Recent Developments in Polymer Optical Fibre Strain Sensors: A Short Review
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Date
2021
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Publisher
Springer
Abstract
Polymer optical fiber (POF) strain sensors have attracted increasing attention owing to the unique features
of polymer over silica such as lower Young’s modulus, larger elastic strain limit, higher fracture toughness, bio compatibility, and lower production cost. Several POF strain sensors have been developed in recent years for applications in various technological fields, including structural health monitoring in civil construction and
aerospace industries, biomedicine, and robotics. The prin ciples of operation, prospects, and challenges of the POF strain sensors are discussed in this article under five broad categories: POF fiber Bragg grating sensors, intensity based POF sensors, multimodal interference- based sensors, Brillouin-frequency-based sensors, and Fabry–Perot cavity sensor. This review aims to highlight areas where further research is required for improving the performance and operating range of POF strain sensors.
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Keywords
Polymer optical fiber, Polymer optical fiber strain sensors, Strain sensitivity, Viscoelasticity, Structural health monitoring