WDM


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WDM

WDM

WDM

(1) (Wavelength Division Multiplexing) A communications technology that transmits several wavelengths of light (lambdas) simultaneously over a single optical fiber. Using multiple lasers, each signal travels within its unique color band modulated by the data.

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. WDM 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 ?
Due to these significant differences in the structures of transmission systems for long-haul networks and access networks, it is not correct to assume that the impact of introducing the mixed configurations in WDM-PON access networks will be the same as the impact of introducing it in long-haul WDM networks that have already been investigated.
The bit rate is 10 Gbps for each user and the bandwidth of WDM multiplexer is 50 GHz.
When designing a WDM network, the optical signal-to-noise ratio (OSNR) tends to be the major limiting factor (Figure 2).
WDM Group is headquartered in Carlsbad, California.
The WDM optical market continues to grow due to the increased need for high bandwidth services," said Jim Nevelle, CEO of Sorrento Networks.
Photonic integration technology allows the integration of opto-electronic components of a WDM system such as lasers, modulators, detectors, multiplexers, and de-multiplexers into a centimeter-sized PID chip.
Marable enters WDM Group at a crucial time in the company's short history.
As WDM technology has matured, it has also become more cost effective.
By continuing to make substantial inroads at major carriers and becoming the #1 metro WDM and ROADM vendor in North America, Fujitsu is clearly the leader in 2008," said Ron Kline, Research Director of Optical Networks: North America at Ovum.
As operators' optimal partner for NG WDM networks, Huawei has helped construct more than two hundred 100G commercial WDM networks.
8220;I am excited to become an instrumental component to the vision, and financial strategy of WDM Group,” said WDM Group CFO Nathan Weber.
WDM Group is a global media company offering a diverse portfolio of interactive digital publications covering many different industries such as manufacturing, construction, supply chain, and more.