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Vectorial eigenmode solver for bent waveguides based on mode matching

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3 Author(s)
Prkna, L. ; Inst. of Radio Eng. & Electron., Acad. of Sci. of the Czech Republic, Prague, Czech Republic ; Hubalek, M. ; Ctyroky, J.

Vectorial eigenmode solver for circularly bent dielectric waveguides is described. The approach is strictly analogous to the well-known film mode-matching method for straight waveguides. Accurate calculation of radiation loss is enabled by leaving the calculation window open in the radial direction. In order to increase numerical stability and accuracy, a new computer code was written for cylindrical functions of complex order and argument. A high-contrast bent rib guide is used for comparison of results with a commercial mode solver.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 9 )