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Glossary

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Term Main definition
Waveguide dispersion
That part of the chromatic dispersion (spreading) that occurs in a single-mode fiber as some of the light passes through the cladding and travels at a higher velocity than the signal in the core, due to the cladding
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Waveguide scattering
The variations caused by subtle differences in the geometry and fiber index profile of an optical fiber.
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Wavelength
(1) The distance between two corresponding points in a series of waves. (2) With respect to optical fiber communications, the distance an electromagnetic wave travels in the time it takes to oscillate through a complete cycle. Wavelengths of light are measured in nanometers or micrometers. Wavelength is preferred over the term frequency when describing light.
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Wavelength isolation
A wave division multiplexer
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Wavelength variance
The variation in an optical parameter caused by a change in the operating wavelength.
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Way

Way- The amount of possible contacts on a connector.  For instance a D9W has 9 pins and therefore there are 9 possible connections.

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WDM Wavelength division multiplexing

A method of carrying multiple channels through a fiber at the same time (multiplexing) whereby signals within a small spectral range are transmitted at different wavelengths through the same optical-fiber cable. See also frequency division multiplexing.

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Wideband

A unit covering 2G and 3G, also see Broadband

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Window
In optical transmission, a wavelength at which attenuation is low, allowing light to travel greater distances through the fiber before requiring a repeater.
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Wire center
(1) Another name for a wiring or telecommunications closet. (2) A telephone company building where all local telephone cables converge for service by telephone switching systems. Also called central office or exchange center.
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Wire cross-connect
A piece of equipment or location at which twisted-pair cabling is terminated to permit reconnection, testing, and rearrangement. Cross-connects are usually located in equipment rooms and telecommunications closets and are used to connect horizontal cable to backbone cable. Wire cross-connects typically use a 66- or 110-block. These blocks use jumpers to connect the horizontal portion of the block to the backbone portion of the block.
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Wire fault
A break in a segment or cable that causes an error. A wire fault might also be caused by a break in the cable
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Wireless bridge
A wireless bridge is a hardware component used to connect two or more network segments (LANs or parts of a LAN) that are physically and logically (by protocol) separated. It does not necessarily always need to be a hardware device, as some operating systems (such as Windows, Linux, Mac OS X, and FreeBSD) provide software to bridge different protocols.
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Work area
The area where horizontal cabling is connected to the work area equipment by means of a telecommunications outlet. A telecommunications outlet serves a station or desk. See also work area telecommunications outlet.
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Work area cable
A cable used to connect equipment to the telecommunications outlet in the user work area. Sometimes called a patch cable or patch cord.
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