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We demonstrate enhanced electro-optic phase shifts in suspended InGaAs/InGaAsP quantum well waveguides compared to attached waveguides. The enhancement stems from tightened mode confinement between the electrodes, and should improve further with thinner waveguides.
We experimentally demonstrate an InP-based microelectromechanically tunable asymmetric Fabry-Perot quantum well modulator that operates in the optical C-band. The device exhibits contrast ratios over 20 (13 dB) with less than 8 volts bias.
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