What is another word for dark fiber?
Pronunciation: [dˈɑːk fˈa͡ɪbə] (IPA) 
Dark fiber refers to the unused fiber-optic cable and infrastructure that can be leased or sold to telecommunications companies or businesses. The term "dark fiber" is often used interchangeably with other synonyms, such as unlit fiber, unused fiber, or dormant fiber. These terms all refer to the same thing: fiber-optic cables that have been installed but are not being utilized. Other synonyms include passive fiber, idle fiber, and non-active fiber. These terms are commonly used in the telecom industry to describe fiber-optic cables that are available for use by other companies. Regardless of the term used, dark fiber is a valuable resource that can be leveraged to expand and improve telecommunications networks.
