光学学报, 2017, 37 (11): 1124002, 网络出版: 2018-09-07
石墨烯TE模表面等离子体波和表面等离子体波导的特性 
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Properties of Graphene TE Mode Surface Plasmons and Surface Plasmon Waveguides
图 & 表
图 2. 不同化学势下石墨烯的电导率随频率的变化。(a)实部;(b)虚部
Fig. 2. Change of graphene conductivity with frequency at different chemical potentials. (a) Real part; (b) imaginary part
图 3. 不同化学势下悬空的石墨烯结构中TE模色散随频率的变化。(a)有效折射率neff;(b) Im(β/k0)
Fig. 3. Dispersion of TE mode in a suspended graphene structure varies with frequency at different chemical potentials. (a) Effective refractive index neff; (b) Im(β/k0)
图 4. ε1=ε2时双层介质结构中TE模色散随频率的变化(Si、SiC、SiO2介质的折射率分别为3.67,2.57,1.53;μc=0.5 eV)。(a) neff; (b) Im(β/k0)
Fig. 4. Dispersion of TE mode varies with frequency in a two-layer dielectric structure as ε1=ε2 (the refractive indices of Si, SiC and SiO2 are 3.67, 2.57 and 1.53, respectively; μc=0.5 eV). (a) neff; (b) Im(β/k0)
图 5. ε1≈ε2时TE模色散随频率的变化[ε1(SiO2)=2.3409;ε2(SiO2)分别为2.3409,2.3410,2.3411,2.3412;μc=0.5 eV]。(a) neff; (b) Im(β/k0)
Fig. 5. Dispersion of TE mode varies with frequency as ε1≈ε2 [ε1(SiO2)=2.3409; ε2(SiO2) are 2.3409, 2.3410, 2.3411, and 2.3412, respectively; μc=0.5 eV]. (a) neff; (b) Im(β/k0)
图 6. 波导中a层和b层分界面有无添加石墨烯时TE模色散随频率的变化(n3=1.460,μc=0.5 eV)。(a) neff; (b) Im(β/k0)
Fig. 6. Dispersion of TE mode varies with frequency in the waveguide with and without graphene in the interfaces a and b (n3=1.460, μc=0.5 eV). (a) neff; (b) Im(β/k0)
图 7. 基底介质波导中b层分界面有无添加石墨烯且n3不同时TE模色散随频率的变化(μc=0.5 eV)。 (a) neff; (b) Im(β/k0)
Fig. 7. Dispersion of TE mode varies with frequency for different dielectric constant n3 in substrate waveguide with and without graphene in the interface b (μc=0.5 eV). (a) neff; (b) Im(β/k0)
万鹏, 杨翠红. 石墨烯TE模表面等离子体波和表面等离子体波导的特性[J]. 光学学报, 2017, 37(11): 1124002. Peng Wan, Cuihong Yang. Properties of Graphene TE Mode Surface Plasmons and Surface Plasmon Waveguides[J]. Acta Optica Sinica, 2017, 37(11): 1124002.
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