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Increasing the capacity and spectral efficiency of high speed optical transmission over transoceanic lengths of single-mode fiber is a great challenge due to limited signal to noise ratio at the receiver. Capacity can be optimized by tailoring modulation formats. However, beyond 6 bits/symbol in four-dimensional space, it is still not clear if high dimensional modulation formats can outperform two-dimensional...
400G superchannel with four parallel 100-GbE subcarriers is successfully transmitted in real-time over 3600-km of DMF link using 150-GHz bandwidth. Optical Nyquist shaping is employed to reduce performance penalty induced by sharp optical filtering.
A superchannel transmitter with fixed 1-Tb/s net data rate and flexible modulation format suitable for dynamic distance/route transmission is proposed. System reach between 800 and 6,000km was achieved with spectral efficiency from 6.15b/s/Hz and 3.33b/s/Hz.
We experimentally demonstrate 36-Gb/s source-free single-wavelength upstream OFDMA-PON transmission, enabled by ONU carrier suppression and coherent reception at the OLT. A BER ≪10−3 is reported over 100km SSMF and a 1:32 optical split.
An automated learning approach based on the genetic algorithm (GA) is proposed to automatically learn the write strategy in an optical recording device for dye recording media. Jitters corresponding to different lengths of pits and lands are utilized as the optimization index.
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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