2D Photonic Crystal Cantilever Resonator Pressure Sensor

In this work the pressure sensor based two dimensional photonic crystal is proposed and designed with the high quality factor. The sensor is formed by coupling of two photonic crystal waveguides and one nanocavity. A rectangular structure with the triangular lattice of air holes in slab type photonic crystal is considered and the point defect is placed at the centre. For the radius of the holes, optimization is carried out for high Q factor. For the radius of a hole at 165 nm, Q factor obtained is 5355.93.The photonic crystal structure with radius of hole as 165 nm is considered for pressure sensor application.The Refractive index values of the material are calculated for different pressures. Normalized transmission with wavelength shift for different pressure is observed. Through simulation it is noticed that the resonant wavelength of the sensor is shifted linearly towards highest region while increasing the applied pressure. This simulation and analysis is done by software called FDTD Lumerical solution. And the best quality factor is achieved.