Jure Javornik (Author), Denis Đonlagić (Author)

Abstract

This article presents a short-range fiber-optic quasi-distributed sensing device suitable for strain and temperature measurement. The sensing assembly consists of an fs laser inscribed reference mirror and a sensing array of equidistantly positioned mirrors. Utilization of the reference mirror and proper sensor geometry selection provides the possibility for a high-resolution spectral interrogation of the sensing array while relying on an ordinary, cost-effective distributed feedback (DFB) telecom laser diode. Beside the telecom DFB diode, the entire interrogation system includes only an additional detector, optical coupler, analog interface and a microcontroller. Measurement resolution better than 1 µε was demonstrated experimentally at a sampling rate exceeding 65 samples per second, while utilizing a sensing device with a typical length of 50 mm and spatial resolution of approximately 2 mm. To demonstrate the application potential of the proposed measuring device, a few different packages and sensor configurations were demonstrated and tested, including a system for tactile sensing applications and a short-range quasi-distributed temperature measurement probe.

Keywords

optična vlakna;optični senzorji;senzorji;optical fiber sensors;short-range quasi-distributed fiber-optic sensor;strain/temperature sensing device;cost-effective interrogation system;tactile sensing;phase subtraction;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FERI - Faculty of Electrical Engineering and Computer Science
Publisher: Elsevier Ltd.
UDC: 535
COBISS: 215688963 Link will open in a new window
ISSN: 1879-2545
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Downloads: 1
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Other data

Secondary language: Slovenian
Secondary keywords: optična vlakna;optični senzorji;senzorji;
Type (COBISS): Article
Pages: 12 str.
Volume: ǂVol. ǂ181
Issue: ǂPart ǂC [article no. [111919]
Chronology: Feb. 2025
DOI: 10.1016/j.optlastec.2024.111919
ID: 25832663