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Ultra-high-speed graphene optical modulator design based on tight field confinement in a slot waveguide
2018
Applied Physics Express
We present a design of an ultra-fast in-line graphene optical modulator on a silicon waveguide with a bandwidth exceeding 100 GHz, very small power consumption below 15 fJ/bit, and insertion loss of 1.5 dB. This is achieved by utilizing the transverse-electric-mode silicon slot to tailor the overlap of graphene electrodes, thus significantly reducing the capacitance of the device while maintaining a low insertion loss and using conservative estimates of the graphene resistance. Our design is
doi:10.7567/apex.11.065102
fatcat:qk6mwldiqfgv5knvfqdukphhey