Terabit-Scale Orbital Angular Momentum Mode Division Multiplexing in Fibers
Terabit-Scale Orbital Angular Momentum Mode Division Multiplexing in Fibers
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DOI：
10.1126/science.1237861
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发表时间：
2013-06-28
期刊：
影响因子：
56.9
通讯作者：
Ramachandran, Siddharth
中科院分区：
文献类型：
--
作者：
Bozinovic, Nenad;Yue, Yang;Ramachandran, Siddharth
互联网数据流量容量正迅速接近由光纤非线性效应所施加的极限。在几乎用尽了对数据进行正交复用的可用自由度之后，现在正在探索利用光纤的空间模式来提高数据容量的可能性。我们证明了利用光的轨道角动量（OAM）来创建在单根光纤中复用的正交、空间上不同的数据传输通道流的可行性。在一段超过1.1千米的、经过特殊设计能使模式耦合最小化的光纤中，我们在单个波长下使用四个角动量模式实现了每秒400吉比特的数据传输，并且在10个波长上使用两个OAM模式实现了每秒1.6太比特的数据传输。这些演示表明，OAM可以为未来光纤网络中的数据复用提供一个额外的自由度。
Internet data traffic capacity is rapidly reaching limits imposed by optical fiber nonlinear effects. Having almost exhausted available degrees of freedom to orthogonally multiplex data, the possibility is now being explored of using spatial modes of fibers to enhance data capacity. We demonstrate the viability of using the orbital angular momentum (OAM) of light to create orthogonal, spatially distinct streams of data-transmitting channels that are multiplexed in a single fiber. Over 1.1 kilometers of a specially designed optical fiber that minimizes mode coupling, we achieved 400-gigabits-per-second data transmission using four angular momentum modes at a single wavelength, and 1.6 terabits per second using two OAM modes over 10 wavelengths. These demonstrations suggest that OAM could provide an additional degree of freedom for data multiplexing in future fiber networks.