Moving-grating optical fiber sensor

Lexin Wang; Zhimin Zhao; Lei Shi; Yong Gao

doi:10.1117/12.444616

11 October 2001 Moving-grating optical fiber sensor

Lexin Wang, Zhimin Zhao, Lei Shi, Yong Gao

Proceedings Volume 4604, Fiber Optic Components, Subsystems, and Systems for Telecommunications; (2001) https://doi.org/10.1117/12.444616
Event: International Symposium on Optoelectonics and Microelectronics, 2001, Nanjing, China

Abstract

A new kind of optical fiber sensor, transmission moving-grating optical fiber sensor is presented. Optical fiber is used as light-transmitting element in this kind of sensor. Sensitive element is a couple of equal pitch gratings, the one is a fixed grating, the other is a moving grating. Light flux changes as the position of the two gratings change, then after transformed by the photoelectric conversion system, the signals are output as electronic signals. Because of its simple structure and convenient operating, this kind of sensor can be used to measure displacement, strain and other physical quantities. Theoretical analysis of this sensor and experiment results of displacement measurement are provided in this paper. The results indicate that theoretical analysis is identical with experiment results and the sensor has a certain measuring sensitivity.

Citation Download Citation

Lexin Wang, Zhimin Zhao, Lei Shi, and Yong Gao "Moving-grating optical fiber sensor", Proc. SPIE 4604, Fiber Optic Components, Subsystems, and Systems for Telecommunications, (11 October 2001); https://doi.org/10.1117/12.444616

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