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There are currently 12 terms in this directory beginning with the letter D.
Optical fiber that has already been laid out but is not being used for transmission. This dark fiber provides potential for future network scale up or can be leased to other carriers.
Links used to connect one datacenter with another. They are usually on the range of a few kms or tens of kmsDCI
Data communication: the industry that focuses on installating and maintaining links between datacenters or inside a data center.
Technologies that provide the interface between the provider's access network and the end customer's on-premises wiring / network.DEMARC
Dense Wavelength Division Multiplexing
A WDM standard that has much narrower channel space than DWDM, with 0.4 or 0.8 channel spacing. It is used for links in which carriers want to maximize their fiber capacity or very dense access networks.DWDM
A signal that varies discontinuously and is just sampling (not a full representation) of a physical quantity.
Digital Signal Processor
The component of a communication systems that codes or decodes digital data from a signal. It's necessary for coherent communications.DSP
An electronic component that decodes a digital signal of 0s and 1s and transforms it into a continuous analog signal, such as those of audio or laser light.DAC
A photonic approach in which the components are manufactured separately and then interconnected via optical fiber. This is contrast to integrating the photonic components on a single chip.
Distributed Access Architecture
Architectures that decentralize the access network of a provider, splitting the headend into several nodes.