光学学报, 2018, 38 (2): 0223002, 网络出版: 2018-08-30
涂覆石墨烯的并行电介质纳米线中的模式分析 
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Analysis of Modes in Graphene-Coated Parallel Dielectric Nanowires
图 & 表
图 1. 涂覆石墨烯的并行电介质纳米线的横截面示意图
Fig. 1. Cross-section diagram of graphene-coated parallel dielectric nanowires
图 2. 当费米能分别为0.4,0.5,0.6 eV时,石墨烯电导率的(a)实部和(b)虚部与工作频率之间的关系
Fig. 2. (a) Real part and (b) imaginary part of the conductivity of graphene as functions of the operating frequency while the Fermi energies are 0.4, 0.5, 0.6 eV, respectively
图 3. f=51.579 THz, ρ=100 nm, d=50 nm, EF=0.5 eV时,最低阶的6个模式的场分布图。(a)~(f)为纵向电场分布图; (g)~(l)为电场强度分布图
Fig. 3. Field distributions of the six lowest order modes when f=51.579 THz, ρ=100 nm, d=50 nm, EF=0.5 eV. (a)~(f) are the longitudinal electric field distributions; (g)~(l) are the electric field intensity distributions
图 4. ρ=100 nm, d=50 nm, EF=0.5 eV时, (a)有效折射率和(b)传播长度随工作频率的变化关系图
Fig. 4. Dependence of (a) effective refractive index and (b) propagation length on the operating frequency when ρ=100 nm, d= 50 nm, EF= 0.5 eV
图 5. 工作频率分别(a) 35 THz和(b) 55 THz时, mode 1的纵向电场的分布图
Fig. 5. Distribution of the longitudinal electric field of mode 1 with the operating frequency of (a) 35 THz and (b) 55 THz
图 6. f=51.579 THz, ρ=100 nm, EF=0.5 eV时,(a)有效折射率和(b)传播长度随间距d的变化关系图
Fig. 6. Dependence of (a) effective refractive index and (b) propagation length on the spacing d when f= 51.579 THz, ρ=100 nm, EF=0.5 eV
图 7. 间距d分别 (a)10 nm、 (b) 20 nm和(c) 75 nm时, mode 1的纵向电场的分布图
Fig. 7. Distribution of the longitudinal electric field of mode 1 with the spacing d of (a) 10 nm, (b) 20 nm and (c) 75 nm
图 8. d=50 nm, f=51.579 THz, EF=0.5 eV时,(a)有效折射率和(b)传播长度随半径ρ的变化关系图
Fig. 8. Dependence of (a) effective refractive index and (b) propagation length on radius ρ when d=50 nm, f=51.579 THz, EF=0.5 eV
图 9. 半径ρ 分别 (a) 30 nm、 (b) 80 nm时, mode 1的纵向电场的分布图
Fig. 9. Distribution of the longitudinal electric field of mode 1 when ρ=(a) 30 nm and (b) 80 nm, respectively
图 10. ρ=100 nm, d=50 nm, f=51.579 THz时,(a)有效折射率和(b)传播长度随费米能EF的变化关系图
Fig. 10. Dependence of (a) effective refractive index and (b) propagation length on the Fermi energy EF when ρ=100 nm, d=50 nm, f=51.579 THz
表 1最低阶模式
Table1. Lowest order modes
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彭艳玲, 薛文瑞, 卫壮志, 李昌勇. 涂覆石墨烯的并行电介质纳米线中的模式分析[J]. 光学学报, 2018, 38(2): 0223002. Yanling Peng, Wenrui Xue, Zhuangzhi Wei, Changyong Li. Analysis of Modes in Graphene-Coated Parallel Dielectric Nanowires[J]. Acta Optica Sinica, 2018, 38(2): 0223002.
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