Enhancement in sensitivity of guided-wave surface plasmon resonance sensor using graphene

Chong Yue; Yaopu Lang; Xinglin Zhou; Qinggang Liu

doi:10.1117/12.2539020

12 March 2020 Enhancement in sensitivity of guided-wave surface plasmon resonance sensor using graphene

Chong Yue, Yaopu Lang, Xinglin Zhou, Qinggang Liu

Proceedings Volume 11440, 2019 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices; 1144002 (2020) https://doi.org/10.1117/12.2539020
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

A guided-wave surface plasmon resonance based sensor using graphene layer for detect the biomolecules has been analyzed. The use of waveguide layer between the gold film and graphene significantly improves the penetration depth and increases the sensitivity, then graphene layer is used to enhance the adsorption of the biomolecules. The thickness and materials of waveguide layer along with the number of graphene layer have been optimized to achieve the best performance of the sensor in terms of sensitivity. The highest sensitivity with 228.8°/RIU is obtained for visible wavelength with optimized thickness of gold and waveguide layer as 45nm and 10nm respectively while the materials of waveguide layer is chosen as zinc oxide and the optimum number of graphene layers is 2.We believe that this sensor could find potential applications in biological detection.

Citation Download Citation

Chong Yue, Yaopu Lang, Xinglin Zhou, and Qinggang Liu "Enhancement in sensitivity of guided-wave surface plasmon resonance sensor using graphene", Proc. SPIE 11440, 2019 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices, 1144002 (12 March 2020); https://doi.org/10.1117/12.2539020

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