Space-Frequency Domain Iterative Method for Modes Analysis of Planar Waveguides
Keywords:
Fourier transform, iterative method, planar waveguide, space-frequencyAbstract
We describe a space-frequency domain iterative algorithm to analyze the modes of planar optical waveguides. The one dimensional Maxwell equation was transformed into space-frequency domain by Fourier transform, and became an integral equation which could be solved by an iterative method. For any refractive index profiles, the effective index and mode field distribution are given simultaneously. The numerical result shows that this method is accurate and flexible for planar optical waveguides with any structure.
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