The goal: push network speeds 10 to 1,000 times higher. The method: use semiconductor diode lasers that transmit information on tens to hundreds of different wavelength channels simultaneously through the same optical fiber. UC Berkeley Electrical Engineering Professor Constance Chang-Hasnaina hopes to push the network speeds beyond the gigabit rate by etching a microscopic, tunable laser directly on a computer chip. "Tunable lasers are available today, but they are about 100 million times larger and a million times slower than this," Chang-Hasnain says. "An integrated device that includes the laser and associated electronics would fit on the same chip and be significantly cheaper." Chang-Hasnain and colleagues etched a vertical cavity surface-emitting laser (VCSEL) directly onto a gallium arsenide chip using techniques commonly employed to make integrated circuits and microprocessors. Each laser measures only 150 by 200 microns. The professor suggested that such lasers could also be used for wavelength division multiplexed systems. This would speed communication between processors in a computer made up of many parallel processors, eliminating connections to a motherboard. FAX: (510) 643-7461.
We looked at a number of sources to determine this year's greenest cars, from KBB to automotive trade magazines to environmental organizations. These 14 cars emerged as being great at either stretching fuel or reducing carbon footprint.
Healthcare might seem to be an unlikely target application for the Internet of Things technology, but recent developments show small ways that big-data is going to make an impact on patient care moving into the future.
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is