Geometrically distributed aperiodic circular photonic crystals with broad and isotropic photonic band gaps |
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| Authors: | Qing Guo Du G Alagappan XW Sun P Wu |
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| Institution: | a School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singaporeb Institute of High Performance Computing, 1 Fusionopolis Way, #16-16 Connexis, Singapore 138632, Singapore |
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| Abstract: | In this paper, a new type of circular photonic crystal (CPC) with a geometrical distribution of concentric layers is presented. A broad and isotropic photonic band gap is achieved using this geometrically distributed CPC (GCPC). Also, the influence of the number of concentric layers to the overall band gap of GCPC is studied. It is demonstrated that the band gap broadens with a red shift when the number of concentric layers is increased. The reason for the red shift of the band gap is further investigated. |
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| Keywords: | Geometrically distributed Photonic Crystal Photonic band gap Broadening |
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