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Figure 4 | Nanoscale Research Letters

Figure 4

From: Graphene-based optical modulators

Figure 4

GOM with double-layer graphene at different positions. (a) On the top of the waveguide (reproduced from ref. [35]); (b) in the center of the waveguide (reproduced from ref. [30]); (c) at the bottom of the ridge of the rib waveguide (reproduced from ref. [36]).

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