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dark fiber |
Also found in: Wikipedia | 0.04 sec. |
dark fiber(1) Also known as "unlit fiber," it is optical fiber that is laid in the ground, but not used. During the late 1990s, so much fiber had been installed worldwide in anticipation of Internet demand that there is still a huge amount of fiber that has never been lit. The projected demand has also been curbed by the improvements in WDM technology, which allows more channels to be transmitted in a single fiber strand. Contrast with lit fiber. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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If you are looking to interconnect your data centers for disaster recovery, "follow the sun" capacity replication or to achieve a logical "single worldwide site", the now classical option of dark fibre with DWDM (Dense Wave Division Multiplexing) is now supplemented with a more flexible, anywhere-to-anywhere MAN or WAN transport capability. In the longer term, where Data Centres are short of space, dark fibre links will be used for connection between centres and cities. Very affordable shared access and the ability to unbundle dark fibre for connecting to distribution frames have created a high level of DSL competition between alterative operators. |
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