研究目的
Investigating the manipulation of the angular momentum (AM) of photons in nanophotonic waveguides, especially in the Terahertz regime, using a graphene hybrid waveguide.
研究成果
The proposed graphene hybrid plasmonic waveguide enables dynamic control of the angular momentum of light in the Terahertz regime, offering potential applications in compact on-chip devices for bio-sensing and quantum information processing. The study demonstrates the feasibility of using graphene's tunable properties to manipulate light's polarization and OAM, paving the way for advanced integrated photonic devices.
研究不足
The study is limited by the simulation-based approach, which may not fully capture all real-world physical phenomena. Additionally, the practical fabrication of the proposed waveguide structure may present challenges.
1：Experimental Design and Method Selection:
The study employs a graphene hybrid plasmonic waveguide (GHPW) to manipulate the AM of photons. The methodology includes the use of finite difference time domain method (FDTD) for numerical analysis.
2：Sample Selection and Data Sources:
The samples include a few-layer graphene sheet and dielectric materials (GaAs and HDPE). Data is acquired through simulation using Lumerical FDTD Solutions.
3：List of Experimental Equipment and Materials:
The equipment includes a simulation setup using Lumerical FDTD Solutions. Materials include graphene, GaAs, HDPE, gold electrode, and doped-silicon substrate.
4：Experimental Procedures and Operational Workflow:
The process involves simulating the propagation of light through the GHPW, analyzing the birefringence effect, and evaluating the conversion of quasi-linear modes to quasi-circular modes.
5：Data Analysis Methods:
The analysis includes calculating the effective indices of different waveguide sections and evaluating the polarization state and OAM field distribution of the output beams.
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