Temperature Sensor Based on Ge-Doped Microstructured Fibers

The fundamental mode cutoff properties of Ge-doped microstructured fibers, filled with a liquid, permit the implementation of wavelength- and amplitude-encoded temperature sensors with an ultra-high sensitivity. The cutoff wavelength changes with temperature, and the thermo-optic coefficient of the...

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Bibliographic Details
Published in:Journal of sensors 2009, Vol.2009 (2009), p.1-5
Main Authors: Torres-Peiró, Salvador, Díez, Antonio, Cruz, José Luis, Andrés, Miguel Vicente
Format: Article
Language:English
Subjects:
Experiments
Light emitting diodes
Questioning
Sensors
Temperature
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Summary:The fundamental mode cutoff properties of Ge-doped microstructured fibers, filled with a liquid, permit the implementation of wavelength- and amplitude-encoded temperature sensors with an ultra-high sensitivity. The cutoff wavelength changes with temperature, and the thermo-optic coefficient of the liquid determines the sensitivity of the sensor. Sensitivity as high as 25 nm/∘C is reported. In addition, simple amplitude interrogation techniques can be implemented using the same sensor heads.
ISSN:1687-725X
1687-7268
DOI:10.1155/2009/417540