Fiber optic SPR sensor based on the heterostructure of MoS2/WS2 with high figure of merit

Jianying Jing; Kun Liu; Junfeng Jiang; Tianhua Xu; Shuang Wang; Jinying Ma; Zhao Zhang; Wenlin Zhang; Tiegen Liu

doi:10.1117/12.2616434

8 July 2022 Fiber optic SPR sensor based on the heterostructure of MoS₂/WS₂ with high figure of merit

Jianying Jing, Kun Liu, Junfeng Jiang, Tianhua Xu, Shuang Wang, Jinying Ma, Zhao Zhang, Wenlin Zhang, Tiegen Liu

Proceedings Volume 12283, 2021 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices; 1228305 (2022) https://doi.org/10.1117/12.2616434
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only

Abstract

This paper proposes a fiber optic surface plasmon resonance (SPR) sensor based on the heterostructure of MoS₂/WS₂. Transition metal dichalcogenides (TMDCs) have been widely studied due to their high carrier mobility, excellent photoelectric properties and good biocompatibility. A heterostructure is constructed by two types of TMDCs (MoS₂/WS₂) and is used to improve the performance of the Ag layer coated fiber optic SPR sensor. The heterostructure film increases the integral of the electric field intensity on the surface of the sensor, thus improving the sensitivity of the sensor. The finite element analysis shows that the sensitivity of the sensor is as high as 3127.18 nm/RIU and the figure of merit is up to 70.04 RIU-1. The proposed sensor exhibits promising potential in the field of biochemical detection.

Citation Download Citation

Jianying Jing, Kun Liu, Junfeng Jiang, Tianhua Xu, Shuang Wang, Jinying Ma, Zhao Zhang, Wenlin Zhang, and Tiegen Liu "Fiber optic SPR sensor based on the heterostructure of MoS₂/WS₂ with high figure of merit", Proc. SPIE 12283, 2021 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices, 1228305 (8 July 2022); https://doi.org/10.1117/12.2616434

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