Abstract

The technique known as external Brillouin amplification of Rayleigh scattering is characterized in the detuning regime. When employed as an amplifier of OTDR signals, it is shown that the signal-to-noise ratio is significantly improved for optimum pump Stokes detuning, leading to enhanced nanostrain sensitivity. This effect is due to the Brillouin bandwidth dependence on the Stokes power.

© 2017 Optical Society of America

Brillouin amplification and processing of the Rayleigh scattered signal

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Enhanced phase-sensitive OTDR system with pulse width modulation Brillouin amplification

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Linearly polarized low-noise Brillouin random fiber laser

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