This paper presents the results of a study of the characteristics of a fiber-optic sparking sensor based on the spectral conversion of the spark radiation into the long-wavelength region of the spectrum. It is shown that the sensitivity of the sensor can be increased by more than a factor of 200 when a fiber with a polymer coating containing rhodamine 6G and a cylindrical lens is used in the sensor. The proposed sensor possesses a narrow directional pattern, and this makes it possible to determine the spatial position of the signal source (an electric discharge).
© 2011 OSA
Original Manuscript: February 14, 2011
Published: November 30, 2011
D. S. Arafonova and A. I. Sidorov, "Fiber-optic indicator of the appearance of a spark and an arc with spectral conversion of the radiation to be detected," J. Opt. Technol. 78, 735-738 (2011)