Frank-Condon principle and adjustment of optical waveguides with nonhomogeneous refractive indices
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The adjustment of two different selfocs is considered using both exact formulas for the mode-connection coefficients expressed in terms of Hermite polynomials of several variables and a qualitative approach based on the Frank-Condon principle. Several examples of the refractive-index dependence are studied and illustrative plots for these examples are presented. The connection with the tomographic approach to quantum states of a two-dimensional oscillator and the Frank-Condon factors is established.
8 pages, 4 figures, published version (layout of figures changed, typos corrected, references added)
8 pages, 4 figures, published version (layout of figures changed, typos corrected, references added)