近日，新加坡国立大学Chengkuo Lee团队实现了使用像素化纳米光电机械光栅的超紧凑片上光谱整形。这一研究成果发表在2025年8月21日出版的《科学》杂志上。

通过提供无与伦比的光谱效率和网络灵活性，动态和任意塑造光谱的能力将彻底改变许多光子系统。然而，大多数现有的光学元件具有严格的光谱功能和有限的可调性，阻碍了紧凑和快速的光谱整形。

研究组介绍了一种像素化纳米光电（NOEM）光栅，它利用机电诱导的对称破缺来精确地控制光栅耦合强度，从而产生小型化（~0.007平方毫米）的片上光谱整形器。研究组演示了任意光谱响应的光栅像素合成，并通过集体纳米级静电扰动实现了快速（10纳秒）、高对比度（100分贝）、波长选择性切换。他们的像素化NOEM光栅以超紧凑的片上方式提供了卓越的光谱操作能力，为下一代光信息网络，计算架构等提供了前景。

附：英文原文

Title: Ultracompact on-chip spectral shaping using pixelated nano-opto-electro-mechanical gratings

Author: Weixin Liu, Siyu Xu, Chengkuo Lee

Issue&Volume: 2025-08-21

Abstract: The ability to shape light spectra dynamically and arbitrarily would revolutionize many photonic systems by offering unparalleled spectral efficiency and network flexibility. However, most existing optical components have rigid spectral functionalities with limited tunability, hindering compact and fast optical spectral shaping. We introduce a pixelated nano-opto-electro-mechanical (NOEM) grating that exploits electromechanically induced symmetry breaking for precise, pixel-level control of grating coupling strength, yielding a miniaturized (~0.007 square millimeters) on-chip spectral shaper. We demonstrate the synthesis of grating pixels for arbitrary spectral responses, and we achieved rapid (<10 nanoseconds), high-contrast (>100 decibels), wavelength-selective switching through collective, nanometer-scale electrostatic perturbations. Our pixelated NOEM grating delivers exceptional spectral manipulation capabilities in an ultracompact, on-chip manner, offering prospects for next-generation optical information networks, computing architectures, and beyond.

DOI: adu8492

Source: https://www.science.org/doi/10.1126/science.adu8492