The core function of an optical fiber pressure sensor is to convert external mechanical pressure into measurable changes in the optical signals transmitted through the fiber. This process relies on the fiber's unique waveguide structure and the interaction between light and matter. These sensors have gained significant attention in recent years due to their high accuracy, reliability, and immunity to electromagnetic interference. Fiber Optic Pressure Sensors work on the. This paper conducts a systematic analysis of the sensing mechanisms in fiber-optic pressure sensors, with a particular focus on the performance optimization effects of fiber structures and materials, while elucidating their application characteristics in different sensing scenarios. Figure 1 depicts a simplified structure of a non-interferometric fiber optic pressure sensor.
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