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J. Appl. Phys. 111, 023508 (2012); http://dx.doi.org/10.1063/1.3677988 (7 pages)

Polarization-independent negative refraction effect in SiO2-GaAs annular photonic crystals

Li-Yong Jiang1, Hong Wu1, Wei Jia1,2, and Xiang-Yin Li1

1Department of Physics, Nanjing University of Science and Technology, Nanjing 210094, China
2Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom

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(Received 25 August 2011; accepted 15 December 2011; published online 23 January 2012)

We systematically investigated the negative refraction effect for both TM and TE polarization modes in SiO2-GaAs annular photonic crystals with triangular lattice. It was found that, in comparison with normal triangular-lattice air-holes photonic crystals, the annular photonic crystals have much lower and flatter band structures, which are quite beneficial to the formation of convex equifrequency surfaces for both polarizations. Further analyses on equifrequency surfaces and the electric field distribution of annular photonic crystals with different parameters have not only first demonstrated the possibility of polarization-independent negative refraction effect in annular photonic crystals, but also revealed some important laws to control the working frequency and performance of this remarkable effect.

© 2012 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. MODEL AND METHODS
  3. THE POSSIBILITY OF POLARIZATION-INDEPENDENT NEGATIVE REFRACTIVE IN NORMAL AIR-HOLES PCS
  4. THE POSSIBILITY OF POLARIZATION-INDEPENDENT NEGATIVE REFRACTIVE IN APCs
  5. SUMMARY

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0021-8979 (print)  
1089-7550 (online)

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