unit of dispersion is:

(picosecond)/ nanometer kilometer

Dispersion affects optical fibers in the sense that dispersion causes a disruption in the frequency of lights waves and can focus the wavelength nature of light.

the three types of dispersion are:

1. Intermodal Dispersion

2. Chromatic Dispersion

3. Waveguide Dispersion

the three types of dispersion are:

1. Intermodal Dispersion

2. Chromatic Dispersion

3. Waveguide Dispersion

In a multimode fiber modal dispersion causes each mode to have a different velocity and reach to the end of the fiber at a different time. This will cause inter-symbol interference (ISI) which means that we need to send data at lower rates in order to prevent ISI. Lower rates means a reduction in bandwidth.