Reconfigurable switching of orbital-angular-momentum-based free-space data channels.
Reconfigurable switching of orbital-angular-momentum-based free-space data channels.
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DOI：
10.1364/ol.38.005118
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发表时间：
2013-12
期刊：
影响因子：
3.6
通讯作者：
Y. Yue;Hao Huang;N. Ahmed;Yan Yan-Yan;Yongxiong Ren;G. Xie;D. Rogawski;M. Tur;A. Willner
中科院分区：
文献类型：
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作者：
Y. Yue;Hao Huang;N. Ahmed;Yan Yan-Yan;Yongxiong Ren;G. Xie;D. Rogawski;M. Tur;A. Willner
光束可以携带轨道角动量（OAM），使得螺旋相锋沿着传播方向扭转。OAM光束已经在各种各样的应用中得到证明，并且已经发现OAM光束为高容量点对点光通信的独立数据流的复用提供了新的正交自由度。然而，为了使其在可重构网络中的有效使用，必须开发操纵OAM波束的方法。我们展示了基于OAM的可重构光开关功能之间的多个OAM光束。三个100 Gb/s的正交相移键控OAM信道之间的选择性数据交换实现了2.1 dB的光信噪比的惩罚。选择性OAM光束操纵方案可以潜在地级联以实现任意n×n开关函数。
Light beams can carry orbital angular momentum (OAM) such that a helical phase front twists along the direction of propagation. OAM beams have been demonstrated in a wide variety of applications and have been found to offer a new orthogonal degree of freedom for multiplexing independent data streams for high-capacity point-to-point optical communications. However, to enable their efficient use in reconfigurable networks, approaches must be developed to manipulate OAM beams. We demonstrate OAM-based reconfigurable optical switching functions among multiple OAM beams. Selective data switching among three 100 Gb/s quadrature phase-shift keying OAM channels was achieved with a 2.1 dB optical signal-to-noise ratio penalty. The scheme of selective OAM-beam manipulation can be potentially cascaded to realize an arbitrary n×n switching function.