only evanescent plane waves, may be used in the study of coupling phenomena between circular and planar guiding structures.

Cylindrical Waves Plane- Wave Spectra Dielectric Waveguides Optical Fibers 


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Copyright information

© Plenum Publishing Corporation 1999

Authors and Affiliations

  • R. Borghi
    • 1
    • 4
  • F. Frezza
    • 2
  • M. Santarsiero
    • 3
    • 4
  • G. Schettini
    • 1
  1. 1.Dipartimento di Ingegneria ElettronicaUniversità degli Studi Roma TreRomeItaly
  2. 2.Dipartimento di Ingegneria ElettronicaUniversità degli Studi La SapienzaRomeItaly
  3. 3.Dipartimento di FisicaUniversità degli Studi Roma TreRomeItaly
  4. 4.Istituto Nazionale per la Fisica della MateriaRomeItaly

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