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通过拓限制在光纤中的信息通路进行缩放

Zelin Ma¹, Poul Kristensen², Siddharth Ramachandran¹

¹Boston University, Boston, MA 02215, USA.

Science (New York, N.Y.)

|April 20, 2023

概括

研究人员使用轨道角动量展示了一种新的光纤光导方法. 这种方法可以实现高容量数据传输,减少信号损失和交叉通话,为未来的网络铺平道路.

科学领域:

光学和光学
信息技术

背景情况:

光纤容量受到模式混合的限制,阻碍了数据传输和量子网络的发展.
目前的方法难以有效地扩展空间模式计数.

研究的目的:

探索用于增强光纤空间模式计数可扩展性的替代光导方法.
克服高容量通信中扰动模式混合的局限性.

主要方法:

使用光的轨道角动量创建一个离心屏障自导.
在常规禁止的模式中传输光线以尽量减少模式混合.

主要成果:

实现了大约50个低损耗模式的千米长传输.
已证实低至45分贝/公里的交叉声.
在130纳米的光谱窗口中获得了大约800平方微米的模式区域.

结论:

新的光导系统有效地减少了模式的混合.
这种方法在经典和量子网络中为增加每光子的信息含量提供了一个有前途的解决方案.
在光纤容量和能源效率方面取得重大进展.

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