作者: S. Choudhary , L. B. Felsen
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摘要: A new approach to optical propagation in graded index fibers, based on local tracking of evanescent waves, is developed. The theory furnishes the high-frequency asymptotic expansion modal field and yields explicit tractable expressions for coefficients. When tested parabolic profile, series generated by method found agree term with known exact result. then applied polynomial profiles which solutions are not available.