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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 20 — Sep. 26, 2011
  • pp: 19346–19353

The optimal structure of two dimensional photonic crystals with the large absolute band gap

Donglin Wang, Zhongyuan Yu, Yumin Liu, Pengfei Lu, Lihong Han, Hao Feng, Xiaotao Guo, and Han Ye  »View Author Affiliations


Optics Express, Vol. 19, Issue 20, pp. 19346-19353 (2011)
http://dx.doi.org/10.1364/OE.19.019346


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Abstract

This paper reports a new designed square lattice GaAs structure of two-dimensional photonic crystals with absolute band gap approach to 0.1623 (2πc/a), where a is the period of the square lattice. The optimal structure is obtained by combining the Geometry Projection Method and Finite Element Method. Both gradient information and symmetric control points are introduced to reduce the calculation cost. For benefit to the fabrication in reality, the structure is simplified by the combination of triangle and rectangular geometry. Through parameter optimization, the absolute band gap of the new structure is improved to 0.1735 (2πc/a), which is much larger than those reported before. The new PC structure is convenient and stab for fabrication, and may be found applications in the future optical devices.

© 2011 OSA

OCIS Codes
(230.0230) Optical devices : Optical devices
(230.5298) Optical devices : Photonic crystals

ToC Category:
Photonic Crystals

History
Original Manuscript: August 15, 2011
Manuscript Accepted: September 1, 2011
Published: September 20, 2011

Citation
Donglin Wang, Zhongyuan Yu, Yumin Liu, Pengfei Lu, Lihong Han, Hao Feng, Xiaotao Guo, and Han Ye, "The optimal structure of two dimensional photonic crystals with the large absolute band gap," Opt. Express 19, 19346-19353 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-20-19346


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