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Proceedings Paper

Two-point temperature sensor using an optical fiber-switching scheme
Author(s): Vito C. Fernicola; Luigi Crovini
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Paper Abstract

A two-point optical fiber temperature sensor which makes use of a multimode 1 X 2 fiber switch has been developed. It exploits the fluorescence decay of a Nd-doped glass as temperature sensing mechanism. The fluorescence responses from the Nd:glass probes are alternatively routed, via the optical switch, to a DSP which converts the fluorescence decay time into a modulation frequency proportional to it. The system, which demonstrates the feasibility of multi-point temperature sensing with a decay time-based approach, could be easily expanded to multiple- sensor configuration by means of a binary-tree scheme. The probes were tested in the temperature range 0 degree(s)C to 250 degree(s)C. The results of the tests and the calibration of one probe are reported.

Paper Details

Date Published: 15 September 1995
PDF: 5 pages
Proc. SPIE 2507, Distributed and Multiplexed Fiber Optic Sensors V, (15 September 1995); doi: 10.1117/12.219614
Show Author Affiliations
Vito C. Fernicola, Istituto di Metrologia "G. Colonnetti" (Italy)
Luigi Crovini, Istituto di Metrologia "G. Colonnetti" (Italy)


Published in SPIE Proceedings Vol. 2507:
Distributed and Multiplexed Fiber Optic Sensors V
John P. Dakin; Alan D. Kersey, Editor(s)

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