Abstract

In extreme environments such as abysmal sea and deep space, the characteristics of low-temperature, vacuum, electromagnetic interference will significantly affect the performance of measuring instruments. With merits of anti-electromagnetic interference, corrosion resistance, compact size and so on, optical fiber sensing systems can accurately measure the pressure, the temperature, the strain and the acoustic vibration in their working environments. This article reviews the measurement methods and the characteristics of optical fiber multi-parameter sensing, and summarizes the technologies and the instrumentation of the fiber mechanical and thermal multi-parameter measurement instrument.

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