二维介质柱光子晶体波导的优化设计(英文)

Optimal Design for Two-Dimensional Square Lattice Dielectric Cylinder Photonic Crystal Waveguides

通过改变靠近导光区域介质柱的直径和周期，优化设计了二维介质柱光子晶体波导．结果表明：单独增大和减小柱的直径以及增大柱的周期不能提高波导的传输特性；单独减小柱的周期能提高波导的传输特性，获得传输系数小于1dB，带宽80nm的波谱；同时减小柱的直径及周期能够极大的提高波导的传输特性，得到了带宽为150～250nm，传输系数小于1dB的波谱．

An effective optimal method by changing the size and periodicity of the pillars next to the guiding region is applied to two-dimensional dielectric pillar of photonic crystal waveguides. It has been shown that individual modifying the size or periodicity of pillars close to the guiding region can not improve the performance sufficiently; only simultaneous decreasing the pillar periodicity and size can significantly improve the transmission properties. 150-250 nm bandwidth, less than 1 dB loss are observed in calculation.