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V. KUMAR1,* , A. KUMAR2, KH. S. SINGH1, P. KUMAR3
We show theoretically that it is possible to broaden the omni-directional reflection range by cascading one-dimensional photonic crystals (PCs). For the purpose of designing the broadband reflector at a certain incident angle, the criterion is that the stop bands of cascaded PCs should be adjacent (or overlapped) to each other. We display the reflection spectra of cascaded structure taking air/(AB)5/(AC)n/(AB)5/substrate(SiO2), where (AC)n means that this layer consist n sub layers of AC. We choose SiO2, Te and Ge as A, B and C materials respectively. By increasing the value of n and choosing the appropriate value of lattice period of AC, we can obtain desired range of omni-directional reflection..
Cascaded structure, Omni-directional reflection, Photonic crystal.
V. KUMAR, A. KUMAR, KH. S. SINGH, P. KUMAR, Broadening of omni-directional reflection range by cascade 1D photonic crystal, Optoelectronics and Advanced Materials - Rapid Communications, 5, 5, May 2011, pp.488-490 (2011).
Submitted at: April 14, 2011
Accepted at: May 31, 2011
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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