Tunable Goos–Hänchen Shift in Symmetric Graphene-Integrated Bragg Gratings
We theoretically analyze the spatial Goos-Hänchen (GH) shifts in symmetric Graphene-Integrated Bragg Gratings (GIBGs), where monolayer graphene arrays act as tunable input/output couplers, and a periodically inserted dielectric layer forms a resonant cavity. By optimizing the cavity design, we achieve a GH shift of 1766λ, surpassing the conventional limit of hundreds of wavelengths under single-parameter tuning. The direction and magnitude can be actively controlled by the graphene's chemical potential, grating geometry, or dielectric thickness. This mechanism may enable high-sensitivity refractive index sensors or adaptive optical devices.
Authors
- Jefferson Zhe Liu (ORCID: https://orcid.org/0000-0002-5282-7945)
- Hao Ni (ORCID: https://orcid.org/0000-0002-9281-2369)
- Miaomiao Zhao (ORCID: https://orcid.org/0009-0001-4010-7676)
- Q. K. Zhang (ORCID: https://orcid.org/0000-0002-2302-2822)
- Hao Wu (ORCID: https://orcid.org/0000-0003-1494-0848)
- Zhongli Qin (ORCID: https://orcid.org/0000-0002-6583-8459)
- Dong Zhao (ORCID: https://orcid.org/0000-0002-0874-1749)
- Fangmei Liu (ORCID: https://orcid.org/0000-0002-7430-4950)
- Xiaoling Chen (ORCID: https://orcid.org/0000-0003-0368-1537)
- Dong Zhong
- Liu Fanghua (ORCID: https://orcid.org/0000-0002-5243-3460)
Institutions
- Hubei University of Science and Technology (CN)
Publication Details
- Journal
- Micromachines
- Published
- 2025-10-20
- DOI
- https://doi.org/10.3390/mi16101184
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Hubei University
- Hubei University of Science and Technology