White Papers

Limitations of Transmission Distances Over Multimode Fiber

Overview Multimode fiber simply refers to the fact that numerous modes or light rays are carried simultaneously through the waveguide. One key characteristic of a multimode fiber is its modal bandwidth. It represents the capacity of a fiber to transmit a certain amount of information over a certain distance and is expressed in MHz/km. An intuitive model is to consider that the signal consists in a number of delayed lines, each of which corresponds to a particular mode. This paper details the limitations in transmission distances suffered by laser-based Gigabit networks operating near a wavelength of 1300nm over multimode fibers. The discussion focuses on the relationship between the actual fiber modal bandwidth and various launch conditions.

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Publisher: Cisco Systems
File Format: PDF
Date Published: Jun 12, 2008
Format: White Papers
Topics: Fibre

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