Mr. Zheng Xia Profile

Zheng Xia

at Qingdao University

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Proceedings Article | 19 October 2016 Paper

Wide band slow light with large NDBPat any group index in photonic crystal waveguide

Zheng Xia, Changhong Li, Min Wu

Proceedings Volume 10152, 101520M (2016) https://doi.org/10.1117/12.2247332

KEYWORDS: Slow light, Photonic crystals, Waveguides

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Based on combining material schemes and structure optimizing of two-dimensional triangular lattice photonic crystal, one methodology to improve slow light properties are proposed to support large NDBP at any group index in a photonic crystal line defect waveguide. Firstly, the effects of first and second row holes reflective indies n₁ and n₂ has been discussed, respectively. Then, one of the structural parameters, radius of holes in the first row r₁, has been adjusted to extend the range of group index with large NDBP. By properly adjusting various combinations of n₁ and r₁, the value of NDBP higher than 0.319 can be obtained at group index from 50 to 200. The design has shown the feasibility of post-fabrication technology to generate high performance slow light at any group index.

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