Tk. Chiang et al., CROSS-PHASE MODULATION IN DISPERSIVE FIBERS - THEORETICAL AND EXPERIMENTAL INVESTIGATION OF THE IMPACT OF MODULATION FREQUENCY, IEEE photonics technology letters, 6(6), 1994, pp. 733-736
We investigated, theoretically and experimentally, the impact of modul
ation frequency on cross-phase modulation (XPM) in dispersive fibers.
A simple expression for the XPM index has been derived and verified by
experiment. The XPM index is found to depend on fiber length, fiber c
hromatic dispersion, wavelength separation between the signal and the
pump, and the intensity modulation frequency. At high modulation frequ
encies, the XPM index is inversely proportional to the product of the
modulation frequency and wavelength separation.