Journal
OPTICS EXPRESS
Volume 16, Issue 3, Pages 1659-1668Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.16.001659
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Silicon is an extremely attractive material platform for integrated optics at telecommunications wavelengths, particularly for integration with CMOS circuits. Developing detectors and electrically pumped lasers at telecom wavelengths are the two main technological hurdles before silicon can become a comprehensive platform for integrated optics. We report on a photocurrent in unimplanted SOI ridge waveguides, which we attribute to surface state absorption. By electrically contacting the waveguides, a photodetector with a responsivity of 36 mA/W and quantum efficiency of 2.8% is demonstrated. The response is shown to have minimal falloff at speeds of up to 60 Mhz.
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