The properties of cutoff frequency in two-dimensional superconductor photonic crystals

Abstract

In this paper, by means of frequency-dependent plane wave expansion method we investigate the properties of photonic band structures in two-dimensional superconductor photonic crystals. Effects of cut-off frequency are investigated by various parameters such as filling factor, the lattice constant alteration, threshold frequency of the superconductor, and shape of the rods as well. We show that the cut-off frequency can be efficiently tuned by the operating temperature. Moreover, it can be tailored by changing the dielectric constant of the background and the threshold frequency of the superconductor material.

Keywords:

• cut-off frequency
• 2DSPCs
• PWM
• PBG
• filling factor

Acknowledgments

The first author would like to thank Prof Chien-Jang Wu, National Taiwan Normal University, Taiwan for his fruitful discussion and his good cooperation.