Exceptional point of nanocylinder-loaded silicon microring for single nanoparticle detection

Jiewen Li; Jinzhao Wang; Rui Li; Yang Feng; Yanmei Li; Lin Yu; Wanxin Li; Jiaxin Chen; Yunxu Sun; Yong Yao; Xiaochuan Xu

doi:10.1117/12.2613637

4 March 2022 Exceptional point of nanocylinder-loaded silicon microring for single nanoparticle detection

Jiewen Li, Jinzhao Wang, Rui Li, Yang Feng, Yanmei Li, Lin Yu, Wanxin Li, Jiaxin Chen, Yunxu Sun, Yong Yao, Xiaochuan Xu

Author Affiliations +

Proceedings Volume 11979, Frontiers in Biological Detection: From Nanosensors to Systems XIV; 1197903 (2022) https://doi.org/10.1117/12.2613637
Event: SPIE BiOS, 2022, San Francisco, California, United States

Abstract

We demonstrate an EP-based sensor based on exceptional point(EP) of nanocylinders-loaded silicon microring for single particle detection. The EP is implemented by tailoring the spatial phase difference between the two nanocylinders placed close to the microring. When a nanoparticle is adsorbed onto the surface of the silicon microring, the degeneracy of two eigenvectors of the silicon microring is lifted, leading to mode splitting in the transmission spectrum. The wavelength difference of the split-mode is proportional to the square-root of the perturbation. To the best of our knowledge, this is the first sensor leveraging the EP of a silicon microring for single nanoparticle detection

Conference Presentation

Citation Download Citation

Jiewen Li, Jinzhao Wang, Rui Li, Yang Feng, Yanmei Li, Lin Yu, Wanxin Li, Jiaxin Chen, Yunxu Sun, Yong Yao, and Xiaochuan Xu "Exceptional point of nanocylinder-loaded silicon microring for single nanoparticle detection", Proc. SPIE 11979, Frontiers in Biological Detection: From Nanosensors to Systems XIV, 1197903 (4 March 2022); https://doi.org/10.1117/12.2613637

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