Simultaneous Measurement of Strain and Load Using a Fiber Laser Sensor

Author

Gao, Liang ; Chen, Lin ; Huang, Long ; Liu, Shengchun ; Yin, Zuowei ; Chen, Xiangfei

Author_Institution

Coll. of Eng. & Appl. Sci. & Nat. Lab. of Solid State Microstructures, Nanjing Univ., Nanjing, China

Volume

12

Issue

5

fYear

2012

fDate

5/1/2012 12:00:00 AM

Firstpage

1513

Lastpage

1517

Abstract

There are longitudinal-mode beat frequency and polarization-mode beat frequency in the beat frequency spectrum of a fiber laser. Thus, a fiber laser sensor for simultaneous measurement of strain and load by monitoring both the longitudinal-mode beat frequency and polarization-mode beat frequency is proposed and demonstrated in this paper. The maximum experimental errors of strain and load obtained are within and g over ranges of 0-960 and 0-600 g. The presented method makes full use of the sensing information of the fiber laser sensor and improves its sensing ability significantly.

Keywords

fibre lasers; fibre optic sensors; strain measurement; fiber laser sensor; load measurement; longitudinal-mode beat frequency; polarization-mode beat frequency; strain measurement; Cavity resonators; Educational institutions; Fiber lasers; Measurement by laser beam; Optical fiber polarization; Optical fiber sensors; Strain; Beat frequency; fiber laser sensor; simultaneous measurement;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2011.2174150

Filename

6064863