NDLI: Effects of Structure Parameters and Structural Deviations on the Characteristics of Photonic Crystal Directional Couplers

Content Provider	IEEE Xplore Digital Library
Author	Xiaoyu Mao Yidong Huang Kaiyu Cui Chao Zhang Wei Zhang Jiangde Peng
Copyright Year	1983
Abstract	The effects of structure parameters and structural deviations on the characteristics of photonic crystal directional couplers (PCDCs) were analyzed through a systematic simulation study. The relationship between coupling characteristics and structure parameters was discussed. The results reveal that the remained power in the coupling region is detrimental to reducing the insertion loss of PCDCs, especially for the PCDCs with shorter coupling length. An improved structure, which increases the radii of air holes in the post coupling region, was proposed to suppress the remained power and reduce the insertion loss effectively. The influence of structural deviations, which is caused by fabrication imperfections and results in the mismatch between experimental results and theoretical predictions, was also investigated using statistical methods. The simulation results show that the air hole position misalignment perpendicular to the waveguide direction has the largest effect on the insertion loss of PCDCs, and reducing r/a is helpful to improving the robustness of PCDCs.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	4049
Ending Page	4054
Page Count	6
File Size	801327
File Format	PDF
ISSN	07338724
Volume Number	27
Issue Number	18
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photonic crystals Directional couplers Optical waveguides Insertion loss Optical losses Optical sensors Coupling circuits Lattices Fabrication Statistical analysis structure parameters Couplers photonic crystals structural deviations
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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