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2DM研究文章|利用集成在硅波导上的单层 MoS2实现低损耗相位调制

21 Nov 2025 gabriels

Two dimensional (2D) materials are at the forefront of research in integrated modulators. However, achieving pure phase modulation with low insertion loss remains challenging in 2D material modulators. This work explores phase modulators based on monolayer MoS₂ integrated on a Si photonic platform. We investigated the electro-optical response of MoS₂ using two device architectures: a monolayer MoS2 integrated on a doped Si waveguide and a MoS₂–Al₂O₃–MoS₂ capacitor integrated on an undoped Si waveguide. At a wavelength of 1550 nm, the integration of MoS₂ in both architectures induces minimal optical insertion losses. Specifically, the single-layer device on a doped silicon waveguide achieves a phase modulation efficiency of 0.53 V·cm, with propagation losses dominantly originating from the doped silicon (108 dB cm^-1). The MoS₂–Al₂O₃–MoS₂ modulator has a low propagation loss of 6.4 dB cm^-1 and modulation efficiency of 1 V·cm. Depending on the resistance–capacitance constant, a trade-off exists between achievable modulation efficiency, electro-optical bandwidth, and insertion loss. The strong and lossless electro-refractive response makes MoS₂-based phase modulators suitable for a variety of applications such as light detection and ranging, optical switching, quantum and optical neural networks, and coherent optical communication.

文章介绍

Low-loss phase modulation using a MoS₂ monolayer integrated on silicon waveguides

Cheng-Han Wu, Tom Reep, Yishu Huang, Steven Brems, Christian Haffner, Cedric Huyghebaert, Bart Kuyken, Joris Van Campenhout, Marianna Pantouvaki, Dries Van Thourhout and Yujie Guo

通讯作者：

Yujie Guo，比利时根特大学、比利时微电子研究中心

期刊介绍

2D Materials

2024年影响因子: 4.3 Citescore: 9.3
2D Materials（2DM）创刊于2014年，是国际上二维材料领域的第一个学术期刊，是中国科协高质量科技期刊一区期刊，旨在报道二维材料研究及应用领域最具创新性和影响力的前沿科研成果，促进二维材料领域的学术成果交流。期刊立足于多学科视角，致力于涵盖石墨烯及其他二维材料相关研究的各个方面，包括二维材料的制备、表征、物理、性质研究及器件、能源、催化、复合材料等应用。
期刊主编为中国科学院金属研究所任文才研究员，国家杰出青年科学基金获得者，国家重点研发计划项目首席科学家。主要从事石墨烯及其他新型二维材料的制备、物性及光电、储能、热管理、膜技术等应用研究。在Science、Nature Materials等期刊发表主要论文200多篇，被SCI他引4万多次，是科睿唯安公布的全球高被引科学家。获发明专利100余项，孵化了3家高技术企业。获国家自然科学二等奖3项（第一完成人2项）、辽宁省自然科学一等奖、何梁何利科技创新奖、全国创新争先奖等。