Abstract We propose a ring photonic crystal working in the near infrared region, where the air holes in the background material GaAs are arranged to form a series of rings. We find that the band gaps do not depend on the incident direction, and only a small number of rows are needed to create a frequency gap in the transmission spectrum. The transmission spectra of both P and S polarizations show that there is a complete bandgap in the hexagonal ring photonic crystals and the ratio of gap width to mid-gap frequency is as high as 11%.
Received: 13 November 2003
Revised: 27 April 2004
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No 60345008 ) and the State Key Development Program for Basic Research of China (Grant No 2001CB6104).
Cite this article:
Xu Xing-Sheng (许兴胜), Wang Yi-Quan (王义全), Han Shou-Zheng (韩守振), Cheng Bing-Ying (程丙英), Zhang Dao-Zhong (张道中) Two-dimensional ring-type photonic crystals in the near-infrared region 2004 Chinese Physics 13 1474
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