dispersion-shifted fiber
A single-mode optical fiber that has its minimum-dispersion wavelength shifted, by the addition of dopants, toward its minimum-loss wavelength. Synonym EIA Class IVb fiber.
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dispersion-unmodified fiber
Synonym dispersion-unshifted fiber.
dispersion-unshifted fiber
A single-mode optical fiber that has a nominal zero-dispersion wavelength in the
1. 3-m transmission window. Synonyms dispersion-unmodified fiber, EIA Class IVa fiber, nonshifted fiber.
display device
An output unit that gives a visual representation of data.
dissolve
In television, video, or motion-picture programming or production, a process in which one scene is gradually faded out while simultaneously being replaced by another.
distance learning
Synonym teletraining.
distance measuring equipment (DME)
In radio location systems, equipment that ascertains the distance between an interrogator and a transponder. [From Weik '89]
distance training
Synonym teletraining.
distinctive alerting
Special ringing or call-waiting tone patterns sent by the network to convey information to a customer installation (CI) about the called number, the calling number, or the status of an automatic call request. [T1.401-1998]
distinguished name
[A] globally unique identifier representing an individual's identity. [INFOSEC-99]
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