Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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UV Sensor using Evanescent Field Coupling of Prism and Fiber-to-Planar Waveguide Coupler

프리즘과 광섬유-평면도파로의 소산장 결합을 이용한 자외선 센서

  • Cho, Kang-Min (Department of Sensor Engineering, Kyungpook National University) ;
  • Yun, Jung-Hyun (Department of Sensor Engineering, Kyungpook National University) ;
  • Kim, Eung-Soo (Div. Digital Information Engineering, Pusan University of Foreign Studies) ;
  • Lee, Seung-Ha (School Electronic and Electrical Engineering, Kyungpook National University) ;
  • Kang, Shin-Won (School Electronic and Electrical Engineering, Kyungpook National University)
  • 조강민 (경북대학교 센서공학과) ;
  • 윤정현 (경북대학교 센서공학과) ;
  • 김응수 (부산외국어대학교 디지털정보공학부) ;
  • 이승하 (경북대학교 전자전기공학부) ;
  • 강신원 (경북대학교 전자전기공학부)
  • Published : 2004.09.30
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Abstract

A novel UV sensor was manufactured and characterized using the evanescentfield coupling between fiber-planar waveguide (PWG) coupler and prism. A spiroxazine dye was chosen as planar waveguide because its photochromic isomerization induced by UV irradiation. A novel UV sensor was proposed to measure the variation of refractive index and absorption coefficient simultaneously. The wavelength responses of these sensors by UV exposure times were measured 0.48 nm/sec, 0.757 nm/sec, and ATR output power variations were measured $-0.424{\mu}W$/sec and $-0.62{\mu}W$/sec when UV exposure power were 3 mW and 5 mW, respectively.

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References

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