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Full-vectorial wave propagation in semiconductor optical bending waveguides and equivalent straight waveguide approximations

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5 Author(s)
Lui, W.W. ; Optoelectron. Technol. Res. Lab., Kanagawa, Japan ; Xu, C.L. ; Hirono, T. ; Yokoyama, K.
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Device characteristics of optical polarization rotators are founded upon the vector properties of the Maxwell equations. Recently, a bending waveguide based polarization rotator has been proposed and demonstrated. To provide a rigorous basis for the analysis and design of this polarization rotator, the full-vectorial wave equations for both E&oarr; and H&oarr;-field in bending waveguides are derived. It is found from these wave equations that under a broad range of circumstances, a bending waveguide can be analyzed using the equivalent straight waveguide approximation. Details of the model for optical polarization rotators, which is based on the coupled-mode theory, will be described in a companion paper

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Lightwave Technology, Journal of  (Volume:16 ,  Issue: 5 )