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Conferences > OFC > 2021 > Th5D > Th5D.3

Direct-Detection Based Frequency-Resolved I/Q Imbalance Calibration for Coherent Optical Transmitters

Xi Chen and Di Che

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Abstract

We propose a method for calibrating the frequency dependent I/Q imbalance in coherent optical transmitters. We demonstrate that with our calibration, the OSNR penalty of a 58-GBaud 256-QAM signal can be reduced by 2.5 dB.

© 2021 The Author(s)

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