Abstract

The optimal all-optical switching, amplification, and temporal compression of femtosecond solitons by means of a nonlinear erbium-doped twin-core fiber may be achieved by suitably tapering the linear coupling strength. We analytically show that, irrespective of the soliton self-frequency shift, tapering may in principle reduce the switching power threshold to arbitrarily low values. A substantial reduction is also demonstrated in a practical case in which the full complex susceptibility of the erbium doping and the Raman response function are considered.

© 1992 Optical Society of America

Adiabatic femtosecond soliton active nonlinear directional coupler

F. S. Locati, M. Romagnoli, A. Tajani, and S. Wabnitz
Opt. Lett. 17(19) 1394-1396 (1992)

Direct time integration of Maxwell’s equations in nonlinear dispersive media for propagation and scattering of femtosecond electromagnetic solitons

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Role of pump-induced dispersion on femtosecond soliton amplification in erbium-doped fibers

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Soliton switching in an erbium-doped nonlinear fiber coupler

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