Lucent Technologies LambdaXtreme Alarm Messages And Trouble Clearing Manual page 402

WaveWrapper
WaveWrapper provides network management functions such as optical-layer performance
monitoring, error correction and ring protection on a per-wavelength basis.
WDM (Wavelength-Division Multiplexing)
Sending several signals through one fiber with different wavelengths of light.
WGR (Waveguide Grating Router)
Device used to take a mix of wavelengths and separate into the component wavelengths
WTR time (Wait To Restore time)
The WTR time ensures that a previous failed synchronization source is only again considered as
available by the selection process if it is fault free for a certain time.
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X XT Crosstalk X-talk
Undesired coupling from a circuit, part of a circuit, or channel to another.
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Y Y Coupler
A variation on the tee coupler in which input light is split between two channels (planar
waveguide) that branch out like a Y.
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Z Zero DSF (Zero Dispersion Shifted Fiber)
DSF where the zero dispersion point is shifted from 1310nm to 1550 nm. It is best suited for
applications involving single channel transmission at 1550 nm, providing the benefits of zero
dispersion as well as taking advantage of the lower attenuation wavelength.
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G L O S S A R Y
G L - 3 2
Lucent Technologies - Proprietary
See notice on first page
365-575-783R1.1
Issue 1, June 2002