PROJECT TITLE :

Observation of Backward Guided-Acoustic-Wave Brillouin Scattering in Optical Fibers Using Pump–Probe Technique

ABSTRACT:

We experimentally demonstrate the observation of backward (i.e., opposite of the direction of the pump) guided-acoustic-wave Brillouin scattering (GAWBS) using the pump–probe technique and investigate the spectral dependence on the pump–probe light-weight power. We tend to show that the signal-to-noise ratio (SNR) of the backward GAWBS measurement can be drastically improved by using this method. We additionally observe a nonmonotonic dependence of the SNR on the probe power, which indicates that optimal probe power exists for implementing GAWBS-based mostly distributed sensors.


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