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43 Gb/s DQPSK Pre-equalization employing 6-bit, 43GS/s DAC Integrated LSI for Cascaded ROADM Filtering

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Abstract

Electronic pre-equalization for 43 Gb/s DQPSK has been demonstrated for the first time. Waveform distortion caused by bandwidth narrowing to 18.1 GHz by cascaded 10 Gb/s ROADMs has been adequately pre-equalized by a SiGe-BiCMOS LSI with 6-bit, 43 GS/s digital-to-analog converters.

© 2010 IEEE Communications Society, IEEE Photonics Society, OSA, Telcordia

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