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Proceedings Paper

Long distance Φ-OTDR system based on Raman and EDFA synthetic amplification
Author(s): Xiaozhong Tian; Yuan Yu; Meng Zhao; Guohui Jiang
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Paper Abstract

Comprehensive using of Raman amplifier and bi-directional Er-doped fiber amplifier (EDFA), a long distance (72.3 km) Φ-OTDR system is demonstrated. In this system, a LD laser (~500mw) with wavelength from 1420 nm to 1470 nm is used as both EDFA pump power and Raman pump power. Meanwhile, difference value of upper-envelope and lower-envelope of Rayleigh scattering trace is calculated to test the sensitivity of the system, the intrusion with SNR of 3.99 dB、8.59 dB at two test points of sensing fiber is extracted.

Paper Details

Date Published:
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Proc. SPIE 10464, AOPC 2017: Optical Information and Network (Optical Fiber Sensors), 104640X; doi: 10.1117/12.2284935
Show Author Affiliations
Xiaozhong Tian, PetroChina Pipeline R&D Ctr. (China)
Yuan Yu, Qinhuangdao Oil and Gas Transportation Co. (China)
Meng Zhao, Tianjin Port Holdings Co., Ltd. (China)
Guohui Jiang, Qinhuangdao Oil and Gas Transportation Co. (China)


Published in SPIE Proceedings Vol. 10464:
AOPC 2017: Optical Information and Network (Optical Fiber Sensors)

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