AI 中文总结
研究磁子波导中的频分复用，通过全电激发和检测，利用电感天线将两个微波信号耦合到自旋波导，经实验、理论分析及微磁模拟，证明不同频率自旋波能在线性区域无相互作用地共存，为磁子计算等架构的频分复用提供证据。
AI 中文摘要
频分复用是基于波的信息处理的关键功能，能使多个信息通道在同一物理介质中共存。本文通过全电激发和检测，对CoFeB波导中的自旋波复用进行了实验研究。两个独立产生的微波信号通过电感天线同时耦合到同一自旋波导中，并使用宽带矢量网络分析仪测量进行表征。单通道和复用操作下获得的传输光谱显示出良好的一致性，表明不同频率和波长的自旋波在线性区域内同时传播且无明显相互作用。理论分析和微磁模拟进一步证实了这一现象，结果为独立自旋波通道可在单个波导中共存提供了直接实验证据，支持了未来磁子计算和微波信号处理架构中频率复用的实现。
英文摘要
Frequency-division multiplexing is a key functionality for wave-based information processing, enabling multiple information channels to coexist within the same physical medium. Here, we experimentally investigate spin-wave multiplexing in a CoFeB waveguide using all-electrical excitation and detection. Two independently generated microwave signals are simultaneously coupled into the same spin-wave waveguide through inductive antennas and characterized using broadband vector network analyzer measurements. The transmission spectra obtained under single-channel and multiplexed operation exhibit excellent agreement, demonstrating that spin waves with different frequencies and wavelengths propagate simultaneously without measurable interaction in the linear regime. The observation is confirmed using both dual-sweep and sweep-plus-single-tone excitation schemes. A theoretical analysis based on linear superposition and phase-sensitive detection explains the absence of observable inter-channel interference for independent microwave sources. Micromagnetic simulations further confirm that the amplitudes and wavevectors of the individual spin-wave modes remain unchanged during co-propagation, demonstrating the absence of interaction over the entire propagation distance. The results provide direct experimental evidence that independent spin-wave channels can coexist in a single waveguide and support the implementation of frequency-division multiplexing in future magnonic computing and microwave signal-processing architectures.
Comments12 pages, 4 figures
