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Sensors 2018, 18(2), 505; doi:10.3390/s18020505

Optical Fiber Sensors Based on Fiber Ring Laser Demodulation Technology

1
College of Information Science and Engineering, Northeastern University, Shenyang 110819, China
2
State Key Laboratory of Synthetical Automation for Process Industries, Shenyang 110819, China
*
Author to whom correspondence should be addressed.
Received: 31 December 2017 / Revised: 3 February 2018 / Accepted: 5 February 2018 / Published: 8 February 2018
(This article belongs to the Special Issue Optical Fiber Sensors 2017)
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Abstract

A review for optical fiber sensors based on fiber ring laser (FRL) demodulation technology is presented. The review focuses on the principles, main structures, and the sensing performances of different kinds of optical fiber sensors based on FRLs. First of all, the theory background of the sensors has been discussed. Secondly, four different types of sensors are described and compared, which includes Mach–Zehnder interferometer (MZI) typed sensors, Fabry–Perot interferometer (FPI) typed sensors, Sagnac typed sensors, and fiber Bragg grating (FBG) typed sensors. Typical studies and main properties of each type of sensors are presented. Thirdly, a comparison of different types of sensors are made. Finally, the existing problems and future research directions are pointed out and analyzed. View Full-Text
Keywords: fiber ring laser; optical fiber sensor; Mach–Zehnder interferometer; Fabry–Perot interferometer; Sagnac; fiber Bragg grating fiber ring laser; optical fiber sensor; Mach–Zehnder interferometer; Fabry–Perot interferometer; Sagnac; fiber Bragg grating
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Xie, W.-G.; Zhang, Y.-N.; Wang, P.-Z.; Wang, J.-Z. Optical Fiber Sensors Based on Fiber Ring Laser Demodulation Technology. Sensors 2018, 18, 505.

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