What does WC stand for?

To resolve this contention one will have to either temporarily store some of the packets in a buffer, or to convert wavelengths to some available wavelengths by wavelength converters [11-13].

ACQUISITION STRATEGIES Several vendors are working on optical wavelength converters, tunable lasers and other components for the all-optical network, but the total solution, including the management systems, remains elusive.

The key issue to realize such systems is to develop ultra-fast optical devices such as light sources, all-optical gates and wavelength converters.

Highlights of NEC's patents received in 2001 include: - Voice Coding and Decoding System (audio coding) (USP 6208957) - Apparatus for growing a semiconductor crystal (semiconductor) (USP 6221156) - Wavelength converter and wavelength conversion method (networks) (USP 6323992) - Flame retardant polycarbonate resin composition (environment) (USP 6284824) - Hyper-media document management system having navigation mechanism (software) (USP 6212533) - Method of forming a heterojunction of a carbon nanotube (nano-technologies) (USP 6203864) NEC Corporation holds more than 70,000 patents worldwide.

Initial applications include wavelength converters, 3R Regenerators, and OTDM Transceivers.

com) develops tunable lasers, transceivers, and wavelength converters for DWDM networks.

The components include 1) Alcatel 1901 ICM, an optical wavelength converter which shifts the digital modulation from one optical carrier to another, 2) Alcatel 1905 LMI, a high power CW source that provides the new wavelength, and 3) Alcatel 1924 OFA flat-gain optical fiber amplifier, which compensates for losses due to the first stages of the cross connect.

This system features local optical tributaries, all-optical wavelength converters, optical tunable filters, internal fiber amplifier stage, semiconductor optical amplifier (SOA) space switches, numerous signal monitoring sensors and a performance monitoring function.