We report on a silicon-organic hybrid modulator based on a Mach–Zehnder interferometer (MZI) operating at 10 Gbit/s with an energy consumption of 320 fJ/bit. The device consists of a striploaded slot waveguide covered with an electro-optic polymer cladding. The MZI modulator is poled to be driven in push–pull operation by a single coplanar RF line. Our nonlinear coefficientr₃₃=15~ pm/Vin combination with an 80 nm narrow slot enables RF peak-to-peak drive voltages as low as 800mVₚₚto suffice for an extinction ration of 4.4 dB for a 1.5 mm long modulator.
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Palmer et al. (2013) studied this question.
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