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Proceedings Paper

Spark Discharge Detection Using Photoluminescent Optical Fibre � Application In Microwave Waveguides
Author(s): A. J. Harris; L. J. Auchterlonie; Z. A. Haron; M. Jackson
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Paper Abstract

An optical fibre with a core which photoluminesces is assessed as a means of detecting light emitted from a spark discharge in air. The spectral properties of both the fibre and the spark show significant overlap and the detection of sparks is demonstrated. At the peak excitation wavelength of the fibre, i.e. 400 nm, the photoluminescent response of the fibre is 7x10-7 and the output from the fibre increases linearly with incident intensity. The response time of the fibre, when excited by a spark, is nominally 3 ms which is limited by the lifetime of the excited state producing the luminescence. The application of the fibre to detect breakdown in air filled microwave waveguides carrying high powers is discussed.

Paper Details

Date Published: 29 October 1989
PDF: 4 pages
Proc. SPIE 1120, Fibre Optics '89, (29 October 1989); doi: 10.1117/12.961004
Show Author Affiliations
A. J. Harris, University of Newcastle upon Tyne (United Kingdom)
L. J. Auchterlonie, University of Newcastle upon Tyne (United Kingdom)
Z. A. Haron, University of Newcastle upon Tyne (United Kingdom)
M. Jackson, University of Newcastle upon Tyne (United Kingdom)

Published in SPIE Proceedings Vol. 1120:
Fibre Optics '89
Peter McGeehin, Editor(s)

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