'Dark fiber' is the term used to talk about fiber optic circuits also called 'dark fiber network' that were pulled at the time by any entity or company and that are not in use.The optical fiber is composed of a very fine thread of transparent material (glass or plastic materials) and is usually used as a means to transmit data.
This type of connection is the most valued in the world of telecommunications , since it allows to send a large amount of data over a long distance without this sending being affected by any type of electromagnetic interference.
Thus, when an operator, company or telecommunications entity pulls its fiber optic network makes a large investment because a lot of permits must be requested, works must be undertaken to be able to channel and deploy the wiring. So, if in the future that company wanted to expand the capacity of those already deployed networks, it would have to re-pull and connect new cables.
As it is an expensive operation, what these large companies and companies usually do is to make a greater deployment of this fiber optic cabling so that, in the case of an extension being necessary, they can undertake it in a more economically profitable way.
In this way, it could be said that this 'dark fiber' acquires great commercial interest for many companies with offices far removed from each other that may need to establish an interconnection between their work centers. These centers rent or buy 'dark fiber' from telecommunications companies to cover these momentary or structural needs.
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