Generalized guided-wave mode calculations in graded-index fibers

E. Castro; J. Puerta; P. Martin

doi:10.1117/12.591616

21 October 2004 Generalized guided-wave mode calculations in graded-index fibers

E. Castro, J. Puerta, P. Martin

Proceedings Volume 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications; (2004) https://doi.org/10.1117/12.591616
Event: 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, 2004, Porlamar, Venezuela

Abstract

In this paper a novel approximated method is introduce to calculate guided-wave modes in graded-index fibers. Useful solutions have been obtained on the whole range of r for the corresponding scalar wave equation, using two-point quasirational approximations. This approach is better than the WKB approximation which is good only for the ray optic pictures and when the phase changes at the caustic are ignored. Here an adequate change of variables have been found that allows determine power series and asymptotic expansions suitable for application of the two-point quasi-rational approximant method. The results presented here agree very well with the numerical solutions.

Citation Download Citation

E. Castro, J. Puerta, and P. Martin "Generalized guided-wave mode calculations in graded-index fibers", Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); https://doi.org/10.1117/12.591616

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