P2.3.3 VOC gas detection using solvatochromic dye coated side polished optical fiber
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P2.3 Sensors Based on Optical Techniques
- S. Yeom, B. Kang - Center for Functional Devices Fusion Platform, Kyungpook National University (Republic of Korea), K. Kim, H. Yuan - School of Electrical Engineering and Computer Science, Kyungpook National University (Republic of Korea), D. Kwon - Department of Electronic Engineering, Kyungil University, Gyeongsang (Republic of Korea), S. Kim - Department of Textile System Engineering, Kyungpook National Universit (Republic of Korea), S. Kang - School of Electronics Engineering, College of IT engineering, Kyungpook National University (Republic of Korea)
- 1454 - 1457
A high sensitive volatile organic compounds (VOCs) gas sensor using side-polished optical fiber was developed in this study. The surface of the side-polished optical fiber coupled with the coated solvatochromic dye which has charge-transfer (CT) characters. Dimethylamine, acetic acid, toluene, benzene, and ethanol 5-types of VOCs gases were detected in this study. The different polarities of the VOCs gases cause different CT and different effective refractive index changings of the sensing membrane, which can lead to the resonance wave length of the sidepolished optical fiber changed. According to the results, we found that the side-polished optical fiber sensor has good selectivity and high sensitivity properties.