【摘要】 研究了高双折射光纤环镜的应变传感原理,推导了谐振波长与轴向应变的关系式,并进行了实验研究.该传感器具有很高的灵敏度:谐振波长漂移为0 .031 8 nm/με,约是裸光纤光栅的32倍.谐振波长和轴向应变之间的线性拟合度为0 .999 4 .该传感器具有灵敏度高、结构紧凑、使用方便等优点.更多还原

【Abstract】 A strain sensor based on high-birefringence(HB) fiber loop mirror was theoretically and experimentally investigated.When the HB fiber was applied to axial strain,the transmission spectrum of the high-birefringence fiber loop mirror shifts.The relationship between shift and strain was derived.The experimental result shows that the resonant wavelength shift is 0.031 8 nm/με,which is 32 times higher than that of fiber Bragg gratings and in good accordance with the theory.The linear regression is 0.999 4.The strain sensor has the advantages of high sensitivity,compact configuration and conveniently using.更多还原