Fiber-optic carbon dioxide sensor utilizing sensitive film containing indicator dye

Yasuhiko Arai

doi:10.1117/12.2302220

9 November 2000 Fiber-optic carbon dioxide sensor utilizing sensitive film containing indicator dye

Yasuhiko Arai

Proceedings Volume 4185, Fourteenth International Conference on Optical Fiber Sensors; 418525 (2000) https://doi.org/10.1117/12.2302220
Event: Fourteenth International Conference on Optical Fiber Sensors, 2000, Venice, Italy

Abstract

New fiber-optic carbon dioxide sensors utilizing a sensitive film containing an indicator dye on a polymer clad optical fiber (PCF) are demonstrated. The sensitive film is a SiO₂ gel film including an indicator dye of thymol blue or phenolphthalein, which is dip-coated by a sol-gel method. The attenuation of this sensor changes at the wavelength range of 500 to 700nm detecting CO₂ gas.

Citation Download Citation

Yasuhiko Arai "Fiber-optic carbon dioxide sensor utilizing sensitive film containing indicator dye", Proc. SPIE 4185, Fourteenth International Conference on Optical Fiber Sensors, 418525 (9 November 2000); https://doi.org/10.1117/12.2302220

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