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arXiv · 1612.03893

Phase-sensitive optical time-domain reflectometry with pulse mode EDFA: Probe pulse preparation

A. O. Chernutsky·A. A. Zhirnov·A. K. Fedorov·E. T. Nesterov·K. V. Stepanov·Ya. A. Tezadov·E. V. Kondrashin·V. E. Karasik·A. B. Pnev
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Abstract

Probe pulse preparation techniques play an important role for fiber-optic sensing. In this work, we investigate a setup for distributed sensors based on phase-sensitive optical time domain reflectometry ($Φ$-OTDR) with the use of an erbium doped fibre amplifier (EDFA). In our $Φ$-OTDR setup with pulse mode EDFA, we reveal a regime providing us both sufficiently large amplification of the probe pulse power together and adequately small probe pulse distortion. We then show that the use of pulse mode EDFA is a cost-effective solution, which allows one to avoid nonlinear effect and ensure sufficient sensitivity of the setup.

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A. O. Chernutsky, A. A. Zhirnov, A. K. Fedorov, E. T. Nesterov, K. V. Stepanov, Ya. A. Tezadov, E. V. Kondrashin, V. E. Karasik, A. B. Pnev. 2018-03-08. Phase-sensitive optical time-domain reflectometry with pulse mode EDFA: Probe pulse preparation. https://doi.org/10.1109/piers.2017.8262121

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