期刊
SENSORS
卷 17, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/s17122773
关键词
cryogenic temperature; thermometry; interferometric sensor; optical fiber sensor; random distributed feedback fiber lasers; optical backscatter reflectometer
资金
- Spanish Comision Interministerial de Ciencia y Tecnologia [TEC2013-47264-C2-2-R, TEC2016-76021-C2-1-R]
- Innocampus
- Cost action [MP1401]
- FEDER funds
- Institute of Smart Cities
In this work, the performance of five different fiber optic sensors at cryogenic temperatures has been analyzed. A photonic crystal fiber Fabry-Perot interferometer, two Sagnac interferometers, a commercial fiber Bragg grating (FBG), and a pi-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. Additionally, the results have been compared with the given by a commercial optical backscatter reflectometer that allowed for distributed temperature measurements of a single mode fiber.
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