Analysis of coherent and incoherent interactions of amplitude shifted solitons in optical fibres

Nonlinear interaction between pulses can severely reduce the bit-rate of an optical communication system. One way of reducing this interaction is amplitude shifting of consequtive pulses. In the present work a detailed analytical and numerical investigation is made of the coherent and incoherent interactions between two soliton pulses of unequal amplitudes. For the case of coherent interaction the obtained expressions for the pulse parameters in terms of initial phase and amplitude differences give a clear and explicit prediction of the reduction of the interaction strength for unequal soliton amplitudes. A comparison with numerical simulation results shows good agreement. For the case of incoherent soliton interaction it is found that the dependence of the interaction strength on the amplitude difference is weak.

NATURVETENSKAP Fysik Atom- och molekylfysik och optik hsv//swe
NATURAL SCIENCES Physical Sciences Atom and Molecular Physics and Optics hsv//eng
Computer simulation
Inverse problems
Nonlinear equations
Nonlinear optics
Numerical analysis
Optical communication
Optical fibers
Oscillations
Perturbation techniques
Variational techniques
Amplitude shifting
Coherent soliton interaction
Incoherent soliton interaction
Inverse scattering transform
Soliton pulses
Solitons

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