摘要
设计了一种新型光子晶体光纤（PCF）磁场和温度传感结构.在光子晶体光纤包层的一个空气孔中填充磁流体,形成定向耦合结构,检测结构的磁场和温度变化.利用全矢量有限元法（FEM）对该传感器特性进行了仿真研究.结果表明,该传感结构可以实现磁场范围为100～250Oe（1Oe=79.58A/m）,温度范围为10～60℃的检测,在该范围内磁场和温度的灵敏度最高可达1.10nm/Oe和-3.86nm/℃.
A high sensitivity magnetic field and temperature sensing structure based on photonic crystal fiber（PCF）is designed.Magnetic liquid is filled in an air hole of PCF cladding to form the directional coupling structure.The magnetic field and temperature variations of the structure are measured.The characteristics of the sensor are studied simulatively by using a full vector finite element method（FEM）.The results show that the sensing structure can realize measurement within the magnetic field range of 100～250Oe（1Oe=79.58A/m）and the temperature range of 10～60℃.The magnetic field and temperature sensitivities can reach 1.10nm/Oe and-3.86nm/℃ within the range.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2016年第7期42-48,共7页
Acta Optica Sinica
基金
国家自然科学基金(61275067)
关键词
光纤光学
光子晶体光纤传感器
定向耦合
磁场
温度
fiber optics
photonic crystal fiber sensor
directional coupling
magnetic field
temperature
