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(38,334 articles)
Popular News
Demand Propels Growth in Fiber Optic Test Equipment
Jan 1, 2006 — High-speed networking drives the fiber optic test equipment market, notably optical time-domain reflectometers, optical light sources, optical power meters and optical loss test sets. “World Fiber Optic Test Equipment Market,” issued by Frost & Sullivan of New York, says that growth of this market depends on the speed of the adoption of newer technologies. Although dense wavelength division multiplexers held the largest market share in 2004, greater need for high-speed networking is...
Photonics and Engineering Drive German Marke
Jan 1, 2006 — According to “Industry Report 2005: The Optical, Medical and Mechatronical Industry in Germany,” released by Spectaris eV of Berlin, approximately 55 percent of business conducted in these sectors in 2004 was driven by photonics and precision...
German and European Vision Markets Post Gains
Jan 1, 2006 — The European Machine Vision Association in Frankfurt, Germany, recently released a report on the machine vision market in Europe, while the German Manufacturing Federation released a complementary report for just that country. Not surprisingly, the...
Excitonic Circuits: New Tools for Manipulating Photons
Jan 1, 2006 — Electronics uses electrons. Photonics uses photons. Recently, the new field of spintronics has been defined, which uses spins for signals. Could we eventually have excitonics, circuits based on the control of excitons? Although excitons have been...
Fluorosensor Reveals Seafloor Habitats
Jan 1, 2006 — Robert C. Aller likes to muck about when he works. He studies worms, clams and other animals that live in aquatic sediments. These creatures create complex, three-dimensional chemical microenvironmental and transport path networks that Aller, a...
Spectroscopy Reveals Details of the Hope Diamond
Jan 1, 2006 — The Naval Research Laboratory in Washington has been synthesizing diamonds since the mid-1980s, hoping to use them as thermal, optical and electrical semiconducting materials for a variety of US Department of Defense applications. Because high...
Lasers Listen to Vortices from Airplane Wing Tips
Jan 1, 2006 — At Flight Safety Technologies Inc. in Mystic, Conn., senior vice president for technology Neal Fine is working to ease airport congestion while increasing safety. His company is using a laser-based system dubbed Socrates to listen for the sound of a...
Electronics Integrated with Photonics in 3-D on Silicon Chip
Jan 1, 2006 — Researchers at the University of California, Los Angeles, have realized the three-dimensional integration of electronics and photonics in a monolithic silicon-on-insulator substrate. The photonic device was buried inside the silicon, while a...
Photonic Rubber Sheet Displays Tunable Structural Color
Jan 1, 2006 — An elastic photonic crystal developed by scientists at the National Institute for Materials Science in Tsukuba, Japan, demonstrates a shift in its apparent color under an applied strain, suggesting its utility in strain imaging and mechanical...
Nanostructured Material Exhibits Negative Refractive Index in the Visible
Jan 1, 2006 — A team of investigators at the University of Manchester in the UK, the Institute of Microelectronics Technology in Chernogolovka, Russia, and Aston University in Birmingham, UK, has reported a real part of the refractive index of −0.7 at...
Tunable Slow Light Achieved in Silicon Photonic Crystal
Jan 1, 2006 — Scientists at IBM’s T.J. Watson Research Center in Yorktown Heights, N.Y., have carefully measured the slowing of light in a silicon photonic crystal and have demonstrated that the amount of slowing can be controlled by heating the crystal. Slow...
Silicon Laser Relies on Quantum Wells
Jan 1, 2006 — Silicon-based lasers have been much in the news recently, as some researchers have explored Raman lasers in silicon, while others have pursued doping or the introduction of a lasing element into silicon. These developments hold the promise of...
Fiber Laser Generates Multiple Wavelengths
Jan 1, 2006 — Multiwavelength fiber lasers are important for testing wavelength division multiplexing telecommunications systems and for other applications in metrology and sensing. Unfortunately, there is a fundamental obstacle standing in the way of...
Three-Color Ink Proposed for Electronic Paper
Jan 1, 2006 — The low cost and low power requirements of electronic paper displays promise to make them suitable for applications from variable price tags to wearable health monitors. But for the technology to fully realize this potential, the electronic ink...
Camera Chip Promises Higher-Quality Images at Lower Power
Jan 1, 2006 — Scientists at the University of Rochester in New York have developed two technologies that may enable the design of CMOS image sensors with a higher performance than today’s chips and using a fraction of the power. Mark F. Bocko and Zeljko...
Entanglement Demonstrated Between Remote Ensembles
Jan 1, 2006 — A team of researchers at California Institute of Technology in Pasadena and at Bell Labs in Murray Hill, N.J., has reported the entanglement of ensembles of cesium atoms separated by 2.8 m and the storage of the entanglement for up to 1 µs. The...
Hybrid Technique Enables Single-Molecule Absorption Spectroscopy
Jan 1, 2006 — By combining rear-illumination, rapid excitation modulation and lock-in amplifier detection, investigators at the University of Illinois at Urbana-Champaign have used scanning tunneling microscopy to detect laser absorption by single molecules. The...
Novel Camera Employs Microlenses
Jan 1, 2006 — Researchers at Stanford University in California have found that one lens may be good but that thousands of lenses are better for taking pictures. The group at Pat Hanrahan’s lab has developed and field-tested under a variety of conditions a...
Software Fills the Blanks in Imagery
Jan 1, 2006 — As satellite-borne sensors have become more sophisticated, a wealth of data has become available to Earth scientists. Unfortunately, the level of detail these sensors afford carries a downside: It has become much more difficult and computationally...
Photonic Crystal Array Lases at Stanford
Jan 1, 2006 — Lasers based on nanocavities in photonic crystals have been widely investigated because of the high density of states associated with these tiny devices, which leads to low lasing thresholds and to high direct-modulation rates. But their drawback to...
Integrated Fiber Monitors Itself for Thermal Leakage
Jan 1, 2006 — If there are failures in the high-power fiber optic lines used in medical, industrial and defense applications, the problems can be huge. It is, therefore, important to be able to predict and prevent such failures. Researchers at Massachusetts...
Self-Assembled Nanoprisms Form Smectic Crystal
Jan 1, 2006 — Building nanometer-scale devices such as photonic crystals requires assembly techniques of unprecedented accuracy. Developing these techniques can be as difficult as designing the devices and, thus, self-assembly methods — in which the components of...
CW Yb:LuVO4 Laser Produces More Than 1 W
Jan 1, 2006 — The vanadate crystals YVO4, GdVO4 and LuVO4 are good host materials for diode-pumped neodymium-doped lasers because they have large absorption and emission cross sections, have broad bandwidths and naturally lase in a single...
Sensitive Intrusion Detector Relies on Fiber Optic Reflectometer
Jan 1, 2006 — Optical time-domain reflectometry (OTDR) is a well-established technique for detecting faults and discontinuities in long stretches of optical fiber. A short optical pulse is injected into one end of the fiber, and as it travels along the fiber’s...
Simple Technique Tunes a Fiber Lasers Wavelength
Jan 1, 2006 — The broad spectral linewidths of fiber lasers make them attractive candidates for versatile, wavelength-tunable sources, but the wavelength-tuning mechanisms — often involving multimode fiber Bragg gratings or other complex components — are neither...
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