On-Chip Cascaded Metasurfaces for Visible Wavelength Division Multiplexing and Color-Routing Meta-Display

作     者：Rao, Runlong Shi, Yangyang Wang, Zejing Wan, Shuai Li, Zhongyang 

作者机构：Wuhan Univ Elect Informat Sch Wuhan 430072 Peoples R China Wuhan Univ Sch Microelect Wuhan 430072 Peoples R China Wuhan Inst Quantum Technol Wuhan 430206 Peoples R China 

出 版 物：《NANO LETTERS》 (Nano Lett.)

年 卷 期：2025年第25卷第6期

页      面：2452-2458页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China [12204360, 12474391] National Natural Science Foundation of China Wuhan Knowledge Innovation Special Project Center for NanoScience and Nanotechnology at Wuhan University 

主　　题：On-chip metasurfaces Wavelength divisionmultiplexing Wavelength selectivity Color-routingdisplay Waveguides 

摘      要：Integrating metasurfaces on-chip offers a promising strategy for modulating and extracting guided waves, suggesting tremendous applications in compact wearable devices. However, despite the full acquisition of on-chip manipulation of optical parameters, including phase, amplitude, and polarization, the functionality of on-chip metasurfaces remains limited by the lack of wavelength selectivity. Here, an on-chip approach to differentiate wavelength components is proposed in the visible regime for wavelength division multiplexing (WDM). Through horizontally cascading on-chip meta-atoms with structural dimension variation and optimization, different wavelength components propagating along the waveguide would be selectively extracted, realizing meta-demultiplexing functionality. More intriguingly, color nanoprinting images or holographic displays can be correspondingly enabled. This approach surpasses conventional free-space meta-devices in terms of exhibiting improved wavelength-selective allocation and eliminating the energy waste caused by spatial multiplexing. We envision that such an on-chip cascading strategy paves the way for next-generation WDM devices in photonic integrated circuits and wearable miniature meta-displays.