Design and Study of a Nanocavity-based One-dimensional Photonic Crystal for Potential Applications in Refractive Index Sensing

DOI: https://doi.org/10.14500/aro.11298
Keywords: Distributed Bragg Reflectors, Photonic crystal, Nanocavity, Refractive index, Sensor

Abstract

Refractive index (RI) can be used to identify a particular substance and determine its purity and concentration. The RI of glucose solution with various concentrations can be determined using a distributed Bragg reflective (DBR) device containing a nanocavity. The optical property of the reflection spectrum produced by DBR is sensitive to the variation of the refractive index. In this study, a DBR with a cavity width of 220 nm, located in the middle of the device, is designed and used to sense the variation in the refractive index of glucose at different concentrations. The proposed design showed a sharp dip pattern within the reflection spectrum. The wavelength of the absorption peak was found to be sensitive to trivial variations in the refractive index of glucose solution. Results showed that the variation in the refractive index of glucose within the order of Δn = 0.02 has led to a noticeable shift in the absorption spectrum by Δλ = 2.6 nm. Furthermore, the sensitivity of the proposed device was found to be 130 nm/RIU which is considered high compared with those reported in the literature. Hence, the proposed structure can be a promising optical device for chemical ultrasensing applications.

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Author Biographies

Khalid N. Sediq, Department of Physics, Faculty of Science and Health, Koya University, Koya KOY45, Kurdistan Region – F.R. Iraq

Khalid N. Sediq is a lecturer at the Department of Physics, Faculty of Science, Koya University. He got a B.Sc. degree in Physics, an M.Sc. degree in Physics, and a PhD degree in Photonic crystal Nano technology. His research interests are in Photonics, Plasmonic and Nano technology.

Fahmi F. Muhammadsharif, Department of Physics, Faculty of Science and Health, Koya University, Danielle Mitterrand Boulevard, Koya KOY45, Kurdistan Region – F.R. Iraq

Fahmi F. Muhammad Sharif is an Assistant Professor at the Department of Physics, Faculty of Science, Koya University. He got a B.Sc. degree in Physics, an M.Sc. degree in Physics, and a PhD degree in Solar energy. His research interests are in Photovoltaics/Solar Cells, Organic/Hybrid Electronics and Simulation/Modelling.

Simko O. Ramadan, Department of Physics, Faculty of Science and Health, Koya University, Danielle Mitterrand Boulevard, Koya KOY45, Kurdistan Region – F.R. Iraq

Simko O. Ramadan is a lecturer at the Department of Physics, Faculty of Science, Koya University. He got a B.Sc. degree in Physics, an M.Sc. degree in Physics, and a PhD degree in Material science. His research interests are in Solar Energy, Nanoparticles, Polymer Composite. Materials and Nuclear Physics.

Shalaw Z. Sedeeq , Department of Physics, Faculty of Science and Health, Koya University, Danielle Mitterrand Boulevard, Koya KOY45, Kurdistan Region – F.R. Iraq

Shalaw Z. Sedeeq is an assistant lecturer at the Department of Physics, Faculty of Science, Koya University. He got a B.Sc. degree in Physics, an M.Sc. degree in Physics. His research interests are in Radiation detection, Measurement of naturally occurring radioactive materials NORMs, and Gamma-ray spectroscopy.

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Published
2023-10-09
How to Cite
Sediq, K. N., Muhammadsharif, F. F., Ramadan, S. O. and Sedeeq , S. Z. (2023) “Design and Study of a Nanocavity-based One-dimensional Photonic Crystal for Potential Applications in Refractive Index Sensing”, ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY, 11(2), pp. 95-98. doi: 10.14500/aro.11298.
Issue
Vol. 11 No. 2 (2023): Issue Twenty One
Section
Articles

Copyright (c) 2023 Khalid N. Sediq, Fahmi F. Muhammadsharif, Simko O Ramadan, Shalaw Z. Sedeeq

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