All-optical phase and amplitude regenerator for next-generation telecommunications systems
All-optical phase and amplitude regenerator for next-generation telecommunications systems
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DOI：
10.1038/nphoton.2010.203
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发表时间：
2010-10-01
期刊：
影响因子：
35
通讯作者：
Richardson, David J.
中科院分区：
文献类型：
--
作者：
Slavik, Radan;Parmigiani, Francesca;Richardson, David J.
光纤通信系统传统上使用光振幅的二进制（开-关）编码来承载数据。然而，下一代系统将同时使用光载波的幅度和相位来实现更高的频谱效率，从而实现更高的总体数据容量（1，2）。虽然这种方法需要高度复杂的发射机和接收机，但是从光场（3）的幅度和相位的完全知识中获得的增加的容量和许多进一步的实际益处超过了这种额外的硬件复杂性，并且可以大大简化光网络设计。然而，复杂光场的使用对系统性能产生了新的主要限制-非线性相位噪声（4，5）。因此，开发一种消除这种噪声的装置具有重要的技术意义。在这里，我们报告的第一个实用的（“黑盒”）全光再生器能够消除相位和幅度噪声从二进制相位编码的光通信信号的发展。
Fibre-optic communications systems have traditionally carried data using binary (on-off) encoding of the light amplitude. However, next-generation systems will use both the amplitude and phase of the optical carrier to achieve higher spectral efficiencies and thus higher overall data capacities(1,2). Although this approach requires highly complex transmitters and receivers, the increased capacity and many further practical benefits that accrue from a full knowledge of the amplitude and phase of the optical field(3) more than outweigh this additional hardware complexity and can greatly simplify optical network design. However, use of the complex optical field gives rise to a new dominant limitation to system performance-nonlinear phase noise(4,5). Developing a device to remove this noise is therefore of great technical importance. Here, we report the development of the first practical ('black-box') all-optical regenerator capable of removing both phase and amplitude noise from binary phase-encoded optical communications signals.