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Single carrier 400G signal generation and detection is achieved using 100GbE-grade modulator and photo-detectors with novel 4-PAM to 16-QAM signal emulation. Eight DP-16QAM channels are transmitted using EDFA-only amplification over 2,424-km, achieving 5.33-b/s/Hz spectral efficiency.
We investigate interchannel nonlinearity compensation in a 3×114-Gb/s WDM system at 50-GHz channel spacing. Three sampling oscilloscopes simultaneous capture the waveforms at the three wavelengths, and the signals are jointly backpropagated to undo XPM.
We report the transmission of 3×112-Gb/s DP-16QAM at 20 GHz channel spacing over 35×80-km spans of ultra-large effective area fiber (ULAF), with interchannel nonlinearity compensation at a coherent receiver.
Record 1.2-Tb/s (25λ×48Gb/s/λ) symmetric WDM-OFDMA-PON is demonstrated over 90km SSMF with a 1:32 passive split, featuring multi-band-OFDMA, digitally-selective ONUs and a coherent receiver OLT. The architecture supports 800 ONUs with 1.25/10-Gb/s guaranteed/peak rates.
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 achieved BER below 3.8×10-3.
Record capacity transmission of 101.7-Tb/s (370×294-Gb/s) is performed over 3×55 km SSMF using PDM-128QAM-OFDM modulation and pilot-based phase noise mitigation. Achieved spectral efficiency of 11 bits/s/Hz is the highest reported to date for WDM transmission.
We demonstrate mode-division multiplexed WDM transmission using the LP01 and LP11 modes of a few-mode fiber. The signal is recovered using a 6×6 MIMO equalizer at the receiver after amplification by a few-mode EDFA.
We demonstrate a four-wave-mixing-based wavelength converter suitable for coherent optical transmission at 100 Gb/s/λ and beyond that uses phase-diversity and nonconstant amplitude modulation formats. Our setup consists of 2 m of bismuth oxide-based nonlinear fiber and two copolarized external cavity pump lasers. We demonstrate wavelength conversion of 112-Gb/s polarization-multiplexed return-to-zero...
By employing a novel scheme we have generated 112.8-Gb/s polarization-multiplexed (PM)-RZ-64QAM optical signal. Transmission of 112.8-Gb/s PM-RZ-64QAM optical signal over 2??40km of SSMF has been demonstrated in an 8-channel WDM environment on a 12.5GHz grid.
We report a novel design for high-speed all-optical OFDM employing coupler interferometry for IFFT/FFT. 160-Gb/s DQPSK transmission using eight sub-carriers was simulated, while 25-Gb/s DPSK experiment using two sub-carriers was performed using matched delay interferometers.
We designed and built a novel all-optical re-timing, re-amplifying, and re-shaping (3R) regeneration system based on terahertz optical asymmetric demultiplexers (TOADs) developed in our laboratory. The system is capable of parallel processing multiple wavelengths, a feature which will significantly improve the scalability of current wavelength division multiplexing (WDM) networks. Performance against...
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