TY - GEN
T1 - An optical fibre sensor for germicidal microwave plasma powered UV lamps output with potential for on-line temperature control
AU - Fitzpatrick, C.
AU - Lewis, E.
AU - Al-Shamma'a, A.
AU - Lucas, J.
N1 - Publisher Copyright:
© 2002 IEEE.
PY - 2002
Y1 - 2002
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0042426136&partnerID=8YFLogxK
U2 - 10.1109/OFS.2002.1000690
DO - 10.1109/OFS.2002.1000690
M3 - Conference contribution
AN - SCOPUS:0042426136
T3 - 2002 15th Optical Fiber Sensors Conference Technical Digest, OFS 2002
SP - 455
EP - 458
BT - 2002 15th Optical Fiber Sensors Conference Technical Digest, OFS 2002
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 15th Optical Fiber Sensors Conference Technical Digest, OFS 2002
Y2 - 6 May 2002 through 10 May 2002
ER -