40G burst mode optical clock recovery after 52 km transmission enabled by a dynamically switched quantum dash mode-locked laser

We demonstrate for the first time 40 Gb/s burst mode optical clock recovery after 52 km transmission which is enabled by injection locking a dynamically switched quantum dash mode-locked laser diode. 40 GHz packet clock is recovered with ~25 ns locking time, 46 dB signal to noise floor suppression and 64 fs timing jitter.