Abstract

A nonabsorbing optical waveguide of circular cross section supports leaky modes in addition to the well-known bound modes. The detailed properties of these leaky modes are determined by solving the eigenvalue equation for the modes of a circular dielectric cylinder below their cutoff frequency. The purpose of this paper is to present such solutions together with the associated characteristic mode parameters. The results are presented in graphical form for low order modes and asymptotically for higher order modes. The effects of material absorption on the attenuation of leaky modes are also discussed.

© 1976 Optical Society of America

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