optical cross-connect

(redirected from Photonic cross-connect)
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optical cross-connect

A network device used by telecom carriers to switch high-speed optical signals (OC-3, OC-12, OC-48, etc.). It differs from a digital cross-connect in that it deals with multiple high-speed signals that are switched in their entirety and not multiplexed together.

Also known as "OXCs," optical cross-connects work entirely at the optical layer and may be able to operate without having to convert to electrical and back again. Tellium, Inc., a Bellcore spin-off acquired by Zhone Technologies (www.zhone.com) in 2003, introduced the first optical cross-connect in 1998. See digital cross-connect.
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Feedback from equipment manufacturers and network operators indicates that the market for large port-count photonic cross-connect subsystems will not materialize for two years or more.
Alcatel's CrossLight photonic cross-connect will allow operators and service providers to achieve fast time-to-market for high-capacity and high-quality services.
Christian Reinaudo, president of Alcatel's Optics Group, said, "Alcatel has launched the CrossLight photonic cross-connect to meet its customers' ever-increasing capacity needs and take a worldwide leading position in this promising market.
Unveiled recently, the Alcatel CrossLight photonic cross-connect routes light through its all-optical switching matrix, eliminating the optical-electrical conversion typical in existing electrical solutions.
As the volume of data and voice traffic continues to climb across the world, photonic cross-connect systems will be key to the efficient and successful operation of communications networks," said Dana Cooperson, director of Optical Networking, RHK, Inc.
The CrossLight photonic cross-connect is part of Alcatel's Optinex family of solutions, which includes dense wavelength division multiplexing, multi-service node, optical gateway, photonic cross-connect and optical terabit router technologies.
P2R transponders can be used in existing and future Metro and Long-Haul DWDM systems, OADM, ROADM, Photonic Cross-Connects, CATV transport systems, and secure defense networks, where cost reduction, noise cancellation, wavelength flexibility, and bit-rate transparency are sought.
This is only one application for the LOA, which is currently being characterized by OEMs for use in receiver pre-amplifiers, in-line amplifiers, and unity-gain modules, as well as transmitter-boost applications, in equipment ranging from transponders to reconfigurable optical add-drop multiplexers (OADMs) to photonic cross-connects to next-generation, 40 Gbps receivers.