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使用相变材料对表面等离子体传播方向进行多层次的动态控制

Xianghua Liu^1,2, Ruxue Wang^1,2, Ruotian Lu^1,2

¹National Key Laboratory of Materials for Integrated Circuits, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, China. snow321@mail.sim.ac.cn.

|February 24, 2026

概括

研究人员开发了一种新的方法来控制使用相变材料的表面等离子体生成. 这使得更快,更小的光学交换机和调制器能够用于先进的AI数据传输.

科学领域:

光子学是指光子学的使用方法.
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

人工智能驱动的数据传输需求需要更小的光学设备.
表面等离子体提供纳米级光操纵,克服了集成光子芯片的衍射极限.

研究的目的:

为了证明使用相变材料对等离子体生成的积极操纵.
为了使表面等离子极子 (SPPs) 的可调节的定向激发.

主要方法:

不对称的纳米槽与相变材料Ge2Sb2Te5.5的集成.
利用Ge2Sb2Te5的无形和晶体相进行光学特性调制.
展示SPP启动的多层次主动控制.

主要成果:

通过相位过渡实现SPPs可调节的定向激发.
证明了15dB的高灭绝比 (ER) 对比.
在单向和双向操作中实现了高调制效率 (高达96.8%) 的纳秒开关.

结论:

开发的方法使SPP启动的多层次主动控制成为可能.
这种方法为超紧的等离子体设备,如调制器和光学开关铺平了道路.
对于高密度集成光子芯片的光子组件微型化的进步.

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