큰 복굴절 특성을 가지는 광자결정 광섬유를 이용한 스트레인, 구부림 및 온도 특성
Highly-birefringent Photonic Crystal Fiber with Squeezed Lattice for Strain, Curvature and Temperature Sensing
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초록
큰 복굴절 값을 갖는 광자결정광섬유는 실리카 단일 물질로 구성되어 온도 민감성이 매우 낮다. 이를 이용하여 온도변화에영향을 받지 않는 스트레인 및 구부림 센서를 구현하였다. 이때, 스트레인 변화에 따른 민감도는 1.41 pm/με 이고, 구부림에 대한민감도는 타원코어 장축 방향과 단축 방향으로의 구부렸을 때 각각 0.93 nm/m-1, -1.6 nm/m-1 로 차이가 있었다.
Abstract
Highly-Birefringent Photonic Crystal Fiber (Hi-Bi PCF) is composed of a single material, silica, so that its temperature sensitivity is extremely low. Therefore, we propose afiber based Sagnac interferometer for measurement of strain and curvature independent of temperature variation. The sensitivities of strain and curvature (both axes) are measured to be 1.41 pm/με and 0.93nm/m-1(slow axis Y), -1.6 nm/m-1(fast axis X), respectively.
참고문헌 (12)
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