Modal bandwidth, in the discipline of
telecommunications
Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than that ...
, refers to the maximal signaling rate for a given distance or – the other way around – the maximal distance for a given signaling rate. The signaling rate can typically be measured in
MHz, and the modal bandwidth is the product of bandwidth and distance (typically expressed in MHz·km). For a cable with a certain modal bandwidth, the maximal frequency can be doubled when the distance is halved, and conversely.
The modal bandwidth is derived from the
modal dispersion of the fiber and the spectral linewidth of the laser:
:
Modal bandwidth is sometimes referred to as EMBc.
{{DEFAULTSORT:Modal Bandwidth
Telecommunication theory