中心与美国UCSB John Bowers教授课题组关于高效率非线性硅基铝镓砷片上的合作工作 “On-chip high-efficiency wavelength multicasting of PAM3/PAM4 signals using low-loss AlGaAs-on-insulator nanowaveguides” 近期被美国光学学会OSA 主页选为Highlighted Articles from OSA Journals （Spotlight on Optics）。

点评专家认为这个工作是AlGaAs-o-I的非线性光学材料平台从器件基础到系统部署迈出的关键的一步。这项工作展示了AlGaAs-o-I非线性光学元件在电信应用环境中的性能，代表了从基础设备开发到网络系统部署的重要进步。近年来，亚微米截面尺寸的高质量AlGaAs-o-I波导已被证明具有低光损耗和高效的非线性性能，为AlGaAs材料平台的全光信号处理提供了长期以来的潜力。作者用一个简单的光纤耦合波导芯片在C波段实现了高数据率脉冲幅度调制（PAM3/PAM4）多播。这清楚地表明了混合材料平台的实用性，以及在实际光信号处理系统中集成芯片级非线性光学的部署可能性。

点评原文：AlGaAs-on-insulator (AlGaAs-o-I) nonlinear optics takes a key step from device fundamentals towards systems deployment.  This work demonstrates the performance of AlGaAs-o-I nonlinear optical elements in a telecommunications application setting, representing a crucial advance from fundamental device development towards deployment in network systems.  Recently, high quality AlGaAs-o-I waveguides with sub-micron cross-sectional dimensions have been demonstrated with low optical loss and efficient non-linear performance, delivering on the long heralded potential of the AlGaAs material platform for all-optical signal processing.  The authors demonstrate high-data rate pulse-amplitude modulation (PAM3/PAM4) multicasting in the C-band using a simple fiber coupled waveguide chip.  This is a clear indication of the utility of the hybrid material platform, and the route towards integration of chip-scale nonlinear optics in real optical signal processing systems.

点评链接：

https://www.osapublishing.org/spotlight/summary.cfm?id=434288.