Shaoliang Wang, Ziwei Ye, Xiliang Peng, Ran Hao. Study of Highly-Efficient Composite Waveguide Modulator Based on Graphene[J]. Acta Optica Sinica, 2018, 38(5): 0513003
- Acta Optica Sinica
- Vol. 38, Issue 5, 0513003 (2018)
Fig. 1. Permittivity of graphene versus chemical potential
Fig. 2. Structural diagram of composite waveguide modulator based on graphene. (a) 2D cross section; (b) 3D model
Fig. 3. Propagation loss of composite waveguide and chemical potential of graphene versus bias voltage
Fig. 4. (a) Effect of slit width on modulation efficiency; (b) effect of Si waveguide width on modulation efficiency
Fig. 5. Structural diagram and coupling efficiency of tapered coupler
Fig. 6. (a)(b) Optical energy transmission distribution of modulator and (c)(d) optical mode distribution of output waveguide under different chemical potentials of graphene
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