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Proceedings Paper

Critical comparison of three modal methods: bidirectional eigenmode expansion propagation method, aperiodic rigorous coupled mode analysis, and harmonic expansion method
Author(s): Jirí Ctyroký; Ivan Richter; Pavel Kwiecien
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Paper Abstract

The performance of three bidirectional modal methods the "classical" bidirectional eigenmode expansion propagation method, the aperiodic rigorous coupled wave analysis (known also as the Fourier modal method), and the mode expansion method based on harmonic expansion are mutually compared using modeling tasks that include eigenmode calculation of a relatively high-contrast planar waveguide, spectral transmittance of a one-dimensional "photonic crystal" filter in a photonic wire, spectral transmittance of a surface plasmon based optical sensor, and a reflectance from a double-groove structure in a high-contrast waveguide. All methods exhibit generally comparable performance, as follows from good mutual agreement of the results and generally comparable computational time. Although all methods use perfectly matched layers as absorbing boundary conditions, their implementation in the aperiodic rigorous coupled wave analysis exhibits significantly stronger attenuation than that used in the other two methods. Thus, significant improvement of the latter methods seems possible.

Paper Details

Date Published: 12 August 2008
PDF: 11 pages
Proc. SPIE 7099, Photonics North 2008, 70991K (12 August 2008); doi: 10.1117/12.806719
Show Author Affiliations
Jirí Ctyroký, Institute of Photonics and Electronics (Czech Republic)
Czech Technical Univ. (Czech Republic)
Ivan Richter, Czech Technical Univ. (Czech Republic)
Pavel Kwiecien, Czech Technical Univ. (Czech Republic)


Published in SPIE Proceedings Vol. 7099:
Photonics North 2008

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