Transactions of Nanjing University of Aeronautics & Astronautics
Parallel-Computing Wavelet-Based FDTD Method for Modeling Nanoscale Optical Resonator
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Abstract:
An efficient wavelet-based finite-difference time-domain (FDTD) method is implemented for analyzing nanoscale optical devices, especially optical resonator.Because of its highly linear numerical dispersion properties the high-spatial-order FDTD achieves significant reduction in the number of cells, i.e. used memory, while analyzing a high-index dielectric ring resonator working as an add/drop multiplexer. The main novelty is that the wavelet-based FDTD model is extended in a parallel computation environment to solve physical problems with large dimensions. To demonstrate the efficiency of the parallelized FDTD model, a mirrored cavity is analyzed. The analysis shows that the proposed model reduces computation time and memory cost, and the parallel computation result matches the theoretical model.
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Supported by the Scientific Research Foundation of Nanjing University of Posts and Telecommunications (NY212008, NY213116); the National Science Foundation of Jiangsu Province (BK20131383).
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