Degraded Performance of Photonic Crystal Couplers due to Fabrication Imperfections

作     者：Xiaoyu Mao Yidong Huang Wei zhang Jiangde Peng State Key Lab. of Integrated Optoelectronics Department of Electronic Engineering Tsinghua University Beijing 100084 China 

会议名称：《国际纳光电子学研讨会》

会议日期：2007年

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

摘      要：正The influence of fabrication imperfections on the performance of photonic crystal directional couplers （PCDC）with different structure parameters were investigated theoretically. It was found that the air hole position misalignment perpendicular to the waveguide has a more powerful influence on the transmission efficiency of PCDC than other fabrication imperfection factors,and reducing r/a is helpful to improve the robustness of PCDC.