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https://hdl.handle.net/10356/88902| Title: | Optical fiber Fabry-Perot interferometer with pH sensitive hydrogel film for hazardous gases sensing | Authors: | Zheng, Yangzi Chen, Li Han Chan, Chi Chiu Dong, Xinyong Yang, Jingyi Tou, Zhi Qiang So, Ping Lam |
Keywords: | Optical Fiber Polyvinyl Alcohol DRNTU::Engineering::Chemical engineering |
Issue Date: | 2015 | Source: | Zheng, Y., Chen, L. H., Chan, C. C., Dong, X., Yang, J., Tou, Z. Q., & So, P. L. (2015). Optical fiber Fabry-Perot interferometer with pH sensitive hydrogel film for hazardous gases sensing. Proceedings of SPIE - 24th International Conference on Optical Fibre Sensors, 9634, 963467-. doi:10.1117/12.2194772 | Conference: | Proceedings of SPIE - 24th International Conference on Optical Fibre Sensors | Abstract: | An optical fiber Fabry-Perot interferometer (FPI) coated with polyvinyl alcohol/poly-acrylic acid (PVA/PAA) hydrogel film for toxic gases measurement has been developed. Splicing a short section of hollow core fiber between two single mode fibers forms the FPI. Dip-coated pH-sensitive PVA/PAA hydrogel film on the fiber end performs as a receptor for binding of volatile acids or ammonia, which makes the sensing film swelling or shrinking and results in the dip wavelength shift of the FPI. By demodulating the evolution of reflection spectrum for various concentrations of volatile acids, a sensitivity of 20.8 nm/ppm is achieved with uniform linearity. | URI: | https://hdl.handle.net/10356/88902 http://hdl.handle.net/10220/47001 |
DOI: | 10.1117/12.2194772 | Schools: | School of Chemical and Biomedical Engineering School of Electrical and Electronic Engineering |
Research Centres: | Energy Research Institute @ NTU (ERI@N) | Rights: | © 2015 Society of Photo-optical Instrumentation Engineers (SPIE). This paper was published in Proceedings of SPIE - 24th International Conference on Optical Fibre Sensors and is made available as an electronic reprint (preprint) with permission of Society of Photo-optical Instrumentation Engineers (SPIE). The published version is available at: [http://dx.doi.org/10.1117/12.2194772]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
| Appears in Collections: | SCBE Conference Papers |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Optical fiber Fabry-Perot interferometer with pH sensitive hydrogel film for hazardous gases sensing.pdf | 828.22 kB | Adobe PDF |  View/Open |
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