Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Volatile organic compounds gas sensor using side polished optical fiber

측면 연마 광섬유를 이용한 휘발성 유기 화합물 가스센서

  • Yeom, Se-Hyuk (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Heng, Yuan (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Lim, Jun-Woo (Kyungnam College University of Information and Technology) ;
  • Kim, Hak-Rin (School of Electronics Engineering, College of IT Engineering, Kyungpook National University) ;
  • Kang, Shin-Won (School of Electronics Engineering, College of IT Engineering, Kyungpook National University)
  • 염세혁 (경북대학교 전자전기컴퓨터학부) ;
  • ;
  • 임준우 (경남정보대학 전자정보공학과) ;
  • 김학린 (경북대학교 IT대학 전자공학과) ;
  • 강신원 (경북대학교 IT대학 전자공학과)
  • Received : 2010.01.18
  • Accepted : 2010.10.06
  • Published : 2010.11.30
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Abstract

In this study, a novel gas sensor based on evanescent field coupling between single mode side polished fiber and solvatochromic dye dispersed polymer waveguide was demonstrated. We fabricated a side polished optical fiber device as a volatile organic compounds gas detector. Solvatochromic dye was coated on the top of the side polished optical fiber to take advantage of evanescent field coupling. The solvatochromism can be defined as the phenomenon whereby a compound changes color, either by a change in the absorption or emission spectra of molecule, when reacted in different VOCs. The device reacted to polarity gases like a hexane, butane, xylene etc. The resonance wavelength was shifted by the xylene concentration which range was 0.1 ppm ~ 100 ppm. Also, the response with the concentration was lineer and the detection limit was 0.1 ppb.

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References

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