Phase-Retrieval Coherent Detection with On-Chip Photonic Linear Processing
M. Nakajima, Toshikazu Hashimoto · Frontiers in Optics + Laser Science 2021 · 2021
We propose phase-retrieval coherent detection with hybrid optical and digital signal processing. By using an on-chip photonic convolutional processor and digital postprocessing, 20-GBaud QPSK signals were recovered from intensity-only measurement.