Journal
2022 ITALIAN CONFERENCE ON OPTICS AND PHOTONICS (ICOP)
Volume -, Issue -, Pages -Publisher
IEEE
DOI: 10.1109/ICOP56156.2022.9911725
Keywords
phase retrieval; direct-detection; machine learning; Kramers-Kronig receiver
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Funding
- MIUR
- University of Padova
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In this paper, we propose a deep learning-based phase retrieval scheme that can perform full-field recovery and compensate for propagation-related impairments. Simulation results show that this scheme can relax the requirements for carrier-to-signal power ratio and improve receiver sensitivity.
We propose a deep learning-based phase retrieval scheme to recover the phase of a minimum-phase signal after single-photodiode direct-detection. We show that, by properly generating the training data for the deep learning model, the proposed scheme can jointly perform full-field recovery and compensate for propagation-related linear and nonlinear impairments. Simulation results in relevant transmission system settings show that the proposed scheme relaxes the carrier-to-signal power ratio (CSPR) requirements by 2.8-dB and achieves 1.8-dB better receiver sensitivity while being on average 6 times computationally faster than the conventional 4-fold upsampled Kramers-Kronig receiver aided with digital-back-propagation.
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