Noncontact liquid refractometer using a fiber bundle

광섬유 다발을 이용한 비접촉식 용액굴절계

  • 김덕기 (호남대학교 전자광공학부) ;
  • 한부전 (호남대학교 전자광공학부) ;
  • 문남일 (호남대학교 전자광공학부) ;
  • 양병철 (호남대학교 전자광공학부) ;
  • 조규정 (호남대학교 전자광공학부) ;
  • 강지훈 (호남대학교 전자광공학부) ;
  • 김인수 (호남대학교 전자광공학부) ;
  • 김광택 (호남대학교 전자광공학부)
  • Published : 2009.02.12

Abstract

We have proposed and demonstrated noncontact refractometer incorporating a fiber bundle. The fiber bundle is composed of a TEC(thermally expended core) fiber and hundreds multimode fibers. The fiber is designed in such a way that the detected reflected optical power from a liquid is constant against the distance between fiber bundle and liquid surface. Low differactive characteristic of TEC fiber make it possible to increase the available distance between the fiber bundle and liquid surface, The obtained sensitivity, optical intensity variation by change of refractive index of liquid is 0.4.

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