We analytically and numerically analyze the occurrence of modulational instability in fibers with periodic changes in the group-velocity dispersion. For small variations, a set of resonances occurs in the gain spectrum. However, large dispersion variations eliminate these resonances and restrict the bandwidth of the fundamental gain spectrum. This research has been motivated by the adoption of dispersion management techniques in long-haul optical communications.
Bibliographical noteTopical Meeting on Nonlinear Guided-Wave Phenomena Technical Digest
- modulational instability
- dispersion management technique
- optical communication