Progress on Waveguide-Integrated Graphene Optoelectronics

Figure 4

Waveguide-integrated graphene photodetectors. (a) Schematic of the graphene Schottky diode integrated on the SOI waveguide. (b) Schematic of the graphene-on-silicon slot waveguide photodetector. (c) Simulation results of the graphene-on-waveguide absorption coefficients. (d) SEM image of the graphene-on-silicon nitride microring resonator photodetector. (a) is reprinted with permission from [53]. Copyright © 2016 American Chemical Society. (b)-(c) are reprinted with permission from Ref. [54]. Copyright © 2016 Royal Society of Chemistry. (d) is reprinted from [29]. Copyright © 2016 Optical Society of America.

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