Two-point temperature sensor using an optical fiber-switching scheme

Vito C. Fernicola; Luigi Crovini

doi:10.1117/12.219614

15 September 1995 Two-point temperature sensor using an optical fiber-switching scheme

Vito C. Fernicola, Luigi Crovini

Proceedings Volume 2507, Distributed and Multiplexed Fiber Optic Sensors V; (1995) https://doi.org/10.1117/12.219614
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany

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.

Citation Download Citation

Vito C. Fernicola and Luigi Crovini "Two-point temperature sensor using an optical fiber-switching scheme", Proc. SPIE 2507, Distributed and Multiplexed Fiber Optic Sensors V, (15 September 1995); https://doi.org/10.1117/12.219614

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KEYWORDS

Sensors

Luminescence

Optical fibers

Temperature sensors

Temperature metrology

Calibration

Optical switching

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