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基于范德瓦尔斯半导体的超紧刺激极子调制器

Seong Won Lee^1,2, Jong Seok Lee^1,2, Woo Hun Choi^1,2

¹Department of Physics, Korea University, Seoul, 02841, South Korea.

Nature communications

|March 15, 2024

概括

我们开发了一个超紧的光学调制器,使用WS2多层进行高效的数据处理. 这种设备通过调节光强度以最小的足迹来实现高性能光子应用.

科学领域:

光子学和材料科学材料科学
纳米技术和光电子学

背景情况:

随着数据量不断增长,人工智能和高性能计算需要先进的光学调制器.
现有的调制器在集成,尺寸和效率方面面临挑战.

研究的目的:

为了呈现一个超紧的激子-极子马赫-泽恩德 (MZ) 调制器.
为了利用WS2多层进行高效的光调制.

主要方法:

使用WS2多层来创建一个超薄波导,支持激子-极子模式.
使用局部调制激光来改变MZ调制器的一个臂的有效折射率.
通过改变极子子模式属性来实现强度调制.

主要成果:

展示了一种超紧的MZ调制器,其足迹为30μm2,厚度为18nm.
在2微米的超短调节长度上,达到最大调节深度为-6.20dB.
通过局部激发激发来观察到传输强度的调制.

结论:

开发的基于WS2的激子-极子MZ调制器提供了前所未有的紧性和效率.
这项工作为使用范德瓦尔斯材料的高度集成和高效的光子设备开辟了道路.
突出了二维材料在下一代光电子应用中的潜力.

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