A two-channel parallel processing precoder IC module for 40 Gbit/s optical duobinary transmission systems is described. The IC is fabricated with 0.1 µm InAlAs/InGaAs/InP HEMTs in order to achieve 20 Gbit/s processing speed per channel with low power consumption. Error-free operation of the IC packaged as a module is confirmed at 21.5 Gbit/s.
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Murata et al. (2000) studied this question.
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