LUCENT TECHNOLOGIES INTROS. INTEGRATED CIRCUITS TO SUPPORT HIGH-SPEED INTERNET ACCESS.Lucent Technologies (NYSE NYSE See: New York Stock Exchange : LU) Microelectronics Group, a leader in communications semiconductors, announced three new low-power integrated circuits Integrated circuits Miniature electronic circuits produced within and upon a single semiconductor crystal, usually silicon. Integrated circuits range in complexity from simple logic circuits and amplifiers, about 1/20 in. (1. (ICs) that enable transmission of voice, video and high-speed data signals over passive optical networks (PONs). PONs are a class of "fiber-to-the-home" or "fiber-to-the-curb" access networks that telephone and cable TV companies are starting to deploy to deliver voice, video programming and high-speed Internet See broadband. access to homes and businesses. The new ICs - a laser driver, receive and clock data recovery IC - were designed by researchers at Lucent's Bell Labs and will be incorporated in PON (Passive Optical Network) An optical point-to-multipoint access network. There are no optical repeaters or other active devices in a PON, hence the name "passive. components known as optical line terminals (OLTs) and optical networking Communications between computers, telephones and other electronic devices using light. An optical network is far more reliable and has far greater potential transmission capacity than networking in the electrical domain. See optical fiber. units (ONUs). OLTs are installed at service provider facilities such as telephone company switching centers or cable TV head-ends. ONUs is installed in homes, apartment and office buildings, or in neighborhood distribution hubs (in fiber-to-the-curb configurations). Communications signals travel between the OLT and ONU ONU Organisation des Nations Unies (French: United Nations) ONU Organização das Nações Unidas (Portuguese: United Nations) ONU Organizacion de Naciones Unidas (Spanish: United Nations) over optical fiber, with signals being routed from one OLT to as many as 32 ONUs. The term "passive" refers to the fact that there are no electrically powered components along the network path - only the endpoints (the OLT and ONUs) are powered. As a result, service providers consider PONs to be an economical and reliable solution for bringing digital video programming and high-speed Internet access over "the last mile" into homes and offices. |
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