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Demonstration of Baud-Rate-Variable and Channel- Spacing-Tunable Demultiplexing of 10-40-Gbaud OFDM Subcarriers using a Multi-Tap Optical DFT
Fiber optics links subsystems Nonlinear wave mixing
2015/5/25
We experimentally demonstrate a tunable and reconfigurable optical DFT to demodulate 10-40-Gbuad OFDM with 2/3/4 subcarriers at 20/40GHz frequency spacing. Average power penalty of ~7 dB at BER of 10 ...
WDM Transmission of 152-Gb/s Polarization Multiplexed RZ-16QAM Signals with 25-GHz Channel Spacing over 15× ×80-km of SSMF
Fiber optical communications Fiber optics links subsystems
2015/5/22
We demonstrate transmission of 20×152-Gb/s PolMux-RZ-16QAM at a channel spacing of 25 GHz (5.68 b/s/Hz) over 15×80-km spans of SSFM. Coherent detection was used to recover the transmitted data and we ...
Impact of transparent network constraints on capacity gain of elastic channel spacing
network constraints channel spacing capacity gain
2015/5/15
We compare fixed-grid network architectures with variable-spacing OFDM based solutions. We show that capacity gains can reach up to 50% but are strongly affected by physical and topological constraint...
Stimulated Brillouin Scattering based In-Band OSNR Monitoring for 40G and 100G Deployment in Optical Networks with 100 GHz and 50 GHz Channel Spacing
Fiber optics communications Fiber optics links subsystems
2015/6/10
We present an improved approach for SBS based in-band OSNR monitoring with a drastic enhancement of the dynamic monitoring range for 44.6 Gbps DPSK and 112 Gbps DP-QPSK signals by intentionally adding...
Transmission of 42.8-Gb/s Polarization Multiplexed RZ- QPSK DWDM Signals over 3900 km with 12.5-GHz Channel Spacing and Coherent Detection
Fiber optical communications Fiber optics links subsystems
2015/6/9
We have experimentally demonstrated 42.8Gb/s DWDM transmission over 3900km SMF-28 with 12.5-GHz channel spacing and coherent detection. Eight polarization-multiplexed-RZ-QPSK signals have been success...
A Novel Optical Fast OFDM with Reduced Channel Spacing Equal to Half of the Symbol Rate Per Carrier
Fiber optics communications Modulation
2015/6/8
We propose a novel discrete-cosine-transform based optical fast OFDM (FOFDM) to reduce the channel spacing to half of the symbol rate per carrier, and numerically evaluate the performance of 20Gbaud P...
Multi-Rate (111-Gb/s, 2x43-Gb/s, and 8x10.7-Gb/s) Transmission at 50-GHz Channel Spacing over 1040-km Field-Deployed Fiber
Multi-Rate Transmission Channel Spacing over Field-Deployed Fiber
2015/7/30
111-Gb/s transmission combined with 2x43-Gb/s and 8x10.7-Gb/s on a 50-GHz grid over 1,040-km field fiber and two ROADMs is demonstrated, showing the feasibility of 100G overlaying existing 10G/40G com...