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锗(Ｇｅ)可与具有硅(Ｓｉ)基装置的发射器、调制器和探测器集成,因此锗光接收器在光通信中有价值。麻省理工学院和罗马Ｔｅｒｚａ大学的研究人员建造了异质结连接硅基锗光接收器,在正入射下显示近红外已知的最高灵敏度。研究人员在900°Ｃ退火的ｐ型Ｓｉ基晶片上生长1μｍ厚的
Germanium (Ge) can be integrated with emitters, modulators and detectors with silicon (Si) based devices, so germanium light receivers are of value in optical communications. Researchers at the Massachusetts Institute of Technology and the University of Rome in Rome built heterojunction-connected SiGe-based optical receivers that show the highest sensitivity known near-infrared at normal incidence. The researchers grew 1 μm thick on p-type Si-based wafers annealed at 900 ° C