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40 Gb/s indoor optical wireless system enabled by a cyclically arranged optical beamsteering receiver

机译：40 GB / S室内光学无线系统由循环排列的光学分子串接收器启用

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摘要

Indoor optical wireless communication with optical beam-steering capability is currently attracting a lot of attention. One major two-dimensional (2D) optical beamsteering scheme is realized by 2D grating or its active counterpart, which is usually based on a spatial light modulator (SLM). However, there is a fundamental trade-off between the field of view (FoV) and power efficiency due to the inherent feature of gratings. In this Letter, we propose a new class of 2D beamsteering, named cyclically arranged optical beamsteering (CAO-BS), which can break that trade-off. Traditional 2D gratings extend the optical beam in the Cartesian coordinates (1D grating in horizontal + 1D grating in vertical), while CAO-BS extends the optical beam in the polar coordinates (1D grating + angular rotation). Since only 1D grating is engaged, the power efficiency increases with the number of grating lobes reduced. In the polar coordinates, the angle rotation tuning in a SLM is quasi-continuous in a full 2 pi range. The CAO-BS is demonstrated at the receiving end in an indoor experimental system. The FoV is 18 degrees by 360 degrees in polar coordinates without any additional mechanical parts. Based on the CAO-BS, 40 Gbit/s on-off keying data is also successfully transmitted over 1 km single-mode fiber and 0.5 m free space. (C) 2018 Optical Society of America
机译：与光束转向能力的室内光学无线通信目前吸引了很多关注。由2D光栅或其有源对应物实现一个主要二维（2D）光学分子方案，其通常基于空间光调制器（SLM）。然而，由于光栅固有的特征，视野（FOV）和功率效率之间存在基本的权衡。在这封信中，我们提出了一种新的2D Beamsteering，命名为循环排列的光学分子（CAO-BS），这可能会破坏该权衡。传统的2D光栅在笛卡尔坐标中延伸光束（在垂直+ 1D光栅中的1D光栅），而CAO-BS在极性坐标（1D光栅+角旋转）中延伸光束。由于仅接合1D光栅，因此功率效率随着光栅凸起的数量而增加。在极性坐标中，SLM中的角度旋转调谐在完整的2 PI范围内是准连续的。 CaO-BS在室内实验系统的接收端进行说明。 FOV在没有任何额外的机械部件的极性坐标中在360度中达到360度。基于CAO-BS，40 Gbit / s开关键控数据也成功传输超过1km单模光纤和0.5米的可用空间。 （c）2018年光学学会

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  • 来源
    《Optics Letters》 |2018年第4期|共4页
  • 作者

    Zhang Xuebing; Liu Yu; Cao Zizheng; Li Fan; Li Zhaohui; Ismaeel R.; Brambilla G.; Chen Y.; Koonen A. M. J.;

  • 作者单位

    Eindhoven Univ Technol NL-5600 MB Eindhoven Netherlands;

    Chinese Acad Sci Inst Semicond State Key Lab Integrated Optoelect Beijing 100083 Peoples R China;

    Eindhoven Univ Technol NL-5600 MB Eindhoven Netherlands;

    Sun Yat Sen Univ State Key Lab Optoelect Mat &

    Technol Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ State Key Lab Optoelect Mat &

    Technol Guangzhou 510275 Guangdong Peoples R China;

    Univ Southampton Optoelect Res Ctr Southampton SO17 1BJ Hants England;

    Univ Southampton Optoelect Res Ctr Southampton SO17 1BJ Hants England;

    Univ Southampton Optoelect Res Ctr Southampton SO17 1BJ Hants England;

    Eindhoven Univ Technol NL-5600 MB Eindhoven Netherlands;

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  • 正文语种 eng
  • 中图分类 计量学;光学;
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