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A fiber-optic cable, also known as an optical-fiber cable, is an assembly similar to an electrical cable but containing one or more optical fibers that are used to carry light. The optical fiber elements are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable is used.
A cable reel trailer with conduit that can carry optical fiber Multi-mode optical fiber in an underground service pit. An optical fiber cable consists of a core, cladding, and a buffer (a protective outer coating), in which the cladding guides the light along the core by using the method of total internal reflection.
As part of the change, US service providers are required to offer customers an alternative to landlines and use devices to convert analog signals to digital, either through fiber optic cables or ...
All cables presently in service use fiber optic technology. Many cables terminate in Newfoundland and Ireland, which lie on the great circle route from London, UK to New York City, US. There has been a succession of newer transatlantic cable systems. All recent systems have used fiber optic transmission, and a self-healing ring topology.
HAW-1 (Hawaii No. 1) was the first submarine telephone cable laid between Hawaii and the mainland United States. HAW-1 was laid in 1957, and consisted of two cables, each transmitting in one direction over 36 channels, with an individual length of 2,625 Nmi (4,862 km). The cable spans between Hanauma Bay, Oahu, Hawaii and Point Arena, California.
Many microscopes use fiber-optic light sources to provide intense illumination of samples being studied. Optical fiber is also used in imaging optics. A coherent bundle of fibers is used, sometimes along with lenses, for a long, thin imaging device called an endoscope, which is used to view objects through a small hole. Medical endoscopes are ...
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