Negative curvature hollow core fiber sensor for the measurement of strain and temperature

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Date
2021
Volume
29
Issue
4
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Publisher
Washington, DC : Soc.
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Abstract

Three different types of strain and temperature sensors based on negative curvature hollow core fiber (NCHCF) are proposed. Each sensor is produced by splicing a small section of the NCHCF between two sections of single mode fiber. Different types of interferometers are obtained simply by changing the splicing conditions. The first sensor consists on a single Fabry-Perot interferometer (FPI). The remaining two configurations are attained with the same sensing structure, depending on its position in relation to the interrogation setup. Thus, a double FPI or a hybrid sensor, the latter being composed by an FPI and a Michelson interferometer, are formed. The inline sensors are of submillimeter size, thus enabling nearly punctual measurements.

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Keywords
Michelson interferometers, Single mode fibers, Hollow core fiber, In-line sensors, Negative curvature, Strain and temperature sensors, Submillimeters, Two section, Fabry-Perot interferometers
Citation
Ferreira, M. S., Bierlich, J., Kobelke, J., Pinto, J. L., & Wondraczek, K. (2021). Negative curvature hollow core fiber sensor for the measurement of strain and temperature. 29(4). https://doi.org//10.1364/OE.412532
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OSA Open Access Publishing Agreement