AI 中文总结
研究旨在实现可扩展可重构光子集成电路。基于绝缘体上钽酸锂构建非易失性光子平台，结合低损耗路由、高速电光调制及非易失性相位控制，实现零静态功率偏置控制等，确立其为集成光子学平台，有重要意义。
AI 中文摘要
可扩展的可重构光子集成电路需要低损耗、高速光学控制且无需连续保持功率。然而，广泛使用的热光调谐和持续偏置电光调谐会消耗静态功率并引入热串扰或偏置漂移。本文展示了一种绝缘体上钽酸锂（LTOI）的单片非易失性光子平台。在同成分x切钽酸锂中，写入场去除后开关铁电畴配置得以保留。在同一LTOI平台上，展示了约0.05 - 0.06 dB/cm的波导传播损耗和单独器件中的多级非易失性相位调谐。编程状态在10⁶次写入循环中仍可区分。加权分段电极在π范围内分辨出137个相位位置，模拟相位设置分辨率约为0.007π。还将非易失性相位控制与高速电光调制相结合，实现了>110 GHz调制器的零静态功率偏置控制和非易失性微调后的59.3 dB消光比。在系统层面，图像边缘检测芯片实现了3.48 TOPS/W的测量能量效率。这些结果确立了LTOI作为一个集成光子学平台，它将持久光学可重构性与低损耗路由和高速电光调制相结合。
英文摘要
Scalable reconfigurable photonic integrated circuits require low-loss, high-speed optical control without continuous holding power. Yet widely used thermo-optic tuning and continuously biased electro-optic tuning consume static power and introduce thermal crosstalk or bias drift. Here we demonstrate a monolithic non-volatile photonics platform on lithium tantalate-on-insulator (LTOI). In congruent x-cut lithium tantalate, the switched ferroelectric-domain configuration is retained after the write field is removed. On the same LTOI platform, we demonstrate a waveguide propagation loss of approximately 0.05-0.06 dB/cm and multilevel non-volatile phase tuning in separate devices. The programmed states remain distinguishable through $10^{6}$ write cycles. Weighted segmented electrodes resolve 137 phase positions across a $π$ range, corresponding to an analogue phase-setting resolution of approximately $0.007π$. We further combine non-volatile phase control with high-speed electro-optic modulation to achieve zero-static-power bias control of a >110 GHz modulator and a 59.3 dB extinction ratio after non-volatile trimming. At the system level, an image-edge-detection chip achieves a measured energy efficiency of 3.48 TOPS/W. These results establish LTOI as an integrated photonics platform that combines persistent optical reconfigurability with low-loss routing and high-speed electro-optic modulation.
Comments23 pages, 5 figures, 2 tables
