NDLI: An optical fibre sensor for germicidal microwave plasma powered UV lamps output with potential for on-line temperature control

Content Provider	IEEE Xplore Digital Library
Author	Fitzpatrick, C. Lewis, E. Al-Shamma'a, A. Lucas, J.
Copyright Year	2002
Description	Author affiliation: Dept. of Electron. & Comput. Eng., Limerick Univ., Ireland (Fitzpatrick, C.; Lewis, E.)
Abstract	A novel optical fibre based system has been developed which is capable of measuring the light output intensity of a high power microwave powered UV light source (MPUVL). Calibration of the sensor has shown excellent agreement with conventional semiconductor UV sensors. There are several industrial applications for this type of microwave plasma driven light source especially in the drinking water industry where it is necessary to kill potentially life-threatening bacteria. The results of this investigation have demonstrated the suitability of fibre sensors for monitoring and performance optimisation. of the MPUVL. The technique is especially suited for light source temperature control as the phosphor decay times are less than a second (typically 3 ins). This is particularly important where the wavelength needs to be determined for operation in the germicidal region (254 nm) or the ozone-generating region (185 nm). The results have demonstrated a maximum departure from linearity of 2% in when measuring the light output intensity from the MPUVL in the power operating region (50 to 200 W). Apart from its low cost compared to conventional UV spectroscopic techniques, the fibre sensor of this investigation has the added advantage of being able to operate in a hostile electromagnetic environment of high power microwave electric and magnetic fields.
Starting Page	455
Ending Page	458
File Size	435692
Page Count	4
File Format	PDF
ISBN	0780372891
DOI	10.1109/OFS.2002.1000690
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-05-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical fiber sensors Plasma temperature Lamps Temperature control Plasma measurements Light sources Plasma sources Power measurement Microwave measurements Beverage industry
Content Type	Text
Resource Type	Article

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