Novel design of wide temperature ranges sensor based on Tamm state in a pyroelectric photonic crystal with high sensitivity

Abstract

An ultra-high sensitive sensor over a wide range of temperatures based on the optical Tamm resonance and the pyroelectric effect is presented. The lithium niobate (LN) material is considered in a one-dimensional photonic crystal (1D-PC) for such purpose. The sensing process is based on the displacement of the optical Tamm plasmon (TP) resonance in the near-infrared (NIR) region. All parameters were optimized to produce the highest performance. The numerical results are validated by using the transfer matrix method (TMM). We obtained a sensitivity of 1.10 nm/K in a wide range of temperatures from 300 K to 700 K, which is higher than many reported 1D-PC temperature sensors . The high sensitivity is due to the pyroelectric effect of the LN material, which causes the refractive index to increase significantly with temperature changes. The proposed sensor design may be of great interest to optoelectronics and temperature sensor applications. • The current work presented an ultra-high sensitive sensor over a wide range of temperatures based on optical Tamm resonance. • A pyroelectric effect using the lithium niobate (LN) material is proposed in one-dimensional photonic crystal. • The average temperature sensitivity of the proposed sensor is about 1.10 nm/K in a wide range of temperatures from 300 K to 700 K. • This sensitivity is higher than all other conventional previously reported 1D-PC temperature sensors.