Unlike traditional electrical temperature sensors (e., thermocouples, RTDs), fiber optic sensors offer significant advantages such as immunity to electromagnetic interference (EMI), high-temperature resistance, compact size, and distributed measurement capability. High-temperature measurements above 1000 °C are critical in harsh environments such as aerospace, metallurgy, fossil fuel, and power production. They can be based on different operation principles as explained in the following. However. Fiber optic temperature sensors offer superior performance compared to these techniques, thanks to their numerous benefits., generators, motors, transformers), nuclear power. Fiber optic temperature sensors are immune to the many environmental effects that compromise other measurement technologies, can be embedded and installed in locations traditional temperature sensors cannot and deliver an unprecedented level of spatial detail and data without sacrificing precision. The paper deals with the overview of fiber optic methods suitable for temperature measurement and monitoring.
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