Title :
Coupling Intensity Measurement Based on White Light Interferometry in the Distributed Long PMF Sensors
Author :
Zhang, Hongxia ; Ye, Wenting ; Chen, Xinwei ; Jia, Dagong ; Zhang, Yimo
Author_Institution :
Coll. of Precision Instrum. & Opto-Electron. Eng., Tianjin Univ., Tianjin, China
Abstract :
In polarization-maintaining fiber (PMF) sensors, the detected coupling intensity descends obviously with increments of the transmission distance. A long PMF of more than 500 m is tested, the phenomenon of intensity attenuation is investigated experimentally, and a modified method with a reference point is proposed to measure the coupling intensity accurately. The experimental results show that the coupling intensity can be compensated effectively. The absolute error of coupling intensity is less than 0.59 dB.
Keywords :
fibre optic sensors; light interferometry; optical variables measurement; coupling intensity measurement; distributed long PMF sensors; intensity attenuation; polarization-maintaining fiber sensors; reference point; transmission distance; white light interferometry; Attenuation; Couplings; Optical fiber dispersion; Optical fiber polarization; Optical fiber sensors; Optical interferometry; Coupling intensity measurement; dispersion compensation; optical fiber sensors; polarization-maintaining fiber (PMF) sensors; white light interferometry;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2012.2204977
