Anisotropic annular photonic crystal structure for large absolute band gap

Yong-ping Li; Peng Shi; Kun Huang

doi:10.1117/12.863854

10 September 2010 Anisotropic annular photonic crystal structure for large absolute band gap

Yong-ping Li, Peng Shi, Kun Huang

Proceedings Volume 7756, Active Photonic Materials III; 77561C (2010) https://doi.org/10.1117/12.863854
Event: SPIE NanoScience + Engineering, 2010, San Diego, California, United States

Abstract

A two-dimensional anisotropic annular photonic crystal structure is presented to obtain an absolute photonic band gap. This structure is composed of circular air holes and dielectric rods in a triangular lattice. Uniaxial crystal is introduced to photonic crystal with extraordinary axis parallel to the extension direction of rods. The role of each dielectric and geometric parameter is investigated and a mid-gap ratio above 35% is realized by the parameter optimization. Large gap favors the structure with negative uniaxial veins and positive uniaxial rods. As the air-hole radius scales up, the dielectric-rods radius to sustain the maximum band gap scales down. The positive uniaxial material Tellurium is used to achieve a large polarization-insensitivity gap.

Citation Download Citation

Yong-ping Li, Peng Shi, and Kun Huang "Anisotropic annular photonic crystal structure for large absolute band gap", Proc. SPIE 7756, Active Photonic Materials III, 77561C (10 September 2010); https://doi.org/10.1117/12.863854

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