WDM


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WDM

WDM

WDM

(1) (Wavelength Division Multiplexing) A technology that uses multiple lasers and transmits several wavelengths of light (lambdas) simultaneously over a single optical fiber. Each signal travels within its unique color band, which is modulated by the data (text, voice, video, etc.). WDM has dramatically increased the carrying capacity of the fiber infrastructure of the telephone companies and other carriers. Also known as "dense WDM" (DWDM), vendors have introduced systems that can support hundreds of wavelengths, each carrying 10 Gbps. That means terabits of data per second can travel over one optical strand, thinner than a human hair. Contrast with TDM. See CWDM and fiber optics glossary. See also FDM.

(2) (Win32 Driver Model) A device driver architecture from Microsoft that consolidates drivers for Windows 95/98 and subsequent versions of Windows. It allows a hardware vendor to write one driver for its peripheral device that works with all 32-bit versions of Windows. See driver.
References in periodicals archive ?
INS looked for a WDM system that would support this variety of traffic types, as well as traditional SONET.
The report tracks DWDM long haul terrestrial, WDM metro, SONET/SDH, and optical switch equipment.
The dispersion compensation, combined with wavelength tunability across the entire WDM C-band, provides advantages for both metro and long haul networks.
On January 11th, WDM Group launched its new website, dressed in what is now its corporate identity.
The WDM market growth isn't slowing down," said Jimmy Yu, Vice President of Optical Transport research at Dell'Oro Group.
In choosing the TM-Series platform, Digiweb has selected the WDM platform with the widest range of functionality available in any WDM system.
Areas of focus will include WDM components, lasers and detectors, modulators, amplification devices, dispersion compensation devices, transmission modules and ICs.
We continue to witness a favorable environment for Optical Transport equipment on a global basis as the urgency to deploy systems with scalability and efficiency highlights WDM transport as a rapidly growing solution for service providers," said Shin Umeda, Vice President for Optical Transport research at Dell'Oro Group.
The WDM 5000 Series is finding success with customers who require high speed acquisition, but also need to quickly process the acquired data on-board the instrument and stream results rapidly over the PCI Express interface.
MRV has received an Interoperability Assessment and a Standards Conformance certification from the JITC for the Lambda Driver[R] scalable wavelength division multiplexing (WDM) system; Fiber Driver[R] systems for services demarcation, WDM and media conversion; and its LX4000T, the latest in its series of console servers which delivers comprehensive out-of-band networking, supporting serial services, power management and sensor management features.
June 2 /PRNewswire/ -- Guzik Technical Enterprises today announced the availability of the two new high-speed waveform digitizers, the WDM 5121 and WDM 5082.