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Most graphene electro-optic modulators based on the electro-refractive modulation are composed of Mach-Zehnder interferometer or microring resonator structures and have a relative compact size comparing with dielectric ones. To further… Click to show full abstract
Most graphene electro-optic modulators based on the electro-refractive modulation are composed of Mach-Zehnder interferometer or microring resonator structures and have a relative compact size comparing with dielectric ones. To further shrink the footprint, we use the localized surface plasmon resonance of a chain of three metal disks to realize a submicron graphene modulator, whose length can be reduced to less than 1 μm. The proposed graphene modulator has an extinction ratio of 5.5 dB with a length of only 740 nm. And the insertion loss, 3-dB bandwidth, and power consumption of the modulator are 1.9 dB, 83.4 GHz, and 8.55 fJ/bit respectively.
Journal Title: Plasmonics
Year Published: 2019
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