Proceedings of the 8th International conference on Research in Engineering, Science and Technology
Design of photonic crystal microcavity side-coupler to a waveguide based pressure sensor
Chayma Mosbah, Ahlem Benmerkhi, Mohamed Bouchemat, and Touraya Bouchemat
A novel design of two-dimensional photonic crystal pressure sensor based on microcavity coupled to waveguide is proposed. This sensor consists of photonic crystal microcavity side-coupler to a waveguide. The complex of microcavity and waveguide are formed by removing one hole, and eliminating the central row of holes, respectively. The radius of the holes localized in next alternating holes along the waveguide is changed, in order to enhance the quality factor and sensitivity. Then we applied the different pressures from 1 to 6 GPa by 1 GPa increment at each step. By using finite difference time domain method method, the simulation results demonstrate that when the pressure change the resonant wavelength shifts, the transmission efficiency is varied and quality factor increase.
Keywords: Photonic crystal, microcavity, waveguide, pressure sensor, sensitivity.