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1 March 1992 Scheme for fast calculation of guided modes in planar optical waveguides
E. Jan de Jong
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Proceedings Volume 1603, Education in Optics; (1992) https://doi.org/10.1117/12.57889
Event: Education in Optics, 1991, Leningrad, Russian Federation
Abstract
A new, two-step scheme for the calculation of complex propagation constants in planar multilayer waveguides is presented. In the first step, by introducing a 'Mode function', a fast determination of an approximate value of the complex propagation constant for a chosen waveguide mode is found. In the second step, in which a fast root-finding algorithm is used, the precise value of the propagation constant is calculated. The result is a significant speeding up of the computational process in comparison to traditional methods of determining complex propagation constants. Implemented in Turbo Pascal Version 5.5 on an MS-DOS AT personal computer with co-processor and 10 MHz clock frequency, the propagation constant of a four layer channel waveguide with absorbing layers can be computed, using the effective index method, in 4 seconds after which the field profiles can be presented within a few seconds.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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E. Jan de Jong "Scheme for fast calculation of guided modes in planar optical waveguides", Proc. SPIE 1603, Education in Optics, (1 March 1992); https://doi.org/10.1117/12.57889
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KEYWORDS
Waveguides
Waveguide modes
Wave propagation
Interfaces
Channel waveguides
Refractive index
Thin films
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