A novel micrometric displacement fiber grating sensor based on the principle of lever

作者：Yang Xiu Feng^*; Yu Hui; Wang Peng; Tong Zheng Rong; Zhao Jin Ting; Li Qun

来源：Journal of Optoelectronics - Laser, 2010, 21(8): 1156-1158.

• Displacement sensor
• Fiber Bragg grating (fbg)
• Fiber grating sensor
• Fiber gratings
• Lever
• Micrometric displacement
• Multi-parameter measurement
• Packaging structure
• Sensitivity enhancements
• Working range

A novel fiber Bragg grating(FBG) micrometric displacement sensor is designed to improve the sensitivity of the current FBG-based sensors. Since this structure is based on the principle of lever, the length of arm of force can be designed arbitrarily to satisfy different requirements of measurement, which results in that the grating can be strained more considerably as long as not being destroyed. Additionally, this packaging structure can avoid chirp, and it is easy to realize sensor-multiplexing to achieve the multi-dimensional multi-parameter measurement by means of cascading several structures. The experimental results demonstrate that the sensitivity is 12.5 nm/mm within the working range of 0.00-0.20 mm, which is improved more distinctly than other devices.

• 出版日期2010
• 单位天津大学