Stable entire-length measurement of fiber strain distribution by Brillouin optical correlation-domain reflectometry with polarization scrambling and noise-floor compensation
We performed a stable high-speed entire-length measurement of strain distribution by suppressing the signal fluctuations automatically using polarization scrambling. Strain distribution along the entire length of a 100-m fiber was successfully measured with 40-cm spatial resolution and 19-Hz sampling rate. We also demonstrated a signal-to-noise ratio improvement by compensating the noise-floor of the electrical spectrum analyzer.
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