A Pendulum based Optical Fiber Inclinometer with Nanoradian Resolution
Abstract
In this paper, we introduce a novel extrinsic Fabry-Perot interferometer (EFPI)-based optical fiber inclinometer for tilt measurements with 0.015 μrad resolution. The reported inclinometer consists of an EFPI sensor, which is formed between endfaces of a suspended rectangular mass block and a fixed optical fiber, packaged inside a rectangular container box with an oscillation dampening device. Importantly, the two reflectors of the EFPI sensor remain parallel while the cavity length of EFPI sensor meters a change in tilt. The sensor design and the measurement principle are discussed. An experiment based on measuring the tilt angle of a simply-supported beam induced by a small load is presented to verify the resolution and accuracy of a prototype inclinometer.
Recommended Citation
Y. Zhuang and J. Huang, "A Pendulum based Optical Fiber Inclinometer with Nanoradian Resolution," Proceedings of the SPIE Smart Structures + Nondestructive Evaluation (2018, Denver, CO), SPIE, Mar 2018.
The definitive version is available at https://doi.org/10.1117/12.2296603
Meeting Name
SPIE Smart Structures + Nondestructive Evaluation (2018: Mar. 4-8, Denver, CO)
Department(s)
Electrical and Computer Engineering
Research Center/Lab(s)
Intelligent Systems Center
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2018 SPIE, All rights reserved.
Publication Date
08 Mar 2018
