Feng Zhou, Chen Liang
https://www.spiedigitallibrary.org/journals/Journal-of-Nanophotonics/volume-13/issue-1/016008/Highly-tunable-and-broadband-graphene-ring-modulator/10.1117/1.JNP.13.016008.short?SSO=1
We propose a ring modulator based on few-layer
graphene with large tunability and modulation efficiency. Compared with
monolayer graphene, a few-layer graphene structure can enhance the tunability
linearly. In the proposed structure, the shift of resonance wavelength can be
enlarged to 20.3 nm, implying the proposed modulator can achieve the
bandwidth of 100 GHz. In addition, a large extinction ratio of
15.5 dB and a good temperature tolerance of 45 K can be obtained in
this modulator.
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