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A back-incident Si/sub 0.65/Ge/sub 0.35//Si multiple quantum-well resonant-cavity-enhanced photodetector operating near 1.3 μm is demonstrated on a separation-by-implantation-oxygen substrate. The resonant cavity is composed of an electron-beam evaporated SiO2-Si distributed Bragg reflector as a top mirror and the interface between the buried SiO2and the Si substrate as a bottom mirror. We have obtained the responsivity as high as 31 mA/W at 1.305 μm and the full width at half maximum of 14 nm.
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Cheng et al. (2000) studied this question.
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