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A chromatic-dispersion-free transmission using a time-reversal optical parametric amplifier (OPA) for 10 Gbit/s data over 25 km of standard single-mode fibre is demonstrated. The time-reversal was achieved using optical phase conjugation in the OPA. A pilot signal was first sent to estimate the optical channel, which would be reshaped by the OPA and then retransmitted with data through the same fibre...
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