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The proposed work presents the design of a photonic crystal structure based on silicon with a square lattice arrangement. It probes the effect of pressure variation on the photonic bandgap and midgap wavelength of the structure. The photonic crystal structure shows a bandgap for the TM mode. The variation in the refractive index of silicon with pressure is utilized to study the bandgap characteristics of the structure with a change in applied pressure. It is observed that the midgap wavelength varies linearly with variations in pressure. This linear variation indicates the application of the proposed structure as a pressure sensor.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Varnam Sherawat, Renuka Bokolia, Ravindra Kumar Sinha, "Tunable pressure sensor based on two-dimensional silicon photonic crystal," Proc. SPIE 12682, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVII, 126820E (5 October 2023); https://doi.org/10.1117/12.2677559