Highly sensitive optical fiber oxygen sensor based on dye entrapped core-shell silica nanoparticles

Chen-Shane Chu; Yu-Lung Lo; Ti-Wen Sung

doi:10.1117/12.885125

17 May 2011 Highly sensitive optical fiber oxygen sensor based on dye entrapped core-shell silica nanoparticles

Chen-Shane Chu, Yu-Lung Lo, Ti-Wen Sung

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 775361 (2011) https://doi.org/10.1117/12.885125
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

This paper presents a highly-sensitive oxygen sensor that comprises an optical fiber coated at one end with platinum (II) meso-tetrakis (pentrafluorophenyl)porphine (PtTFPP) and PtTFPP entrapped core-shell silica nanaparticles embedded in an n-octyltriethoxysilane (Octyl-triEOS)/tetraethylorthosilane (TEOS) composite xerogel. The sensitivity of the optical oxygen sensor is quantified in terms of the ratio I₀/I₁₀₀, where I₀ and I₁₀₀ represent the detected fluorescence intensities in pure nitrogen and pure oxygen environments, respectively. The experimental results reveal that the oxygen sensor has a sensitivity of 166. The response time was 1.3 s when switching from pure nitrogen to pure oxygen, and 18.6 s when switching in the reverse direction.

Citation Download Citation

Chen-Shane Chu, Yu-Lung Lo, and Ti-Wen Sung "Highly sensitive optical fiber oxygen sensor based on dye entrapped core-shell silica nanoparticles", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775361 (17 May 2011); https://doi.org/10.1117/12.885125

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