Thursday, May 7, 2020

The propagation losses are typically specified in units

The propagation losses are typically specified in units of dB/km (decibels per kilometer). Those apply without significant bending of the cable, so that only some level of microbend losses occurs, apart from absorption and scattering losses.

Applications of Fiber Cables
Optical fiber cables are often used in optical fiber communications. Large and strong cables are used for onshore and submarine data transmission, often bridging distances of thousands of kilometers (using fiber amplifiers). Smaller fiber patch cables can be used e.g. to connect the components of fiber-optic data links within buildings.
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The key advantages of fiber-optic cables over electrical data cables are the enormous transmission bandwidth and the low losses (particularly in the 1.5-μm wavelength region), but one may also profit from the immunity against electromagnetic interference and from the possibility to have fully insulating cables.

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