Tunable Mirror and Multi-channel Filter Based on One-dimensional Exponentially Graded Photonic Crystals

Bipin Kumar Singh, Praveen Chandra Pandey

2015

Abstract

A study on the tunability of photonic and Omni-directional band gaps has been demonstrated theoretically in one-dimensional (1-D) photonic crystals having one of the layers as exponential graded index materials and other layers of constant refractive index materials. Using numerical simulations, we have investigated the effect of relative parameters of exponential graded layers on the photonic and Omni-directional band gaps in 1-D graded photonic crystals (GPCs). We observe that the number of photonic band gaps increases with increase of the layer thicknesses and their bandwidths can be controlled by the contrast between initial and final refractive index of the graded layers. Moreover, we have studied the Omni-directional band gaps in quarter-wave and latent type layer stacking arrangements. Further, we obtained the range of refractive indices and thicknesses of constituted layers at which omnidirectional band gaps occurs. Accordingly, we find that the photonic as well as Omni-directional band gaps of desired bandwidths can be obtained by selecting appropriate parameters in GPCs. Our work will be useful in design of mirrors, channel filters, Optical sensors, Omni-directional reflectors etc. and provide more design freedom for alternative photonic devices.

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Paper Citation


in Harvard Style

Singh B. and Pandey P. (2015). Tunable Mirror and Multi-channel Filter Based on One-dimensional Exponentially Graded Photonic Crystals . In Proceedings of the 3rd International Conference on Photonics, Optics and Laser Technology - Volume 2: PHOTOPTICS, ISBN 978-989-758-093-2, pages 22-33. DOI: 10.5220/0005333600220033


in Bibtex Style

@conference{photoptics15,
author={Bipin Kumar Singh and Praveen Chandra Pandey},
title={Tunable Mirror and Multi-channel Filter Based on One-dimensional Exponentially Graded Photonic Crystals},
booktitle={Proceedings of the 3rd International Conference on Photonics, Optics and Laser Technology - Volume 2: PHOTOPTICS,},
year={2015},
pages={22-33},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005333600220033},
isbn={978-989-758-093-2},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 3rd International Conference on Photonics, Optics and Laser Technology - Volume 2: PHOTOPTICS,
TI - Tunable Mirror and Multi-channel Filter Based on One-dimensional Exponentially Graded Photonic Crystals
SN - 978-989-758-093-2
AU - Singh B.
AU - Pandey P.
PY - 2015
SP - 22
EP - 33
DO - 10.5220/0005333600220033