期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 18, 期 21-24, 页码 2442-2444出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2006.885623
关键词
germanium; photodectectors; receivers
Ge on Si p-i-n photodetectors with areas which are compatible with commercially available receivers have been fabricated and tested. A dark current density of 6 mA/cm(2) at -1-V bias has been measured at room temperature; when heated to 85 degrees C, the measured dark current increases by a factor of nine. A responsivity of 0.59 A/W at 850 nm has been measured from these Ge detectors, which matches or exceeds commercially available GaAs devices. We have measured bandwidths approaching 9 GHz at -2-V bias from 50-mu m diameter Ge detectors, and have observed eye diagrams comparable to those obtained from GaAs-based receivers at 4.25 Gb/s.
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