Acta Photonica Sinica, Volume. 50, Issue 11, 1106001(2021)
Monitoring of Ice Coating Thickness of Tight-buffered OPGW Based on Brillouin Optical Time Domain Reflectometer
In order to obtain more precise icing thickness distribution within a span, a special icing monitoring technique for tight tube Optical Fiber Composite Overhead Ground Wire (OPGW) is proposed and preliminary verified by experiments. This method utilizes the distributed strain sensing capability of Brillouin optical time domain reflectometer. The strain distribution of OPGW was obtained by measurement, and then the weight distribution was derived based on mechanical analysis method. the specific icing thickness distribution was obtained via the conversion between weight and icing thickness. In the simulation with a suspended optical cable, the errors of the experimental results are 2.27% and 15.77% for two uniform loadings of 5 kg and 2.5 kg, which preliminarily verifies the effectiveness of the proposed method. The error analysis shows that the effect of the proposed method is better for longer span range in practice, because it allows longer spatial resolution which can improve the strain measurement accuracy.
Get Citation
Copy Citation Text
Hao LI, Feng WANG, Xiao ZHOU, Xinyu YUAN, Shiyi LI, Yixin ZHANG, Xuping ZHANG. Monitoring of Ice Coating Thickness of Tight-buffered OPGW Based on Brillouin Optical Time Domain Reflectometer[J]. Acta Photonica Sinica, 2021, 50(11): 1106001
Category: Fiber Optics and Optical Communications
Received: Apr. 15, 2021
Accepted: Jul. 9, 2021
Published Online: Dec. 2, 2021
The Author Email: WANG Feng (wangfeng@nju.edu.cn)