Distributed section-localization of an impact in a composite cylinder using the phase-sensitive optical time domain reflectometer

Khurram Naeem; Yong-seok Kwon; Il-Bum Kwon

doi:10.1117/12.2267568

23 April 2017 Distributed section-localization of an impact in a composite cylinder using the phase-sensitive optical time domain reflectometer

Khurram Naeem, Yong-seok Kwon, Il-Bum Kwon

Author Affiliations +

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103239F (2017) https://doi.org/10.1117/12.2267568
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

We demonstrate a distributed localization of an impact source in the composite cylinder using a home-made phase sensitive optical time domain reflectometer (Φ-OTDR). The system shows the advantages of simple configuration using semiconductor optical amplifier to improve the spectral response of the pump pulses, high spatial resolution and high signal-to-noise ratio (SNR). With a spatial resolution of 10 m, the SNR could be obtained as high as 6.5 dB. A composite cylinder is longitudinally divided in multiple sections of equal lengths by bending the sensing fibers around it at different locations, and the section of a source impact is localized using the time-delay of the signal detected by the sensing fibers.

Citation Download Citation

Khurram Naeem, Yong-seok Kwon, and Il-Bum Kwon "Distributed section-localization of an impact in a composite cylinder using the phase-sensitive optical time domain reflectometer", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103239F (23 April 2017); https://doi.org/10.1117/12.2267568

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