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channel spacing

   Also found in: Wikipedia 0.01 sec.

channel spacing

The amount of bandwidth allotted to each channel in a communications system that transmits multiple frequencies such as fiber optics. It is measured as the spacing between center frequencies (or wavelengths) of adjacent channels. See guard band.

Channel Spacing in Optical Fibers
The first 10 Gbps example with 50 GHz spacing has a slight signal overlap, but with 100 GHz, there is none. The first example provides more bandwidth, but the overlap could be enough to cause significant crosstalk. (Illustration courtesy of Jeff Hecht.)


channel spacing [′chan·əl ‚spās·iŋ]
(communications)
The difference in frequency between successive radio or television channels.


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The radio itself is tuned via software, so it can be programmed to find signals mechanically tuned radios can't, and the variable IF filter algorithm automatically adjusts to either 100 KHz (European) or 200 KHz (North American) channel spacing.
Fiberspace is dedicated to providing high performance, low-cost products for metro and long haul applications requiring very close channel spacing.
 
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