Propagation of the radiation field excited on discontinuities of optical waveguides |
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Authors: | E. A. Romanova E. V. Becker M. Marciniak |
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Affiliation: | (1) Saratov State University, Astrakhanskaya 83, 410026 Saratov, Russia;(2) National Institute of Telecommunications, Szachowa 1, 04-894 Warsaw, Poland |
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Abstract: | Numerical and semi-analytical techniques widely used to model the complicated structure of the radiation field excited on sharp and smooth discontinuities of a dielectric slab are reviewed. Comparative analysis of the radiation field modelling by the fast Fourier transformation-beam propagation method (FFT-BPM) and the finite difference(FD)-BPM is presented. Propagation of a higher-order mode through the cut-off cross-section of smooth and sharp discontinuities is simulated numerically by the FD-BPM, the total field is analysed using the leaky mode approach. |
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Keywords: | beam propagation methods non-linear optical phenomena optical waveguides |
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