39.4-Gb/s Duobinary Transmission Over 24.4 m of Coaxial Cable Using a Custom Indium Phosphide Duobinary-to-Binary Converter Integrated Circuit

We show, for the first time, duobinary transmission of 39.4-Gb/s data over a 24.4-m-long 5.2-mm-diameter coaxial cable with SMA connectors, enabled by the design of a custom 40-Gb/s HBT indium phosphide duobinary-to-binary converter integrated circuit (IC). We achieve a bit error rate better than 3 times 10-12 with a 215- 1 b sequence, using clock recovery. The transmission experiment and design of the duobinary-to-binary converter IC are discussed in detail.

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