Articles

10G and “Killer Apps” Excite Telecom Market in ‘07

In the optical communications industry, it’s important to look back before you look forward. History has a way of putting the future into perspective.

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Laser Diode Market Stays Hot in 2007

The high-power laser diode market has grown rapidly in the last twelve months, a trend that is set to continue throughout 2006 and beyond. The global market for laser systems is forecast to grow by 8% in 2006 to US $5.9 billion, with diode lasers alone growing by 8%.

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Optical Software in ‘07: Isn’t that Easy?

Optical software programs provide optical designers with the means to predict and analyze performance characteristics of optical systems without experimental prototyping. Looking ahead into 2007, optical software will continue to enhance optical design capabilities in several ways. Optical software developers are concentrating their efforts on improving communication channels between engineers in disparate fields who are asked to collaborate. In a word, the direction is “inter-operability.”

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Alternatives to Keyways in Motion Systems

The age-old tradition of using shaft keys in mechanical drives has served the power transmission industry well for many years. When appropriately sized, it guarantees that virtually no relative motion can take place between a shaft and its respective shaft hub in a unidirectional continuous motion application. Today’s increasing demands for speed, precision, and small size have changed the standard for shaft locking devices, and challenged motion components manufacturers to develop new methods of keyless shaft locking for dynamic loading. As motors and drives become increasingly capable of rapid acceleration and rotary positioning accuracy in smaller and smaller packages, backlash, stress distribution, and balance have all needed to be addressed in shaft locking devices, in many cases rendering the shaft key obsolete.

Posted in: Features, Motion Control, Articles

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Glass Molding Makes High-Quality Aspheres Cost Effective

High-resolution digital imaging, low-light-level biomedical devices, and automotive sensing are just a few of today’s hot technologies demanding both low-cost and high-performance optical systems. Critical in this effort is the mid- and high-volume requirement for aspheric optical components. Unfortunately, CNC polishing methods are expensive and take too long to produce each component, which has pushed precision glass molding to the front of asphere manufacturing technologies.

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New Metals, Optics, Tools, and Processes Focus on Satellite Imaging

Lightweight, aspheric, reflective optical designs commonly are designed and built for demanding space-based remote sensing, targeting systems, and aerial reconnaissance. Traditional designs utilizing low expansion optical glasses steadily are giving way to metals such as aluminum, beryllium, and AlBeMet, and ceramics such as silicon carbide. These materials can be produced in extremely lightweight, yet robust and athermalized, designs by virtue of their superior tensile strength, fracture toughness, and the ability to compose support structures and mirrors from identical materials.

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QC Lasers Improve Hazardous Gas Monitoring

The measurement of gases associated with industrial processing/emissions monitoring has become increasingly important as the need to improve efficiencies in process control has increased, and legislation governing emissions has come into force. Gases including NOx, SOx, CO2, CO, NH3, and H2O commonly are used to assess processes such as combustion and quenching, while many fall under emissions legislation resulting from the Kyoto agreement.

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