A New Plastic Optical Fiber Sensor for Oxygen Based on Fluorescence Enhancement |
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Authors: | Gargi Vishnoi Masayuki Morisawa Shinzo Muto |
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Institution: | (1) Department of Electrical Engineering and Computer Science, Faculty of Engineering, Yamanashi University, 4-3-11, Takeda, Kofu 400, Japan |
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Abstract: | A new method for the detection of low oxygen concentration is proposed here. The system is based on the principle of enhancement of fluorescence yield of tetraphenylporphine (TPP) dye at λ=656 nm when excited by He-Cd laser at λ =441 nm in the presence of oxygen. The sensor head was fabricated by cladding the ARTON fiber core with the poly-4-methy1-1-pentene polymer matrix doped with TPP. The experimental results obtained indicate a good enhancement in the fluorescence when the sensor head is exposed to oxygen. The response was found to be linear and stable in the range of (100 ppm-1%) with the resolution of 0.01%. The sensor response was characterized by studying its response for change in temperature and is discussed below. |
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Keywords: | oxygen sensor fluorescence enhancement plastic optical fiber ARTON fiber PMP (poly-4-meth- y1-1-pentene) TPP (tetraphenylporphine) |
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