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Study of Optical Fiber Sensors for Cryogenic Temperature Measurements.
Sensors (Basel)
November 2017
Institute of Smart Cities and Department of Electrical and Electronic Engineering, Campus de Arrosadia S/N, Universidad Pública de Navarra, Pamplona E-31006, Spain.
In this work, the performance of five different fiber optic sensors at cryogenic temperatures has been analyzed. A photonic crystal fiber Fabry-Pérot interferometer, two Sagnac interferometers, a commercial fiber Bragg grating (FBG), and a π-phase shifted fiber Bragg grating interrogated in a random distributed feedback fiber laser have been studied. Their sensitivities and resolutions as sensors for cryogenic temperatures have been compared regarding their advantages and disadvantages.
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