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Digitally Enhanced DAC: Low-Resolution Digital Pre-Compensation for High Speed Optical Links

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Abstract

A novel algorithm is proposed to overcome bandwidth limitation using low-resolution DACs. We demonstrate electrical back-to-back 32Gbaud QAM-64 over 11GHz and optical 32Gbaud QAM-4 over 5GHz using 4 bits and 2.6 bits DACs respectively.

© 2018 The Author(s)

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