Glossary
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 |
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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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