Design of Dual Core Photonic Crystal Fiber (DC-PCF) Based Temperature Sensor with Rectangular Lattice Structure

In this paper, a temperature sensor which is based on dual-core photonic crystal fiber (DC-PCF) with rectangular air-hole lattice structure is proposed. The two fiber cores of the PCF are separated by single air hole and the background material is taken as silica whose refractive index is 1.45. The temperature sensitivity can be achieved 0.905 nm/°C for the sensing range from 0 to 1000°C.