Improvement of accuracy for measurement of 100-km fibre latency with Correlation OTDR
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correlationfibrelatencyotdrsignalaccuracyachievedbase
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We measured the latency of a 100 km fibre link using a Correlation OTDR. Improvements over previous results were achieved by increasing the probe signal rate to 10 Gbit/s, using dispersion compensation gratings, and coupling the receiver time base to an external PPS signal.
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