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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It released the Petabit Photonic Cross-Connect (PPXC) prototype and the all-optical cross-connect network architecture, which can be applied to all topologies to support the application of the optical cross-connect technology, assisting customers to efficiently handle the upcoming digital flood.
ZTE Corporation, a provider of telecomms equipment and network solutions, has launched the next-generation iWDM (intelligent Wavelength-Division Multiplexing) solution integrated with Wavelength Switched Optical Network (WSON), Photonic Cross-Connect (PXC), L2 switch and Optical Transport Network (OTN) technologies to help operators address present and future network transmission challenges.
As a stand-alone product the CrossLight photonic cross-connect will, according to Alcatel, offer the world's largest capacity levels in addition to reducing carrier and service provider network costs by up to 40%.