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This monthly review lets you "meet" the new advertisers appearing in Defense Tech Briefs (DTB). Here's a sneak peek at the products, services, and offers available from October's first-time advertisers. AVX Corp. (Myrtle Beach, SC) offers products for defense, aerospace, and space applications, including ceramic capacitors, resistors, filters, integrated passive components, timing devices, and connectors.

Posted in: Blog

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Using Ethernet for Process Automation

The use of Ethernet communications in industrial applications is growing because it enables the real-time exchange of information between processing equipment and companies' Ethernet-based management systems. Some of the factors encouraging the use of Ethernet technology include: the speed advantages over lower baud rate protocols the number of tools available for troubleshooting and optimizing a network, the broad base of competitive vendor support and solution options and the large pool of trained personnel who are familiar with the technology. In addition, the ability to bridge existing proprietary communications schemes makes it possible to phase in the use of Ethernet rather than having to replace everything at once.

Posted in: Articles

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Opto-Electronic Oscillator Using Suppressed Phase Modulation

Phase noise would be much lower than in prior OEOs. A proposed opto- electronic oscillator (OEO) would generate a microwave signal having degrees of frequency stability and spectral purity greater than those achieved in prior OEOs. The design of this system provides for reduction of noise levels (including the level of phase noise in the final output microwave signal) to below some of the fundamental limits of the prior OEOs while retaining the advantages of photonic generation of microwaves. Whereas prior OEOs utilize optical amplitude modulation, this system would utilize a combination of optical phase modulation and suppression thereof. The design promises to afford, in the opto-electronic domain, the low-noise advantages of suppression of carrier signals in all-electronic microwave oscillators.

Posted in: Information Sciences, Briefs

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How PCI Express Is Changing Machine Vision

PCI Express is the peripheral bus now being adopted by next-generation PCs, servers, and industrial computers. It provides a scaleable, high-bandwidth, point-to-point pathway between peripheral cards and the computing core while retaining application software compatibility with previous generations. For machine-vision systems, the architecture and higher bandwidth of PCI Express yield major increases in achievable frame rate and image size as well as simplifying the implementation of multi-channel capability.

Posted in: Articles

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Cold Atom Source Containing Multiple Magneto-Optical Traps

This source allows a smaller package relative to single-trap sources of similar performance. An apparatus that serves as a source of a cold beam of atoms contains multiple two-dimensional (2D) magneto-optical traps (MOTs). (Cold beams of atoms are used in atomic clocks and in diverse scientific experiments and applications.) The multiple-2D-MOT design of this cold atom source stands in contrast to single-2D- MOT designs of prior cold atom sources of the same type. The advantages afforded by the present design are that this apparatus is smaller than prior designs.

Posted in: Physical Sciences, Briefs

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Technology Business Briefs

Portfolio of Mobile Messaging Patents for Sale Four U.S. patents, several U.S. applications and a family of international counterparts are available. Reinforced Micromodule This technology relates to a reinforced micromodule of the kind for supporting an integrated circuit adapted here for use in combination with flexible, card-type, portable data carrier devices.

Posted in: Blog

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WGM-Resonator/Tapered-Waveguide White-Light Sensor Optics

Light patterns formed by these optics contain information on absorption spectra. Theoretical and experimental investigations have demonstrated the feasibility of compact white-light sensor optics consisting of unitary combinations of (1) low-profile whisperinggallery- mode (WGM) resonators and (2) tapered rod optical waveguides. These sensors are highly wavelength-dispersive and are expected to be especially useful in biochemical applications for measuring absorption spectra of liquids.

Posted in: Physical Sciences, Briefs, TSP

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