Title :
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
fDate :
5/1/2012 12:00:00 AM
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;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2011.2174150
