Cross-Phase-Modulation in Optical Fibers.
01 January 1987
When pulse pairs co-propagate in a fiber, each pulse chirps the other through cross phase modulation (XPM). In particular, XPM causes spectral broadening of signal pulses during Raman or parametric optical pulse amplification. We have studied XPM experimentally in the Fiber Raman Amplification Soliton Laser. A simple model, which includes only XPM and the difference in group velocities between the pump and signal pulses, explains qualitatively the experimentally observed spectra.