摘要
In this paper,an inclinometer based on a vertical pendulum and a fiber Bragg grating Fabry-Perot cavity （FBG-FP） is proposed. A low-damping rotation structure is used to reduce the mechanical frictions of the pendulum system and induce a wavelength shift of FBG-FPs. We find that the sensitivity can be maximized by optimizing the parameters of the inclinometer. Using a high-resolution demodulation system, a sensitivity of 179.9 pm/（°）, and a resolution better than 0.02＂ can be achieved. Experiments also show that the proposed inclinometer has good linearity and repeatability.
In this paper,an inclinometer based on a vertical pendulum and a fiber Bragg grating Fabry-Perot cavity （FBG-FP） is proposed. A low-damping rotation structure is used to reduce the mechanical frictions of the pendulum system and induce a wavelength shift of FBG-FPs. We find that the sensitivity can be maximized by optimizing the parameters of the inclinometer. Using a high-resolution demodulation system, a sensitivity of 179.9 pm/（°）, and a resolution better than 0.02＂ can be achieved. Experiments also show that the proposed inclinometer has good linearity and repeatability.
作者
Peng Cui
Wentao Zhang
Ying Song
崔鹏;张文涛;宋颖(School of Traffic and Transportation, Shijiazhuang Tiedao University;State Key Laboratory of Transducer Technology, Institute of Semiconductors, Chinese Academy of Sciences;College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences)
基金
supported by the National Key R&D Program of China(No.2017YFB0405503)
the Youth Innovation Promotion Association of CAS(No.2016106)
the Project of OFCMT(No.SKLD1703)
the Key Project of Hebei Educational Committee(No.BJ2016048)
