A bidirectional beam propagation method for periodic waveguides

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)325-327
Journal / PublicationIEEE Photonics Technology Letters
Issue number3
Publication statusPublished - Mar 2002


For wave-guiding structures with multiple longitudinal reflecting interfaces, a bidirectional beam propagation method has been developed using a scattering operator formulation and rational approximations to the square root and the propagation operators. For periodic waveguides, it is possible to significantly speed up the method when scattering operators for a waveguide with s1 + s2 periods are obtained directly from those operators associated with waveguides having s1 and s2 periods. The required computing time is then proportional to the logarithm of the total number of periods.

Research Area(s)

  • Bidirectional beam propagation, Distributed-feedback structure, Multiple reflections, Periodic waveguide