Design of Intensity Modulated Fiber-Optic Temperature Sensor Based on TracePro

Compare with traditional way of numerical simulation by establishing the mathematical model through geometry optic, we design a tracepro model to analyze the sensing process of reflective intensity-modulated fiber optic sensor base on ray tracing. We use bimetal as sensing element. This type of sensor has advantages over other fiber optic sensor, including simple structure, flexible design, reliable perform, low cost etc. the linearity and repetition of this sensor were verified during the experiment. The result shows that the maximum error rate of the propone temperature sensor is 3.6%, which appears good accuracy and reproducibility. The measurement system is more sensitive to the vibration test environments, if we can solve this problem, the measurement error is expected to be further improved.