Zhou Chen, Wang Yongtian, Huang Lingling
Beijing Engineering Research Center of Mixed Reality and Advanced Display, MIIT Key Laboratory of Photonics Information Technology, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China.
National Key Laboratory on Near-surface Detection, Beijing, 100072, China.
Nanophotonics. 2025 Jan 27;14(8):1021-1044. doi: 10.1515/nanoph-2024-0540. eCollection 2025 Apr.
The burgeoning demand for high-performance computing, robust data processing, and rapid growth of big data necessitates the emergence of novel optical devices to efficiently execute demanding computational processes. The field of meta-devices, such as metamaterial or metasurface, has experienced unprecedented growth over the past two decades. By manipulating the amplitude, phase, polarization, and dispersion of light wavefronts in spatial, spectral, and temporal domains, viable solutions for the implementation of all-optical analog computation and information processing have been provided. In this review, we summarize the latest developments and emerging trends of computational meta-devices as innovative platforms for spatial optical analog differentiators and information processing. Based on the general concepts of spatial Fourier transform and Green's function, we analyze the physical mechanisms of meta-devices in the application of amplitude differentiation, phase differentiation, and temporal differentiation and summarize their applications in image edge detection, image edge enhancement, and beam shaping. Finally, we explore the current challenges and potential solutions in optical analog differentiators and provide perspectives on future research directions and possible developments.
对高性能计算、强大的数据处理以及大数据快速增长的蓬勃需求，使得新型光学器件的出现成为必要，以高效执行严苛的计算过程。超材料或超表面等超构器件领域在过去二十年经历了前所未有的发展。通过在空间、光谱和时间域中操纵光波前的幅度、相位、偏振和色散，为全光模拟计算和信息处理的实现提供了可行的解决方案。在本综述中，我们总结了计算超构器件作为空间光学模拟微分器和信息处理创新平台的最新进展和新兴趋势。基于空间傅里叶变换和格林函数的一般概念，我们分析了超构器件在幅度微分、相位微分和时间微分应用中的物理机制，并总结了它们在图像边缘检测、图像边缘增强和光束整形中的应用。最后，我们探讨了光学模拟微分器当前面临的挑战和潜在解决方案，并对未来的研究方向和可能的发展提供了展望。
