S. Jongthammanurak, J. Liu, K. Wada, D. Cannon, D. T. Danielson, D. Pan, J. Michel, L. Kimerling
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Large Electro-Optic Effect in Tensile Strained Ge-on-Si Films
We report the observation of an enhanced electro-optic effect in the weakly absorbing regime for tensile strained Ge epitaxial films. With Deltan/F=260 pm/V and Deltaalpha/alpha-3 the material has significant potential for field-induced phase or electro-absorption modulator devices