AJIT KUMAR

Department of Physics, Indian Institute of Technology, Hauz Khas, New Delhi 110 016, India

Abstract.

Switching between the bistable soliton states in a doubly and inhomogeneously doped fiber system is studied numerically. Both the cases of lossless as well as lossy couplers are considered. It is shown that both up-switching (from the low state to the high state) and down-switching (from the high state to the low state) of solitons between bistable states are realizable, if the amplification of the input soliton for up-switching and the extraction of energy from it for down-switching are suitably adjusted.

Keywords:  Nonlinear optics; optical soliton; bistability; switching; directional coupler.

Pacs Nos.  42.65.Tg; 42.65.-k