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- Lundin, Richard
(författare)
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A General Power-Series Expansion Method for Exact Analysis of the Guided Modes in an Optical Fiber
- 1986
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Ingår i: Journal of Lightwave Technology. - 0733-8724. ; 4:11, s. 1617-1625
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Tidskriftsartikel (refereegranskat)abstract
- A power-series expansion method for rigorous analysis of the guided modes in a cylindrical, radially inhomogeneous, dielectric waveguide is presented. The method is developed for an arbitrary piece-wise polynomial permittivity profile. The field solutions of the inhomogeneous core are constructed by a sequence of power-series expansions. Convergence is ensured and accuracy maintained by regulating the distance between successive expansion points. The characteristic equation and the cutoff conditions are expressed in a unified manner as a set of functions. The method presented is competitive in terms of accuracy achieved and computing time required.
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