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Spectroscopic study on the development of fiber-optic pH sensor

광섬유 pH 센서 개발을 위한 분광학적 연구

  • Yoo, Wook-Jae (School of Biomedical Engineering, College of Biomedical & Health Science, Research Institute of Biomedical Engineering, Konkuk University) ;
  • Heo, Ji-Yeon (School of Biomedical Engineering, College of Biomedical & Health Science, Research Institute of Biomedical Engineering, Konkuk University) ;
  • Cho, Dong-Hyun (School of Biomedical Engineering, College of Biomedical & Health Science, Research Institute of Biomedical Engineering, Konkuk University) ;
  • Jang, Kyoung-Won (School of Biomedical Engineering, College of Biomedical & Health Science, Research Institute of Biomedical Engineering, Konkuk University) ;
  • Seo, Jeong-Ki (School of Biomedical Engineering, College of Biomedical & Health Science, Research Institute of Biomedical Engineering, Konkuk University) ;
  • Lee, Bong-Soo (School of Biomedical Engineering, College of Biomedical & Health Science, Research Institute of Biomedical Engineering, Konkuk University) ;
  • Cho, Young-Ho (Department of Radiological Science, College of Health & Medical Science, Catholic University of Daegu) ;
  • Moon, Joo-Hyun (Department of Energy & Environment System Engineering, College of Energy & Environment, Dongguk University) ;
  • Park, Byung-Gi (Department of Energy & Environment Engineering, College of Engineering, Soonchunhyang University)
  • 유욱재 (건국대학교 의료생명대학 의학공학부, 의공학 실용기술 연구소) ;
  • 허지연 (건국대학교 의료생명대학 의학공학부, 의공학 실용기술 연구소) ;
  • 조동현 (건국대학교 의료생명대학 의학공학부, 의공학 실용기술 연구소) ;
  • 장경원 (건국대학교 의료생명대학 의학공학부, 의공학 실용기술 연구소) ;
  • 서정기 (건국대학교 의료생명대학 의학공학부, 의공학 실용기술 연구소) ;
  • 이봉수 (건국대학교 의료생명대학 의학공학부, 의공학 실용기술 연구소) ;
  • 조영호 (대구가톨릭대학교 보건과학대학 방사선학과) ;
  • 문주현 (동국대학교 에너지환경대학 에너지환경시스템공학과) ;
  • 박병기 (순천향대학교 공과대학 에너지환경공학과)
  • Published : 2009.09.30

Abstract

In this study, we have fabricated a fiber-optic pH sensor which is composed of a light source, plastic optical fibers and a spectrometer. As an indicator, a phenol red is used, and a pH liquid solution is prepared by mixing of phenol red and various kinds of pH buffer solutions in these experiments. The emitting light from a light source is guided by plastic optical fibers to the pH liquid solution, and the optical characteristic of a light is changed in the pH liquid solution according to its color change. Therefore, we have measured the intensities and wavelength shifts of the modulated lights, which are changed due to the color variations of phenol red at different pH values, by using of a spectrometer for spectral analysis. Also, the relationships between the pH values of liquid solutions and the optical properties of modulated light according to the change of color of phenol red are obtained.

Keywords

References

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