Design of High Sensitive Temperature Sensor Based on Two-Dimensional Photonic Crystal

In this effort, a two-dimensional photonic crystal ring resonator (2DPCRR) is simulated. This device is developed for temperature detection in harsh environmental conditions for temperatures ranging from 0 °C to 360 °C with high sensitivity. The sensor based on 2DPCRR hexagonal array of silicon (Si) rods surrounded by air. The detection principle based on the variation of the refractive index of the Si due to a change in temperature which changes the position of the transmission peaks. A shift is created that will be used to calculate the sensitivity. The OptiFDTD algorithm was used to simulate the transmission of light for different temperatures. The photonic band gap (PBG) studied using the plane wave expansion method (PWE). The results are promising because the simulated sensor has a high sensitivity (92.3 pm/°C) compared to the literature for an ultra-compact size, weight and energy consumption which is suitable for nanotechnology.