Optical Fiber High-Temperature Sensors

Anbo Wang, Yizheng Zhu and Gary Pickrell

Optical fiber sensors allow researchers and engineers to make accurate, reliable measurements under high-temperature conditions.


figureInset: Viewed from the end, a fiber tip sensor reveals its 2 mm thick sensing diaphragm with a diameter of 125 mm.

Pressure and temperature are two of the most common quantities that need to be measured for a wide range of scientific and industrial applications. Many of these applications involve high temperatures, which often impose a great challenge for researchers and engineers. For pressure measurement, sensors with an electric output are usually fabricated using silicon. However, their maximum operating temperature is generally limited to below or around 500° C by the intrinsic property of the semiconductor.

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