title: All-optical flip-flop based on nonlinear effects in fiber Bragg gratings.
abstract: We demonstrate a novel design for a passive all-optical R-S flip-flop with separate set-rest ports based on nonlinearity in the fiber Bragg gratings (FBGs). The spectrum of FBGs in the presence of the Kerr effect is investigated, and cw and transient characteristics of nonlinear-induced bistability of the passive distributed feedback structures are studied by numerical solving of coupled-mode equations. It is shown that a pulse with a pulsewidth of 0.15 ns can switch the state of the flip-flop.
authors.affiliation: Iranian National Center for Laser Science and Technology, Tehran, Iran. karimi@physweb.ir
authors.forename: Mohammad
authors.initials: M
authors.lastname: Karimi
authors.forename: Majid
authors.initials: M
authors.lastname: Lafouti
authors.forename: Ali Asghar
authors.initials: AA
authors.lastname: Amidiyan
authors.forename: Jamshid
authors.initials: J
authors.lastname: Sabbaghzadeh