6 August 2003 Redmond, WA Lightwave -- Terabeam Corp., provider of broadband wireless systems, today announced that the U.S. Patent and Trademark Office has awarded the company two additional patents relating to its Free Space Optics (FSO) and high frequency Millimeter Wave (MMW) systems.
The new patents cover a technique for using holographic optical elements to greatly simplify the design of FSO transceivers and a device for measuring the attenuation characteristics of building windows during the deployment of FSO and MMW systems.
Patent 6,597,476 covers an apparatus for shaping and separating the transmitted and received laser light communication signals in an FSO transceiver using holographic optical elements (holograms). Traditionally, FSO transceivers have used numerous lenses, mirrors, and beam-splitters to direct light energy to the various components in the system. Terabeam's holographic technology achieves the same functionality with significantly fewer components and can allow FSO transceivers to be smaller, thinner, more lightweight, and less expensive to produce.
Patent 6,603,554 addresses Terabeam's Window Attenuation Meter (WAM). Terabeam systems can be used safely indoors by sending and receiving transmissions through windows. The WAM is a portable, battery-powered device that measures the loss (attenuation) of signal strength introduced by the window from the inside of the window, without requiring access to both sides as has been required by other such devices. With the hundreds of coatings and properties of various types of glass, assessing that attenuation is critical to achieving high reliability standards. Terabeam's WAM won a gold medal in the 2002 Industrial Design Excellence Awards from the International Design Society of America (IDSA).
In addition to these new patents, Terabeam has over 79 additional innovations in various stages of the patent process. Terabeam holds patents in the US in the areas of network control, optical system pointing and mounting, MMW modulation, and holographic optics. The company also holds several patents in Japan and Taiwan.