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Communications News
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 important step toward all-optical switching in local cross-connect telecommunications networks. Instead, California Institute of Technology chemist Seth Marder and George Stegeman, a physicist at the University of Central Florida's CREOL facility in...
Matsushita Improves Silica Aerogel
Aug 1, 1997 — OSAKA, Japan -- A new waterproofing process could lengthen the lifetime and optical efficiency of silica aerogel, a material used in a variety of applications, including the cladding and protection of optical fiber. Created by researchers at...
Oil Platforms Get Connected
Aug 1, 1997 — Submarine Systems International has signed a $17.6 million deal with Brazil's state-owned oil company, Petroleo Brasileiro S.A., to provide the first undersea fiber optic cable network for offshore oil platforms. The network will consist of 475 km...
Telecommunications:
Aug 1, 1997 — Telecommunications is primarily a photonic endeavor in the 1990s. Optical fiber carries signals from lasers to detectors, which just happen to turn those photons into electrons for the ride to a switch that sends it to a television, a telephone or...
American Blue Diode Laser Pulses Atop Silicon Carbide Substrate
Jul 1, 1997 — DURHAM, N.C. -- Cree Research Inc. has demonstrated a pulsed blue semiconductor diode laser that operates at room temperature -- a first step in a race for a commercial device that would greatly increase optical storage capacity.The company's 403-nm...
Putting Photons on Hold Improves Processing
Jul 1, 1997 — To store or process information encoded as light signals, it is often necessary to slow down strings of photons.A group of scientists from the University of Munich has developed a semiconductor device that serves as a quantum well, which...
Science Foundation Funds Connections to Speedy Computer Network
Jul 1, 1997 — The National Science Foundation has made grants to 35 research institutions in the US, enabling scientists to communicate and share resources on the foundation's high-speed Backbone Network Service. The connections will allow researchers to use...
X-Ray Tool Aids Laser Design
Jul 1, 1997 — MURRAY HILL, N.J. -- Scientists at Bell Laboratories have developed a tool that uses x-ray technology to measure strain in small volumes of material for laser manufacturing and quality control applications.According to the company, the x-ray...
AT&T Offspring Plans Undersea Network
Jun 1, 1997 — MORRISTOWN, N.J. -- Tyco Industries has adopted AT&T progeny Submarine Systems Inc. (SSI), and already the undersea telecommunications company is showing its new parent that it learned a lot from Ma Bell.Submarine Systems has announced its own...
Network Chooses Terrestrial Fiber for TV Broadcasting
Jun 1, 1997 — News-12 New Jersey, a regional 24-hour all-news cable television channel owned by Rainbow Program Holding Inc. of Floral Park, N.Y., was looking for a high-quality yet economical means of transmitting the network's programming from its Long Island...
Polymer Connectors Challenge Costlier Rivals
Jun 1, 1997 — HARRISBURG, Pa. -- As the saying goes, you get what you pay for. But according to a new study, the fiber optics industry could be getting more than that.Researchers at AMP Inc., a manufacturer of electrical and electronic interconnection systems,...
WDM to Assume Greater Role in Telecom
Jun 1, 1997 — As telecommunications carriers search for more bandwidth to meet the demands of an increasingly information-hungry consumer, wavelength division multiplexing (WDM) will continue to grow in importance, according to officials at Lucent...
Galileo Refocuses After Xerox Loss
May 1, 1997 — STURBRIDGE, Mass. -- Despite the loss of its biggest customer earlier this year and the resulting financial blow, Galileo Corp. officials are confident that the company will be able to get back on its feet by refocusing on its strategic objectives...
Quantum Dots
May 1, 1997 — The techniques used to manufacture computer chips have created a wealth of optoelectronic devices with remarkable features. These heterostructures (sandwiches created by alternating layers of two materials with different conductive properties) owe...
Telecommunications Equipment Sales Rise, Bolstered by Internet
May 1, 1997 — Factory sales of telecommunications equipment rose 16 percent to $63 billion last year, spurred by rapid gains in Internet and intranet usage. The Telecommunications Industry Association reported that US exports of telecommunications equipment...
Tyco Buys AT&T Undersea Unit
May 1, 1997 — In an effort to strengthen its hold on the undersea fiber optic cable market, Tyco International Ltd. agreed to purchase AT&T Submarine Systems Inc., a manufacturer of undersea fiber optic telecommunications cable. The purchase price was $850...
Adaptive Optics Aim for Earthly Applications
Apr 1, 1997 — Large Earth-based telescopes use adaptive optics to measure and compensate for rapidly fluctuating wavefront distortions that blur the images of objects viewed through the turbulent atmosphere. Compensation for turbulence is important in many other...
Fast, High-Resolution Cameras Image the Sun's Surface
Apr 1, 1997 — To the average person, the sun is a celestial body around which the Earth and other planets revolve. It's a source of warmth and light. Many don't realize that the sun is a star, and an interesting one at that. But researchers at the Big Bear Solar...
Galileo Loses $20.4 Million Account for Photocopier Component
Apr 1, 1997 — Galileo Corp. of Sturbridge, Mass., has received written notification that Xerox Corp. has developed internal production capabilities for dicorotron assemblies, electronic components used in photocopiers, and will no longer buy them from Galileo....
Israeli Conference Marks Industry's Anniversary
Apr 1, 1997 — JERUSALEM -- A glimpse into the future by the laser's discoverer and a retrospective on the development of holography highlighted the 10th Meeting on Optical Engineering held last month at Jerusalem's International Convention Center. Keynote...
Nippon Electric Awards Solar Contract
Apr 1, 1997 — CHATSWORTH, Calif. -- Japan's Nippon Electric Co. has awarded the contract for Solar Array Drive Assemblies and the associated electronics for its Optical Interorbit Communications Engineering Test Satellite program to Schaeffer Magnetics Inc. The...
MCI Tests Wavelength Division Multiplexing System
Mar 1, 1997 — In an effort to increase the capacity of its existing fiber plant, telecommunications giant MCI has launched what it calls the first real-world combination of a 10-Gb/s OC-192 networking system and wavelength division multiplexing on 60 circuits...
Micro- and Nanosatellites Could Populate New Earth-Orbit Constellations
Mar 1, 1997 — A team of researchers from The Aerospace Corp., led by I.L. Helvajian, hopes developments in laser machining will allow space agencies and communications companies to produce satellites with diameters under 15 cm, the same way hardware manufacturers...
Optical Fibers Make Sense of Chemicals
Mar 1, 1997 — Optical fibers have revolutionized a variety of fields: They carry images through endoscopes, voices through phone lines, data and video through cable networks, and, more recently, physical and chemical information through sensors. The fiber's...
Stay Tuned: Photonic Filters Color Your World
Mar 1, 1997 — Spectral information enhances our knowledge of astronomy, chemistry, metallurgy, and meteorology, and it contributes to applications in photonics, communications and medical instrumentation. Different specialties may use one of many spectral...
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