Abstract

A variational method is employed to analyze optical waveguides. Stationary expressions are derived that can be used with approximate trial fields that do not necessarily satisfy boundary conditions. The so-called birefringence effect is studied in single-mode optical waveguides with rectangular cross section. It is shown that the variational analysis gives the propagation constants to higher accuracy than the accuracy of the test fields. Some results on specific waveguides are presented and compared to other approaches.

© 1982 Optical Society of America

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