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arXiv 2203.01431physics.opticsphysics.app-ph
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基于硅波导中二氧化钒ε近零垂直纳米线三腔电光调制器

Electro-optic modulator based on Vanadium dioxide epsilon-near-zero vertical nanowire triple-cavity in Silicon Waveguide

Gregory Tanyi, Christina Lim, Ranjith Unnithan

摘要:

我们提出了一种电光调制器,利用一个阵列的二氧化钒纳米棒工作在近场制度作为有源开关材料集成在硅波导。该调制器利用二氧化钒的绝缘体到金属的转变,以实现19.7 dB/微米的稳健调制深度,具有宽工作波长。使用模拟,我们演示了如何有效的超材料的介电常数可以通过改变纳米棒的几何形状调整到一个接近零的值。本文还提出了一种新颖的六边形阵列设计,实现了低插入损耗,同时保持了较强的调制深度。研究结果为设计具有高工作频率和低插入损耗的超紧凑型调制器提供了参考。

英文摘要:

We present an electro-optic modulator exploiting an array of Vanadium dioxide nanorods operating in the epsilon near regime as the active switching material integrated in a silicon waveguide. The modulator takes advantage of the insulator-to-metal transition of Vanadium dioxide to achieve a robust modulation depth of 19.7 dB/micron with a broad wavelength of operation. Using simulations, we demonstrate how the effective permittivity of the metamaterial can be tuned to a near-zero value by varying the nanorod geometry. The paper also proposes a novel hexagonal array design which achieves low insertion losses while retaining a strong modulation depth. The results provide insight into the design of ultra-compact modulators with high operation frequencies and low insertion losses.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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