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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14123
Title: Multi-channel photonic bandgap engineering in hyperbolic graded index materials embedded one-dimensional photonic crystals
Authors: Singh B.K.
Bambole V.
Rastogi, Vipul K.
Pandey P.C.
Published in: Optics and Laser Technology
Abstract: Engineering of multi-channel photonic band gap sensing consequences has been demonstrated in hyperbolic graded index materials embedded one-dimensional (1-D) photonic crystal (PC) in the frequency 150–850 THz region. The multi-channel photonic band gap sensing properties have been investigated by taking into account the reflection and photonic band gap (PBG) spectra of the proposed PC structures. For quarter-wave stacking, we obtain single optical reflection band for band region 646.8 – 434.3 THz with the constituted normal layer refractive index 1.5. Band regions and bandwidths of the single PBG channel can be modulated by changing the refractive index of the constituted normal layer and grading parameter of the hyperbolic graded layer. The number of photonic bands increases with increasing the layer thickness of the GPC structures and leads to work as multi-channel PBG sensors. The operation frequency of the multi-channel PBG sensors can also be tuned by changing the constituted normal layer and grading parameter of the hyperbolic graded layer. These properties lead to design the tunable multi-channel optical sensors/filters engineering. Moreover, the demonstration of the reflection phase shift, group velocity, group delay, and electric field distributions shows the effect of hyperbolic graded index materials on the propagation of light in 1-D PCs. With the engineering of tunable PBGs and structure controllability, hyperbolic graded index materials embedded 1-D PCs provide a promising way to fabricate tunable optical reflectors and multi-channel optical sensors/filters for future optical devices. © 2020 Elsevier Ltd
Citation: Optics and Laser Technology (2020), 129(): -
URI: https://doi.org/10.1016/j.optlastec.2020.106293
http://repository.iitr.ac.in/handle/123456789/14123
Issue Date: 2020
Publisher: Elsevier Ltd
Keywords: Graded photonic crystals
Muti-channel PBG sensors
Photonic band gap
Reflectors
ISSN: 303992
Author Scopus IDs: 56242223600
57203172824
7006364661
35935213800
Author Affiliations: Singh, B.K., Department of Physics, University of Mumbai, Mumbai, 400 032, India, Department of Physics, Indian Institute of Technology Roorkee247667, India
Bambole, V., Department of Physics, University of Mumbai, Mumbai, 400 032, India
Rastogi, V., Department of Physics, Indian Institute of Technology Roorkee247667, India
Pandey, P.C., Department of Physics, Indian Institute of Technology (BHU), Varanasi, 221005, India
Funding Details: One of the authors (Bipin K. Singh) is thankful to The University Grants Commission , India, for providing financial support in the form of Dr. D. S. Kothari Postdoctoral Fellowship.
Corresponding Author: Singh, B.K.; Department of Physics, University of MumbaiIndia; email: b_singh@iitr.ac.in
Appears in Collections:Journal Publications [PH]

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