High-Order Accurate Integral Equation Based Mode Solver for Layered Nanophotonic Waveguides
2021 IEEE MTT-S International Microwave Symposium (IMS)(2021)
Abstract
We present a novel high-order boundary integral equation based mode solver for layered nanophotonic waveguides featuring corners and junctions. The proposed solver leverages an indirect single-trace formulation for composite dielectrics which leads to a Muller-like integral equation posed on the cross-section of the material interfaces, and a high-order Nystrom discretization for domains with corners. A variety of numerical examples demonstrate the superior accuracy of the proposed methodology as compared to standard commercial finite element and finite difference based mode solvers.
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Key words
mode solver,dielectric waveguides,nanophotonics,layered media,integral equations
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