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Simulation of three-dimensional optical waveguides by a full-vector beam propagation method

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2 Author(s)
Huang, W.-P. ; Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada ; Xu, C.L.

Simulations of optical guided waves in three-dimensional waveguide structures by a full vector beam propagation method are described. Two sets of coupled equations governing the propagation of the transverse electric and magnetic fields are derived systematically. Polarization dependence and coupling due to the vectorial nature of the electromagnetic fields are considered in the formulations. The governing equations are solved subsequently by finite-difference schemes. The vector BPM is first assessed for a step-index circular fiber by comparing the numerical results with the exact analytical solutions. The guided modes of a rib waveguide are then investigated in detail. Comparisons among the scalar, semi-vector and full-vector simulations of the rib waveguide are made. Finally polarization rotation of a periodically loaded rib waveguide operated fully based on the vector nature of the electromagnetic waves is modeled and simulated

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Quantum Electronics, IEEE Journal of  (Volume:29 ,  Issue: 10 )