Exact Derivation of the Coupling Coefficient in Corrugated Waveguides with Arbitrary Cross-Section: Application to Optical Fibers

Amos Hardy

doi:10.1109/3.364407

Exact Derivation of the Coupling Coefficient in Corrugated Waveguides with Arbitrary Cross-Section: Application to Optical Fibers

Amos Hardy^*

^*Corresponding author for this work

Department of Electrical Engineering - Physical Eng.

Research output: Contribution to journal › Article › peer-review

Abstract

Expressions for the coupling coefficient in corrugated waveguides with rectangular tooth shape are derived based on local mode expansion. The expressions are exact to first order in the tooth height (or index difference) for any waveguide cross-section. When applied to slab waveguides, the familiar expressions are obtained. Specializing to weakly guiding fibers, with step index profile, result in simple expressions in terms of the fiber parameters, which are compatible with the effective index method.

Original language	English
Pages (from-to)	505-511
Number of pages	7
Journal	IEEE Journal of Quantum Electronics
Volume	31
Issue number	3
DOIs	https://doi.org/10.1109/3.364407
State	Published - Mar 1995

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abstract = "Expressions for the coupling coefficient in corrugated waveguides with rectangular tooth shape are derived based on local mode expansion. The expressions are exact to first order in the tooth height (or index difference) for any waveguide cross-section. When applied to slab waveguides, the familiar expressions are obtained. Specializing to weakly guiding fibers, with step index profile, result in simple expressions in terms of the fiber parameters, which are compatible with the effective index method.",

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Exact Derivation of the Coupling Coefficient in Corrugated Waveguides with Arbitrary Cross-Section: Application to Optical Fibers

Abstract

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