Dispersion compensation in coherence domain multiplexed communications systems
We demonstrate dispersion compensation in coherence domain multiplexed (CDM) systems by transmitting three 100 fs signal pulses and a reference pulse in a packet through an optical fiber. In CDM systems, detection of bits is independent of dispersion, but the received packets must still be recognizable. In this case, the separation between packets must be at least as large as the dispersed width of the received packets. The linear-dispersion limited bandwidth of a CDM system exceeds that of a serial system by a factor of √N/2, where N is the number of bits per packet.