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Smartphone-Readable Optical-Fiber Quasi-Distributed Phosphorescent Temperature Sensor.
- Source :
- Photonics; Aug2024, Vol. 11 Issue 8, p694, 17p
- Publication Year :
- 2024
-
Abstract
- In this paper we present the principle of operation, fabrication and performance of a phosphorescent optical-fiber quasi-distributed sensor with contactless smartphone interrogation. An array of short strong corrugated long-period gratings (C-LPG) is used as a platform to spatially locate and to excite the phosphors whose time responses are temperature-dependent. The C-LPG array was fabricated using a pulsed CO<subscript>2</subscript> laser. The quasi-distributed sensing array is excited by a UV LED and the normalized differential rise/decay time response measured by a smartphone is used as a measure of the temperature. The sensing spots have a volume smaller than 0.5 μL, can be separated by several millimeters to several meters and the interrogation can be simultaneous or in a sequence. The response and the sensitivity to temperature have been measured. The sensing array has been shown to measure abrupt and gradual temperature changes in space as well as time-dependent processes in the 0 °C to 100 °C range and with a measurement time of 1 s. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 23046732
- Volume :
- 11
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Photonics
- Publication Type :
- Academic Journal
- Accession number :
- 179378814
- Full Text :
- https://doi.org/10.3390/photonics11080694