物理学报Issue(19)：253-259,7.DOI:10.7498/aps.62.194209
基于侧漏型光子晶体光纤高灵敏度宽线性范围弯曲传感器的研究
Curvature sensor based on side-leakage photonic crystal fiber with high sensitivity and broad linear measurement range
摘要
Abstract
Based on Sagnac interferometer by incorporating a segment of side-leakage photonic crystal fiber (SLPCF), a curvature sensor with high sensitivity and broad linear measurement range was proposed and demonstrated experimentally. Experimental results show that high sensitivity to curvature can be achieved by measuring group modal birefringence and wavelength shift of transmission dip when the linear side-leakage defect is in the same direction as the bending, but the linear measuring range is not large enough to cover the small curvature. When the linear side-leakage defect is in the vertical direction to the bending, the sensitivity can be as high as 10.798 nm·m−1 and the linear measurement range as wide as 0-5.03 m−1 by measuring wavelength shift of transmission. Combined with the introduction of the measurement matrix, the measurement of temperature and curvature can be realized simultaneously, which would offer a way to eliminate the perturbation of the environment temperature to the measurement values of the curvature. Under the same conditions, though the sensitivity obtained by measuring group modal birefringence is low, it can be regarded as a curvature sensor which is insensitive to temperature.关键词
弯曲传感器/侧漏型光子晶体光纤/高灵敏度/宽线性范围Key words
curvature sensor/side-leakage photonic crystal fiber/high sensitivity/broad linear measurement range引用本文复制引用
娄淑琴,王鑫,尹国路,韩博琳..基于侧漏型光子晶体光纤高灵敏度宽线性范围弯曲传感器的研究[J].物理学报,2013,(19):253-259,7.基金项目
国家自然科学基金(批准号:61177082,61205074)和北京市自然科学基金(批准号:4122063)资助的课题 （批准号:61177082,61205074）
