Abstract

The radiation characteristics of an abruptly terminated five-layer symmetric monomode slab waveguide are treated analytically by means of an integral equation, which has been appropriately chosen for the corresponding boundary-value problem of the even TE modes. To obtain the solutions of this equation, representing the electric-field distribution on the terminal plane, a Neumann-series iterative procedure is applied. Then the reflection coefficient of the surface wave, the power of the reflected radiation modes, and the far-field radiation pattern are computed. Numerical results are presented for several cases of abruptly terminated waveguides.

© 1997 Optical Society of America

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