Abstract

With a view to the realisation of ultrahigh-speed optical fibre communication systems, subpicosecond optical solitons are required. However, the stable propagation of such ultrashort pulses becomes very difficult because of the soliton self-frequency shift (SSFS) caused by the intrapulse Raman scattering (ISRS) [1], even though we neglect the effect of fibre loss. Blow et al. [2] predicted that the SSFS can be compensated by the bandwidth limited optical gain in fibre amplifiers. Subsequently, Nakazawa et al [3] reported for the first time trapping of femtosecond solitons by the bandwidth-limited gain of an erbium-doped optical fibre amplifier (EDFA).

© 1996 Optical Society of America