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Numerical analysis of optical waveguides with the use of Fourier‐series expansion method combined with perfectly matched layer
Author(s) -
Yasumoto Kiyotoshi,
Watanabe Koki,
Ishihara Junya
Publication year - 2002
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10482
Subject(s) - perfectly matched layer , fourier series , series (stratigraphy) , optics , microwave , interference (communication) , physics , fourier transform , boundary (topology) , radiation , boundary value problem , field (mathematics) , mathematics , mathematical analysis , computer science , telecommunications , finite difference time domain method , quantum mechanics , paleontology , channel (broadcasting) , pure mathematics , biology
Abstract A numerical approach for transition problems in optical waveguides is presented, with the use of the Fourier‐series expansion method combined with the absorbing boundary condition by a perfectly matched layer (PML). The optical propagation along a transition is described by a simple matrix algebra. The numerical examples demonstrate that the radiation modes with wider propagation angle are strongly attenuated in the presence of PML, and hence unwanted interference of the boundary‐reflected radiation field to the guided wave field is suppressed. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 34: 422–426, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10482