Abstract
A nonlinear mirror formed by a nonlinear twin-core fiber recoupled to itself in a loop configuration is used as a mode-locking element. Under repeated amplification in an external gain medium of finite bandwidth, we observe the formation and stabilization of a train of solitons. The main part of the mode-locking mechanism is achieved by the solitonic effect that occurs within the nonlinear mirror with the stabilization permitted by the linear coupling properties of the twin-core fiber that prevents secondary pulses to develop and interact with the main circulating pulse.
© 1993 Optical Society of America
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