MANHASSET, N.Y. -- A researcher has demonstrated that the rare earth material erbium can be integrated with silicon for the first time to amplify an optical signal.
PhD candidate Laura Agazzi of the University of Twente (Enschede, Netherlands) demonstrated a working chip able to amplify light at speeds up to 170 Gbit/sec. The prototype chip has a signal gain of 7.2 db at 1,533 nm.
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The prototype is a starting point for generating a laser with an extremely narrow linewidth of 1.7 KHz: “You could use these chips for sensor purposes, for tracing extremely small particles, for example,” Agazzi reported.
The materials research is sponsored by the MESA+ Institute for Nanotechnology of the University of Twente.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.