用三维并行时域有限差分算法研究光子晶体薄板W3波导传输特性

The Transmission Properties Research of Photonic Crystal Slab W3 Waveguide With The Use of The Parallel 3D FDTD Algorithm

构建了用于高性能并行计算的PC机群环境,将基于此机群环境的三维并行时域有限差分算法用于光子晶体薄板W3波导传输特性研究·性能分析表明:对于大规模问题,机群并行FDTD算法能够获得较理想的加速比·具体计算了W3波导的透射率频谱和光场分布·结果表明:光子晶体薄板W3波导能够实现光的三维约束,其导带中存在着微小禁带(mini-gap)·

High performance parallel computing platforms are built by interconnecting a group of PCs. The parallelized 3D FDTD code is achieved and is useful for the studies of the transmission properties of photonic crystal slab W3 waveguide. The analysis of the performance of parallel environment indicates that for a large-scale computation problem, the parallel FDTD algorithm can achieve a better fixed speedup. Transmission spectrum and field distribution of a photonic crystal slab W3 waveguide are calculated with the use of the presented technique, and the obtained results show that photonic crystal slab W3 waveguide can control the propagation of light in the three directions and there is mini-gap for the guides.