Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Mechanically Induced Long Period Fiber Grating Array Device and Sensor Application

기계적으로 유도되는 장주기 광섬유 격자 배열 소자 및 센서 응용

  • Lee, Nam-Kwon (Kyungpook National University, School of Electrical Engineering and Computer Science) ;
  • Song, Jae-Won (Kyungpook National University, School of Electrical Engineering and Computer Science) ;
  • Park, Jea-Hee (Keimyung University, Department of Electronics Engineering)
  • 이남권 (경북대학교 전자전기컴퓨터학부) ;
  • 송재원 (경북대학교 전자전기컴퓨터학부) ;
  • 박재희 (계명대학교 전자공학과)
  • Published : 2007.04.25
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Abstract

A mechanically induced long-period fiber grating array was fabricated and its transmission characteristics were measured. The grating away consisted of a rubber cover and a 45 cm metal bar with 10 grating groups. Each grating group was composed of 60 gratings. The period of the grating of the grating groups was increased by $10{\mu}m$ increments from $690{\mu}m$ to $780{\mu}m$. The long period fiber grating was induced when the pressure was applied on the long period grating array and the resonant wavelength depended on the position of applied pressure. The experimental results shows that this long period fiber grating away can be used as a various band rejection filter or a fiber optic sensor.

기계적으로 유도되는 장주기 광섬유 격자 배열 소자를 제작하고 격자 배열소자의 광 투과 특성을 측정하였다. 격자 배열 소자는 표면에 $690{\mu}m$부터 $780{\mu}m$ 주기까지 $10{\mu}m$씩 주기가 증가되는 격자들이 만들어져 있는 45 cm 길이의 금속 막대와 고무덮개로 구성되어 있다. 외부 압력이 격자 배열 소자에 인가되면 압력이 인가된 지점에만 장주기 광섬유 격자가 형성되고 장주기 광섬유 격자의 공진 파장은 인가된 지점에 의존한다. 그리고 제작된 장주기 광섬유 격자 배열 소자의 특성측정 결과가 다양한 투과 특성을 갖는 광섬유 대역 제거 필터, 혹은 압력센서로 사용 가능함을 보여주고 있다.

Keywords

References

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