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(38,111 articles)
Popular News
Bell Labs Reports First Transmission of 100-Gb/s Ethernet Over Optical
Oct 3, 2005 — MURRAY HILL, N.J., Oct. 3 -- Bell Labs, the research and development division of Lucent Technologies, announced the first reported transmissions of 100-Gb/s Ethernet over optical, widely considered a significant milestone in the industry's move toward migrating to 100-Gb/s data networking, in two papers presented to the European Conference and Exhibition on Optical Communication in Scotland. "This work is a major first. We have broken through the ceiling in transmission rates and described two...
Meriton Buys Mahi Networks
Oct 3, 2005 — OTTAWA, Oct. 3 -- Optical networking solutions provider Meriton Networks today announced the acquisition of Mahi Networks Inc. of Piscataway, N.J.; terms of the deal were not disclosed. The combined company will be known as Meriton Networks. Michael...
PPG Awarded Follow-On Contracts for Missile Warning Sensors
Oct 3, 2005 — NORTHVALE, N.J., Oct. 3 -- Photonic Products Group Inc. announced that its Inrad business unit, which specializes in crystal-based optical components and devices, laser accessories and instruments, has been awarded a series of follow-on production...
News Briefs
Oct 3, 2005 — Wilmington, Mass.-based Ksaria Corp., a manufacturer of fiber optic cables for military, aeronautical and harsh environment applications, has been awarded a Navy contract to develop two product solutions for testing and repairing fiber optic cables...
UW Madison Center Funding Renewed
Oct 3, 2005 — MADISON, Wisc., Oct. 3 -- The University of Wisconsin-Madison Materials Research Science and Engineering Center (MRSEC) was awarded nearly $14.8 million by the National Science Foundation to continue its research, for the next six years, on the...
Programmable Optical Filter Uses Digital Mirror Array
Oct 1, 2005 — Investigators at Texas Tech University in Lubbock have demonstrated a programmable optical filter whose underlying technology may be applicable to numerous telecommunications devices, such as variable optical attenuators, dynamic optical add/drop...
Double Duty for MEMS-Based Optical Switch
Oct 1, 2005 — Optical switches based on microelectromechanical systems (MEMS) are at the heart of next-generation “transparent” optical telecommunications networks. Nearly all of today’s networks are “opaque” in the sense that the optical signal is periodically...
Bragg Grating Reduces OPO Bandwidth by Factor of 20
Oct 1, 2005 — Because the wavelengths required for most spectroscopic, remote sensing and biophotonics measurements are rarely emitted by conventional lasers, nonlinear wavelength conversion is frequently employed in these applications. Stimulated Raman...
Brillouin Imaging Demonstrated
Oct 1, 2005 — Scientists at Arizona State University in Tempe have developed a confocal Brillouin imaging microscope that enables the rapid collection of information about the elastic properties of condensed matter systems. The system has potential applications...
Carbon Nanotubes Mode-Lock Fiber Laser
Oct 1, 2005 — Researchers at the University of Tokyo and at Alnair Laboratories Corp. of Kawaguchi, Japan, have demonstrated what they believe is the first 1300-nm laser mode-locked with carbon nanotubes. The accomplishment is an extension of their earlier work...
MEMS Structures Used to Injection-Lock Miniature Laser
Oct 1, 2005 — In the Sept. 5 issue of Applied Physics Letters, investigators at Nanyang Technological University in Singapore report the development of a 3 × 2 × 0.6-mm injection-locked InGaAsP/InP laser system that incorporates microelectromechanical systems...
Plasmon Behavior Analogous to Electron Dynamics
Oct 1, 2005 — Scientists at Rice University in Houston, Trinity University in San Antonio and Chalmers University of Technology in Göteborg, Sweden, have discovered that plasmons in a metallic nanoparticle interact with surface plasmons in a nearby metallic film...
Simulation, Experiment Probe Shocked Nanocrystalline Metals
Oct 1, 2005 — Using computer models and experiments with a high-power laser, a team of scientists at Lawrence Livermore National Laboratory in Livermore, Calif., in collaboration with Paul Scherrer Institut of Villigen, Switzerland, has demonstrated that the...
Photonics Goes Underground in Silicon
Oct 1, 2005 — A research group at the University of California, Los Angeles, has demonstrated the fabrication of optical devices — specifically, a microdisk resonator and coupling waveguides — beneath the surface of a silicon substrate, leaving the surface clear...
Novel Technique Monitors Carbonyl Sulfide
Oct 1, 2005 — Researchers at Universität Düsseldorf in Germany have developed a technique that they call cavity leak-out spectroscopy, a variation of cavity ringdown spectroscopy (see “Through the Looking Glass and What Cavity Ringdown Found There,” Photonics...
Toyota CRDL Demonstrates Inexpensive Bidirectional Fiber Communications
Oct 1, 2005 — Plastic optical fibers are beginning to replace electrical wiring harnesses in many automotive applications because of their low cost, light weight and immunity to electromagnetic interference. Recently, engineers at Toyota Central R&D...
Room-Temperature 9.5-µm Quantum Cascade Lasers Produce >100 mW
Oct 1, 2005 — As part of the Laser Photoacoustic Spectroscopy program funded by the Defense Advanced Research Projects Agency, researchers at Northwestern University in Evanston, Ill., have demonstrated quantum cascade lasers that produce 106 mW of CW 9.5-µm...
Four-Wave Mixing Trumps Homogeneous Gain in Erbium Laser
Oct 1, 2005 — Although current wavelength-division multiplexing (WDM) systems require a different laser for each wavelength transmitted over an optical fiber, engineers envision more-efficient systems in which a single laser will emit all of the necessary...
Linear Optical Amplifier Generates Multiple Wavelengths Simultaneously
Oct 1, 2005 — The previous report describes a technique to finesse mode competition in a homogeneously broadened erbium-fiber laser. Researchers at Hong Kong Polytechnic University in Kowloon, China, have taken the opposite approach to obtaining multiple...
Self-Assembled Films Display Structural Color
Oct 1, 2005 — Scientists at Keio University in Yokohama, Japan, have developed a colloidal “ink” that becomes iridescent upon drying as a result of diffraction. Such materials that produce colors structurally have a variety of potential applications, including as...
Bad Tunnel Diode Enables Good Millimeter-Wave Sensor
Oct 1, 2005 — By realizing that a bad tunnel diode could form the basis for a good sensor, researchers at Ohio State University in Columbus, the US Naval Research Laboratory in Washington and the University of Notre Dame in Indiana may have found a new technology...
Pinhole Camera Targets New Unmanned Aerial Vehicles
Oct 1, 2005 — A research fellow at the University of Sydney in Australia has developed a field-widened pinhole camera for the guidance and stabilization of miniature unmanned aerial vehicles with wingspans of tens of centimeters. A compact pinhole camera for...
Photonics Enables Conservators to Get a Clearer Picture of Art
Oct 1, 2005 — Art Institute of Chicago, Fourier transform infrared microscopy, Raman microscope equipped with an Andor CCD detector, a holographic notch filter and various dispersion gratings. She also uses multiple lasers operating at different wavelengths,...
Laser Micromachining Keeps the Olympic Torch Burning
Oct 1, 2005 — Prior to every Olympic Games, a handheld torch is lighted by the sun shining through a parabolic mirror at the original site of the event in Olympia, Greece. In a relay that has come to symbolize peace throughout the world, thousands of runners...
Lidar Spots Bomb-Sniffing Honeybees
Oct 1, 2005 — Bees aren’t busy just for the sake of being busy. The constant foraging for pollen by honeybees enables the hive to exist. This industriousness also has been proposed as a means to locate land mines. Trained honeybees have been proposed as a...
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