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

Volume

12

Issue

9

fYear

2012

Firstpage

2905

Lastpage

2909

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;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2012.2204977

Filename

6218746