Towards a photonic integrated all-optical phase regenerator

• DOI: 10.1364/ol.493475
• Publication Date: 2023-07-05T15:01:07Z
• Authors: Xinjie Han; Haocheng Ke; Huashun Wen; Wenchan Dong; Yunru Fan; Guangwei Deng; Qiang Zhou; Heng Zhou; Kun Qiu; Jing Xu; Yong Geng
• Keywords: Signal regeneration

All-optical phase regeneration aims at restoring the information of coherently encoded data signals directly in optical domain so as to compensate for distortions caused by transceiver imperfections and nonlinear impairments along transmission link. Although it was proposed two decades ago, all-optical has not been seen realistic networks date, mainly because this technique entails complex bulk modules relies on high-precision sensitive dynamics, both which are adverse field deployment. Here, we demonstrate a new, best our knowledge, architecture implement using integrated photonic devices. In particular, realize quadrature quantization exploring phase-sensitive parametric wave mixing within on-chip silicon waveguides, while multiple coherent pump laser tones provided chip-scale micro-cavity Kerr frequency comb. Multi-channel is experimentally demonstrated 40 Gbps QPSK data, achieving SNR improvement more than 6 dB. Our study showcases promising avenue enable practical implementation long-distance fiber networks.