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50 Gb/s PAM4 underwater wireless optical communication systems across the water–air–water interface

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摘要

A 50 Gb/s four-level pulse amplitude modulation (PAM4) underwater wireless optical communication (UWOC) system across the water–air–water interface is demonstrated in practice. In practical scenarios, laser beam misalignment due to oceanic turbulence degrades performance in UWOC systems. With the adoption of a reflective spatial light modulator (SLM) with electrical controller, not only can the laser be arbitrarily adjusted to attain a water–air–water scenario, but oceanic engineering problems can also be resolved to establish a reliable UWOC link. Brilliant bit error rate performance and clear PAM4 eye diagrams are attained by adopting a Keplerian beam expander and a SLM electrical controller. This proposed PAM4 UWOC system presents a feasible state that outperforms existing UWOC systems due to its feature providing a high-speed water–air–water link.

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作者单位:

    National Taipei University - Main Campus
    National Taipei University of Technology
    National Taipei University of Technology
    National Taipei University of Technology
    National Taipei University of Technology
    National Taipei University of Technology

引用该论文

Li Chung-Yi,Lu Hai-Han,Huang Yong-Cheng,Huang Qi-Ping,Xie Jing-Yan,Tsai Song-En. 50 Gb/s PAM4 underwater wireless optical communication systems across the water–air–water interface[J].Chinese Optics Letters,2019,17(10):10.