Enter the total group velocity dispersion and the length of the medium into the calculator to determine the group delay dispersion.
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Group Delay Dispersion Formula
The following equation is used to calculate the Group Delay Dispersion.
GDD = GVD * L
- Where GDD delay is the Group Delay Dispersion(fs^2)
- GVD is the group velocity dispersion (fs^2/mm)
- L is the length of the medium (mm)
To calculate the group dispersion delay, multiply the group velocity dispersion by the medium length.
What is a Group Delay Dispersion?
Definition:
A group delay dispersion is defined as the frequency dependency of the group delay.
How to Calculate Group Delay Dispersion?
Example Problem:
The following example outlines the steps and information needed to calculate Group Delay Dispersion.
First, determine the group velocity dispersion. In this example, this is provided as 100 ft^2/mm.
Next, determine the medium length. The length of the medium, in this example, is measured to be 10mm.
Finally, calculate the Group Delay Dispersion using the formula above:
GDD = GVD * L
GDD = 100*10
GDD = 1,000 fs^2.
