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Title: Narrow band and angle-insensitive filter based on one-dimensional photonic crystal containing graded-index defect
Authors: Xu, B
Zheng, G
Wu, Y
Keywords: Angle-insensitive filter
FDTD method
GRIN defect layer
Narrow band-pass filter
One-dimensional photonic crystals
Issue Date: 2015
Publisher: World Scientific
Source: Modern physics letters B, 2015, v. 29, no. 23, 1550128 How to cite?
Journal: Modern physics letters B 
Abstract: Using finite difference time domain (FDTD) method, we numerically investigate one-dimensional photonic crystals (1D PCs) with (AB)mC(BA)m structure, where A and B stand for different dielectric materials, and C the graded-index (GRIN) material. The transmission properties of the multilayer structure have been studied, and the results show that a tunable narrow band-pass filter (BPF) can be obtained by changing gradient coefficients of the GRIN defect layer. For an increasing incident angle, although the transmittance becomes smaller, positions of the resonant peak remain the same, which can act as the angle-insensitive filter.
ISSN: 0217-9849 (print)
1793-6640 (online)
DOI: 10.1142/S0217984915501286
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