Vcy. So et al., MEASURING CHROMATIC DISPERSION AND MODAL INTERFERENCE WITH AN OPTICALTIME-DOMAIN REFLECTOMETER, Optical engineering, 32(9), 1993, pp. 2110-2113
Introducing a wavelength-tunable source and a wavemeter, make it possi
ble to modify a conventional optical time-domain reflectometer (OTDR)
to measure chromatic dispersion and modal interference levels in addit
ion to transmission attenuation, return loss, and fiber length.