TAILIEUCHUNG - Fiber Optics Illustrated Dictionary - Part 58

The Fiber Optics Illustrated Dictionary - Part 58 fills a gap in the literature by providing instructors, hobbyists, and top-level engineers with an accessible, current reference. From the author of the best-selling Telecommunications Illustrated Dictionary, this comprehensive reference includes fundamental physics, basic technical information for fiber splicing, installation, maintenance, and repair, and follow-up information for communications and other professionals using fiber optic components. Well-balanced, well-researched, and extensively cross-referenced, it also includes hundreds of photographs, charts, and diagrams that clarify the more complex ideas and put simpler ideas into their applications context | Fiber Optics Illustrated Dictionary While Hansen went on to develop linear accelerators the Varían brothers and other scientists including their friend and associate Edward L. Ginzton used the technology to develop radar systems during World War II cofounded Varían Associates in 1948. The radio waves in historic Klystron tubes are drawn from a high-voltage electron beam in such a way that much of the energy is dissipated resulting in low efficiency levels compared with succeeding technologies. However klystron technology was never fully superseded especially in broadcast applications and some scientists felt the efficiency could be improved. The Lewis Varian version of the klystron technology developed in the mid-1980s recovers the wasted energy by recycling the electron beam effectively doubling die usable portion of the radio frequency and consequently reducing power consumption in UHF television transmitters. Commercial production of the new technology began in 1990 on the product now known as the CPI MDC klystron. Commercial broadcasting klystrons come in a variety of configurations supporting frequency bands such as the C-band at different channel capacities usually 6 12 or 24 . There may be separate tubes for image and audio amplification. Cooling with water is typical in klystron applications where the tube becomes hot. See bunching Ginzton Edward cavity magnetron magnetron Varían Sigurd and Russell Varían Associates. KMI Corporation A fiber optics and telecommunications market research and consulting firm founded in 1974. KMI is a subsidiary of PennWell and part of Penn Well s Advanced Technology Division with research headquarters located in Providence RI. KMI publishes Fiberoptics Market Intelligence as a semi-monthly newsletter and provides various commercial market studies fiber optic systems wall maps marketing workshops and databases. See FiberFax Fiberoptics NewsBriefs Fiberoptic Undersea Systems Undersea News Service. KMID key material identifier. .

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