2011 · 38 citations · 8 references
EngineeringElectrical EngineeringPhysicsOpticsOptoelectronicsPhotonicsFiber OpticsFiber-optic CommunicationOptical AmplifiersOptical CoherenceOptical Communication SystemsOptical ModulationCoherent DetectionCoherent ModulationCoherent Optical CommunicationDirect-detection Optical CommunicationOptical MultiplexingOptical NoiseOptical Transmission SystemsSignal-to-noise Ratio
A novel scheme to generate coherent 112 optical sub-carriers with subcarrier spacing of 25GHz is proposed and experimentally demonstrated. By using these coherent optical subcarriers, we have successfully generated 10-Tbit/s (112×100Gbit/s) single channel optical OFDM polarization multiplexing QPSK signal with the bandwidth of 2.8THz and the optical signal noise ratio greater than 20dB (0.1nm bandwidth for each subchannel). We have transmitted the 11.2-Tbit/s optical OFDM signal over 640-km SMF-28 with an amplifier span of 80km and EDFA-only.
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1-Tb/s per Channel Coherent Optical OFDM Transmission with Subwavelength Bandwidth Access