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A multiple-layer-overlay (MLO) modulation format is employed for a 14-km optical fiber link and an enhanced spectral efficiency of 2.36 bits/s/Hz is achieved by multiplexing 3-layer signals with each layer carrying a 2-Gbit/s QPSK signal.
Homodyne detection is of significant interest in optical communications because it detects both the amplitude and phase information of the incoming data channel. One of the challenges in implementing a homodyne receiver is to recover the phase and frequency of the incoming data and to lock these to the local oscillator. We proposed and demonstrated a tunable homodyne detection scheme using two continuous...
We propose a novel method for light path tracing and demonstrate it in 112Gb/s DP-16QAM transmission. The S/N of the detected label exceeds 24dB after 20span transmission. No crosstalk was observed in neighboring DWDM channels.
We demonstrate the record capacity of 16 Tb/s unrepeated transmission over 240 km of large-Aeff fibre without remote optical pre-amplifier using 50 GHz-spaced 224 Gb/s DP-16QAM, corresponding to record capacity-distance product of 3.84 Pb/s·km.
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