Evaluation Parameter for Self-Healing FBG Sensor Networks After Multiple Fiber Failures

Author

Dagong Jia ; Yulong Zhang ; Zhitong Chen ; Hongxia Zhang ; Tiegen Liu ; Yimo Zhang

Author_Institution

Coll. of Precision Instrum. & Opto-Electron. Eng., Tianjin Univ., Tianjin, China

Volume

7

Issue

4

fYear

2015

fDate

Aug. 2015

Firstpage

1

Lastpage

7

Abstract

Quantitatively evaluating the reliability of fiber Bragg grating (FBG) sensor networks becomes problematic as the number of working fiber failures increases in dedicated protection mode. To solve this problem, a signal attenuation rate (SAR) of the sensor system is proposed to evaluate self-healing capabilities after increased working fiber failures. We analyze the influencing factors and calculate the theoretical values of SAR under different network states for values of split ratio a = 0.1, 0.5, and 0.9. Our theoretical model was experimentally demonstrated using an FBG sensor network with four sensors. The results of our calculations using this model agree with our experimental results.

Keywords

Bragg gratings; fibre optic sensors; light attenuation; evaluation parameter; multiple fiber failures; network states; self-healing FBG sensor networks; signal attenuation rate; Couplers; Optical fiber couplers; Optical fiber networks; Optical fiber sensors; Fiber Bragg gratings; Fiber optics sensors; fiber Bragg grating (FBG); self-healing; signal attenuation rate (SAR);

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2015.2442175

Filename

7118646