Single-wavelength transmission at 1.1-Tbit/s net data rate over a multi-modal free-space optical link using commercial devices.
Single-wavelength transmission at 1.1-Tbit/s net data rate over a multi-modal free-space optical link using commercial devices.
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DOI：
10.1364/ol.463941
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发表时间：
2022-06
期刊：
影响因子：
3.6
通讯作者：
Zhouyi Hu;Yiming Li;D. Benton;Abdallah El Ali;Mohammed Patel;A. Ellis
中科院分区：
文献类型：
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作者：
Zhouyi Hu;Yiming Li;D. Benton;Abdallah El Ali;Mohammed Patel;A. Ellis
我们采用商用模式选择光子灯来实现高容量自由空间光通信的模式复用和解复用。此外，我们设计了一个时分复用帧结构，以有效地模拟多个独立的发射机信道化预编码只用一个发射机。为了最大限度地提高系统的吞吐量，我们优化了传输数据的模式，并对不同的信道应用自适应加载。通过利用模分复用和极化复用，自由空间光数据链路由多个独立通道组成，提供1.1 Tbit/s的总净数据速率和28.35 bit/s/Hz的净频谱效率。与之前许多基于相同数据流的延迟或部分延迟副本的演示不同，据我们所知，我们的演示是通过具有完全独立信道的单波长模分复用自由空间光通信系统实现的创纪录的高净数据速率和净频谱效率。此外，在这项工作中使用的所有关键设备，包括光转发器、多路复用器和多路复用器都是市售的。
We employ commercial mode-selective photonic lanterns to implement mode multiplexing and demultiplexing for high-capacity free-space optical communications. Moreover, we design a time-division-multiplexed frame structure to efficiently emulate multiple independent transmitters with channelized precoding using only one transmitter. To maximize the throughput of the system, we optimize the modes selected for carrying data, and apply adaptive loading to different channels. By leveraging mode- and polarization-division multiplexing, the free-space optical data link comprising multiple independent channels provides an aggregate net data rate of 1.1 Tbit/s and net spectral efficiency of 28.35 bit/s/Hz. Different from many previous demonstrations based on delayed or partially delayed copies of identical data streams, to the best of our knowledge, ours is a record-high net data rate and net spectral efficiency achieved by a single-wavelength mode-division multiplexed free-space optical communication system with fully independent channels. Moreover, all key devices used in this work, including optical transponder, multiplexer, and demultiplexer are commercially available.