Zhou Feng, Yan Siqi, Zhou Hailong, Wang Xu, Qiu Huaqing, Dong Jianji, Zhou Linjie, Ding Yunhong, Qiu Cheng-Wei, Zhang Xinliang
Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, 430074, Wuhan, China.
Department of Photonics Engineering, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark.
Nat Commun. 2019 Jun 20;10(1):2726. doi: 10.1038/s41467-019-10521-5.
Temporal cloaks have aroused tremendous research interest in both optical physics and optical communications, unfolding a distinct approach to conceal temporal events from an interrogating optical field. The state-of-the-art temporal cloaks exhibit picosecond-scale and static cloaking window, owing to significantly limited periodicity and aperture of time lens. Here we demonstrate a field-programmable silicon temporal cloak for hiding nanosecond-level events, enabled by an integrated silicon microring and a broadband optical frequency comb. With dynamic control of the driving electrical signals on the microring, our cloaking windows could be stretched and switched in real time from 0.449 ns to 3.365 ns. Such a field-programmable temporal cloak may exhibit practically meaningful potentials in secure communication, data compression, and information protection in dynamically varying events.
时间斗篷在光学物理和光通信领域都引起了巨大的研究兴趣，为从探测光场中隐藏时间事件开辟了一种独特的方法。由于时间透镜的周期性和孔径受到显著限制，目前最先进的时间斗篷呈现皮秒级和静态的隐身窗口。在此，我们展示了一种现场可编程的硅基时间斗篷，用于隐藏纳秒级事件，它由集成的硅微环和宽带光学频率梳实现。通过对微环上驱动电信号的动态控制，我们的隐身窗口可以实时拉伸并从0.449纳秒切换到3.365纳秒。这种现场可编程的时间斗篷在动态变化事件的安全通信、数据压缩和信息保护方面可能展现出实际有意义的潜力。
