|Bistable soliton states and switching in doubly inhomogeneously doped fiber couplersAJIT 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
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