High sampling rate multi-pulse phase-sensitive OTDR employing frequency division multiplexing

Zhengqing Pan; Zhaoyong Wang; Qing Ye; Haiwen Cai; Ronghui Qu; Zujie Fang

doi:10.1117/12.2059729

2 June 2014 High sampling rate multi-pulse phase-sensitive OTDR employing frequency division multiplexing

Zhengqing Pan, Zhaoyong Wang, Qing Ye, Haiwen Cai, Ronghui Qu, Zujie Fang

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91576X (2014) https://doi.org/10.1117/12.2059729
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A novel high sampling rate multi-pulse phase-sensitive OTDR (Φ-OTDR) employing frequency division multiplexing (FDM) is proposed to increase the sampling rate of the long distance sensor system. Compared with the conventional Φ- OTDR, the new system owns much higher detection bandwidth as more probe pulses are allowed simultaneously traveling in the sensing fiber. The feasibility of the technique is experimentally verified. By multiplexing four different frequencies, we realize a experimental system with 20kHz vibration detection bandwidth over 10km sensing range.

Citation Download Citation

Zhengqing Pan, Zhaoyong Wang, Qing Ye, Haiwen Cai, Ronghui Qu, and Zujie Fang "High sampling rate multi-pulse phase-sensitive OTDR employing frequency division multiplexing", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91576X (2 June 2014); https://doi.org/10.1117/12.2059729

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