激光与光电子学进展, 2019, 56 (20): 202413, 网络出版: 2019-10-22
单介质加载双层石墨烯对称表面等离激元波导的理论分析 
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Theoretical Analysis of Single Dielectric Loaded Two-Sheet Graphene Symmetric Surface Plasmon Waveguide
图 & 表
图 1. DLTGSSPW。(a)理论模型;(b)等效的五层平板波导D1/G/D3/G/D5结构;(c)等效的三层平板波导结构
Fig. 1. DLTGSSPW. (a) Theoretical model; (b) equivalent five-layer planar waveguide structure of D1/G/D3/G/D5; (c) equivalent three-layer planar waveguide structure
图 2. 在w=200 nm,d0=30 nm时,DLTGSSPW中GSPP模的有效折射率随波长的变化。(a)对称模,Re(neff);(b)对称模,Im(neff);(c)反对称模,Re(neff);(d)反对称模,Im(neff)
Fig. 2. Effective refractive index of GSPP mode versus wavelength in DLTGSSPW with w=200 nm and d0=30 nm. (a) Symmetric mode, Re(neff); (b) symmetric mode, Im(neff); (c) anti-symmetric mode, Re(neff); (d) anti-symmetric mode, Im(neff)
图 3. w=200 nm,d0=30 nm时的场分布图。(a) λ=8 μm和(b) λ=10 μm时的3rd阶对称GSPP模; λ=9.6 μm时的1st阶(c)对称和(d)反对称GSPP模
Fig. 3. Mode patterns under w=200 nm and d0=30 nm. 3rd order symmetric GSPP mode at (a) λ=8 μm and (b) λ=10 μm; 1st order (c) symmetric and (d) anti-symmetric GSPP modes at λ=9.6 μm
图 4. 在λ=8 μm,d0=30 nm时,DLTGSSPW中GSPP模的有效折射率随介质条宽度的变化。(a)对称模,Re(neff);(b)对称模,Im(neff);(c)反对称模,Re(neff);(d)反对称模,Re(neff)
Fig. 4. Effective refractive index of GSPP mode versus dielectric bar width in DLTGSSPW with λ=8 μm and d0=30 nm. (a) Symmetric mode, Re(neff); (b) symmetric mode, Im(neff); (c) anti-symmetric mode, Re(neff); (d) anti-symmetric mode, Im(neff)
图 5. 在λ=8 μm,d0=30 nm时,DLTGSSPW中2nd对称GSPP模的电场分布图。 (a) w=80 nm;(b) w=150 nm
Fig. 5. Mode patterns of 2nd order symmetric GSPP mode in DLTGSSPW with λ=8 μm and d0=30 nm.(a) w=80 nm; (b) w=150 nm
图 6. λ=8 μm,w=200 nm时DLTGSSPW中GSPP模的有效折射率随介质条高度的变化。(a)对称模,Re(neff);(b)对称模,Im(neff);(c)反对称模,Re(neff);(d)反对称模,Im(neff)
Fig. 6. Effective refractive index of GSPP mode versus dielectric bar height in DLTGSSPW with λ=8 μm and w=200 nm. (a) Symmetric mode, Re(neff); (b) symmetric mode, Im(neff); (c) anti-symmetric mode, Re(neff); (d) anti-symmetric mode, Im(neff)
图 7. λ=8 μm,w=200 nm时 DLTGSSPW中的电场分布图。 (a) 1st阶对称GSPP模,d0=10 nm;(b) 1st阶反对称GSPP模,d0=10 nm;(c) 1st阶对称GSPP模,d0=100 nm; (d) 1st阶反对称GSPP模,d0=100 nm;(e) 4th对称GSPP模,d0=20 nm;(f) 4th阶对称GSPP模,d0=80 nm
Fig. 7. Mode patterns in DLTGSSPW with w=200 nm and λ=8 μm. (a) 1st order symmetric GSPP mode, d0=10 nm; (b) 1st order anti-symmetric GSPP mode, d0=10 nm; (c) 1st order symmetric GSPP mode, d0=100 nm; (d) 1st order anti-symmetric GSPP mode, d0=100 nm; (e) 4th order symmetric GSPP mode, d0=20 nm; (f) 4th order symmetric GSPP mode, d0=80 nm
李勇, 张惠芳, 吴琼, 何英, 王燕. 单介质加载双层石墨烯对称表面等离激元波导的理论分析[J]. 激光与光电子学进展, 2019, 56(20): 202413. Yong Li, Huifang Zhang, Qiong Wu, Ying He, Yan Wang. Theoretical Analysis of Single Dielectric Loaded Two-Sheet Graphene Symmetric Surface Plasmon Waveguide[J]. Laser & Optoelectronics Progress, 2019, 56(20): 202413.
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