Dark fiber
Dark fiber is optical fiber infrastructure (cabling and repeater) that
is currently in place but is not being used. Optical fiber conveys information
in the form of light pulses so the "dark" means no light pulses are being
sent. Dark fiber can refer to infrastructure that is in place but not yet
ready to use. For example, some electric utilities have installed optical
fiber cable where they already have power lines installed in the expectation
that they can lease the infrastructure to telephone or cable TV companies
or use it to interconnect their own offices. To the extent that these installations
are unused, they are described as dark.
"Dark fiber service" is service provided by local exchange carriers
(local exchange carrier) for the maintenance of optical fiber transmission
capacity between customer locations in which the light for the fiber is
provided by the customer rather than the LEC.
I took that definition on www.whatis.com:
http://www.whatis.com/WhatIs_Definition_Page/0,4152,211891,00.html
bahadir korkmaz wrote:
hi.
what is dark fiber?
i found some sites that says dark fiber means unused fiber.
is it so?
i think dark fiber must be different then unused fiber.
i mean for example. 10gigabit ethernet runs on dark fiber.
dark must be something related to bandwidth or wavelength.if someone knows dark fiber definition i ll be happy.
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