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论文类型：期刊论文

第一作者：Zihao Yang

通讯作者：Wenchan Dong,Jing Xu

合写作者：Zhuang Fan,Shiqi He,Nuo Chen,Hanghang Li,Heng Zhou,Xinliang Zhang

发表刊物：Optics Express

收录刊物：SCI

卷号：32

期号：4

页面范围：6507-6519

发表时间：2024-02-12

摘要：With the increasing demand for communication capacity, all-optical regeneration of multimode signals is a helpful technology of network nodes and optical signal processors. However, the difficulty of regenerating signal in higher-order modes hinders the practical application of multimode all-optical regenerators. In this study, we experimentally demonstrate the 40 Gb/s all-optical regeneration of NRZ-OOK signal in TE0 and TE1 modes via four-wave mixing (FWM) in the low-loss silicon-based nanowaveguide. By optimizing the parameters of waveguide section to enhance FWM conversion efficiency of two modes, and introducing Euler bending to reduce crosstalk between modes, the transmission loss of the silicon waveguide is 0.3 dB/cm, and the FWM conversion efficiency of the multimode regenerator is as high as -9.6 dB (TE0) and -13.0 dB (TE1). Both modes achieve extinction ratio enhancement of about 6 dB after regeneration. This silicon-based all-optical regenerator has great application potential in all-optical signal processing systems.