Dynamically tunable photonic manipulation and sensing in graphene array-driven Bragg gratings

IF 4.1 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

iScience Pub Date : 2025-06-09 DOI:10.1016/j.isci.2025.112848

Xiaoling Chen , Junjie Dong , Dong Zhao , Hao Ni , Fanghua Liu , Hao Wu , Miaomiao Zhao , Junfu Yang

引用次数: 0

Abstract

This study proposes a dynamically tunable optical sensor (DFBG-GA) based on the integration of a distributed feedback Bragg grating (DFBG) and a graphene array (GA). Through theoretical analysis and numerical simulations, we demonstrate that the transmission spectrum of DFBG-GA exhibits prominent resonance peaks, the linewidth and wavelength of which can be dynamically tuned by adjusting the graphene chemical potential, the number of Bragg grating periods, and the cavity thickness. Experimental results reveal that the structure achieves a refractive index sensitivity of up to 10,430 nm/RIU, with a strong linear response (R² > 0.98). Furthermore, the average figure of merit (Δλ/Δμ) for graphene chemical potential tuning reaches 9.5904 μm/eV, indicating efficient dynamic modulation capabilities. These findings suggest that this architecture has promising potential for applications in biosensing, environmental monitoring, and related fields.

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石墨烯阵列驱动Bragg光栅的动态可调谐光子操纵和传感

本研究提出了一种基于分布式反馈布拉格光栅（DFBG）和石墨烯阵列（GA）集成的动态可调谐光学传感器（DFBG-GA）。通过理论分析和数值模拟，我们证明了DFBG-GA的透射光谱具有突出的共振峰，其线宽和波长可以通过调节石墨烯化学势、布拉格光栅周期数和腔厚来动态调节。实验结果表明，该结构的折射率灵敏度高达10430 nm/RIU，具有较强的线性响应(R2 >；0.98)。此外，石墨烯化学势调谐的平均优值（Δλ/Δμ）达到9.5904 μm/eV，表明其具有高效的动态调制能力。这些研究结果表明，该结构在生物传感、环境监测等相关领域具有广阔的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

iScience Multidisciplinary-Multidisciplinary

CiteScore

7.20

自引率

1.70%

发文量

1972

审稿时长

6 weeks

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