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Chin. Opt. Lett.
 Home  List of Issues    Issue 11 , Vol. 16 , 2018    10.3788/COL201816.110603

High resolution inclinometer based on vertical pendulum and fiber Bragg grating Fabry–Perot cavity
Peng Cui1;2, Wentao Zhang2;3, and Ying Song1
1 School of Traffic and Transportation, [Shijiazhuang Tiedao University], Shijiazhuang 050043, China
2 State Key Laboratory of Transducer Technology, [Institute of Semiconductors, Chinese Academy of Sciences], Beijing 100083, China
3 [College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences], Beijing 100049, China

Chin. Opt. Lett., 2018, 16(11): pp.110603

Topic:Fiber optics and optical communication
Keywords(OCIS Code): 060.3735  060.2370  

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.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Posted online:2018/10/31

Get Citation: Peng Cui, Wentao Zhang, and Ying Song, "High resolution inclinometer based on vertical pendulum and fiber Bragg grating Fabry–Perot cavity," Chin. Opt. Lett. 16(11), 110603(2018)

Note: This work was 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), and the Key Project of Hebei Educational Committee (No. BJ2016048).


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