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Research & Technology News
Lucent Demonstrates 100-Channel Amplifier
Sep 1, 1997 — VICTORIA, British Columbia, Canada -- Lucent Technologies has demonstrated a 100-channel optical amplifier that could revolutionize optical networking technology, according to the company. The experimental ultra-wideband optical fiber amplifier can boost lightwave signals carried simultaneously over 100 or more channels of light, company officials said. The optical amplifier spans 80 nm, nearly seven times the optical bandwidth of current commercial wavelength division multiplexed (WDM)...
Machine Vision, NDT and UV Lasers Top Semicon West '97
Sep 1, 1997 — SAN JOSE, Calif. -- Semicon West '97, an international exposition highlighting innovations in the semiconductor equipment and materials industry, brought the latest developments in wafer processing and integrated circuit test, assembly and packaging...
Marriage of Laser/Arc Welding Promises More for Less
Sep 1, 1997 — HAIFA, Israel -- Plasma-Laser Technologies (PLT) Ltd. has coupled arc plasma and a laser beam to produce a cutting and welding tool that offers more than just the sum of the two systems. The notion of augmenting a laser beam with a plasma arc for...
Multimedia Electronic Imaging Makes Strides
Sep 1, 1997 — The Heinrich Hertz Institut in Berlin has developed a video decoder chip that takes image data and prepares it for display in high-definition television systems. The HDTV-MPEG2 video decoder chip is being implemented in cooperation with Fujitsu...
Optem International
Sep 1, 1997 — WASHINGTON -- Researchers at the Naval Research Laboratory's Center for Bio/Molecular Science and Engineering have developed a multichannel biosensor capable of providing early detection of anthrax and other lethal biological agents. Now in advanced...
Photonics Center Holds Inaugural Symposium
Sep 1, 1997 — The Boston University Photonics Center will hold its first symposium, "Photonics: Driving the Economy of the Future," on Thursday, Oct. 23. Speakers include representatives from Lockheed Martin, Polaroid, Hewlett-Packard and Corning. Mary Good,...
Photorefractive Polymer Provides High Optical Gain and Long Lifetime
Sep 1, 1997 — SAN DIEGO -- Scientists have unveiled a durable, optically efficient polymer that improves on several years of research toward an inexpensive photorefractive material. Moreover, they have demonstrated its use as an efficient phase conjugated mirror,...
Princeton Develops Organic Laser
Sep 1, 1997 — Researchers at Princeton University in New Jersey have developed a laser from vacuum-deposited organic thin-film materials. Organic lasers have been eyed for years as a possible replacement for inorganic semiconductor diode lasers. Potential...
Report Reveals Pitfalls of Laser Astigmatism Measurement
Sep 1, 1997 — AUBURN, Calif. -- Scientists using a common method of measuring the astigmatism, or optimum focal length, of laser diodes have been led astray, according to a report released by researchers at Coherent Inc. Measuring astigmatism is vital to the...
Sensor Warns of Biological Warfare
Sep 1, 1997 — WASHINGTON -- Researchers at the Naval Research Laboratory's Center for Bio/Molecular Science and Engineering have developed a multichannel biosensor capable of providing early detection of anthrax and other lethal biological agents. Now in advanced...
Silicon Glows With Iron 'Islands'
Sep 1, 1997 — GUILDFORD, UK -- Integrated optical devices are the ultimate application for a 1.54-µm light-emitting diode (LED) structure built in a conventional silicon diode junction. While compound semiconductor LEDs based on gallium arsenide abound, an...
Single Polymers Jiggle Predictably
Sep 1, 1997 — PASADENA, Calif. -- DNA molecules submerged in water vibrate harmoniously, according to a recent study enabled by photonics and reported in the July 10 issue of Nature. Physicist Steven Chu of the California Institute of Technology and a student...
Telescope Looks for Dirty Skies
Sep 1, 1997 — A 30-in. Beck telescope returned to Agnes Scott College in Decatur, Ga., after a 10-year hiatus. The instrument was originally installed at the college's observatory, but after pollution ended its star-gazing days, it was moved to a Georgia State...
Volcano Research Keeps Its Distance
Sep 1, 1997 — MEXICO CITY -- A Pan-American research team has been using photonics to watch a nearby volcano in hopes of learning how to forecast eruptions, assess health risks for people who live near volcanoes and determine volcanoes' effects on air pollution....
World's First Automated Highway Debut
Sep 1, 1997 — The nation's first stretch of automated highway debuted in San Diego recently, providing a glimpse of hands-off commuting in the next century. Cars equipped with magnets, radar and 1-in. video cameras on the rear-view mirrors followed visual aids...
Defense Technology Aids Medicine
Aug 1, 1997 — WASHINGTON -- A combination of military and commercial technology has created a practical midwave IR spectral imaging microscope. The system developed by researchers from the National Institute of Standards and Technology and the National Institutes...
DUV Inspection May Be Vital to Next Generation of Microchips
Aug 1, 1997 — YAVNE, Israel -- Scientists familiar with the semiconductor industry say deep-UV inspection systems will be an important part of next-generation microchips as feature sizes slip below the 0.25-µm mark by the turn of the century. About every...
Europeans Aim to Decorate Plastics
Aug 1, 1997 — Lambda Physik has teamed up with several partners for the European Brite/Euram III development program to design a system for laser decoration. The proposed system will create permanent multicolor patterns and photographic images directly on various...
Fiber Aids Atom Deposition
Aug 1, 1997 — A group of Japanese and Korean researchers have discovered an atom deposition technique that overcomes the diffraction limit in optical lithography. The researchers sent atoms down a micron-size, hollow optical fiber, with a blue detuned evanescent...
Fiber Laser Sets a Record
Aug 1, 1997 — MURRAY HILL, N.J. -- A recent demonstration of optical fiber lasers with ultrahigh output powers could have implications for telecommunications, materials processing and medical applications, according to the scientists who developed the technology....
French Researchers Model Solitons
Aug 1, 1997 — With rapidly increasing transmis-sion speeds in fiber optic networks, problems such as chromatic dispersion have distorted optical signals. Bernard Michaux, a research engineer at the Burgundy Laboratory of Computing, Electronics, Signals and Images...
Hybrid Receptors: A New Direction for Nonlinear Development
Aug 1, 1997 — PASADENA, Calif. -- You would think that increasing the efficiency of a third-order nonlinear material by 35 times at the commercially attractive wavelength of 1.5 µm would be enough to make a researcher happy. After all, it could be an...
Large Telescope Reaches Japan
Aug 1, 1997 — The Technical Museum of Nagasaki in Japan is the new home of a 70-cm telescope manufactured by Carl Zeiss. The medium-size telescope features an optically corrected two-mirror Ritchey-Chrétien system and a computer-controlled electronic...
Lasers Help Identify Airborne Particles in Real Time
Aug 1, 1997 — RIVERSIDE, Calif. -- Around the globe, lasers are becoming one of the most accurate ways to measure wind speed and direction. Now researchers are using coherent beams to determine in real time and in situ the size and chemical composition of...
Machine vision steals the show
Aug 1, 1997 — TUCSON, Ariz. -- Machine vision successfully made the move from laboratory to industry. Now it looks as if it might make it in the theater as well. Arizona State University's Robb Lovell and John Mitchell have picked up where mainstream machine...
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