Spark Discharge Detection Using Photoluminescent Optical Fibre Ã¢â‚¬â€? Application In Microwave Waveguides

A. J. Harris; L. J. Auchterlonie; Z. A. Haron; M. Jackson

doi:10.1117/12.961004

29 October 1989 Spark Discharge Detection Using Photoluminescent Optical Fibre - Application In Microwave Waveguides

A. J. Harris, L. J. Auchterlonie, Z. A. Haron, M. Jackson

Proceedings Volume 1120, Fibre Optics '89; (1989) https://doi.org/10.1117/12.961004
Event: Sira/Fibre Optics '89, 1989, London, United Kingdom

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.

Citation Download Citation

A. J. Harris, L. J. Auchterlonie, Z. A. Haron, and M. Jackson "Spark Discharge Detection Using Photoluminescent Optical Fibre - Application In Microwave Waveguides", Proc. SPIE 1120, Fibre Optics '89, (29 October 1989); https://doi.org/10.1117/12.961004

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