Abstract Using the plane-wave expansion method, we have calculated and analysed the changes of photonic band structures arising from two kinds of deformed lattices, including the stretching and shrinking of lattices. The square lattice with square air holes and the triangular lattice with circular air holes are both studied. Calculated results show that the change of lattice size in some special ranges can enlarge the band gap, which depends strongly on the filling factor of air holes in photonic crystals; and besides, the asymmetric band edges will appear with the broken symmetry of lattices.
Received: 17 May 2005
Revised: 29 August 2005
Accepted manuscript online:
(Basis sets (LCAO, plane-wave, APW, etc.) and related methodology (scattering methods, ASA, linearized methods, etc.))
Fund: Project supported by the National High Technology Research and Development Program of China (Grant No
2003AA311020), the National Natural Science Foundation of China (Grant No 90301007), the Special Funds for Major State Basic Research Program of China (Grant No G001CB3095).
Cite this article:
Cai Xiang-Hua (蔡向华), Zheng Wan-Hua (郑婉华), Ma Xiao-Tao (马小涛), Ren Gang (任刚), Xia Jian-Bai (夏建白) Photonic band structures of two-dimensional photonic crystals with deformed lattices 2005 Chinese Physics 14 2507
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