Chaos appears in the whole process of fiber-optic signal propagation with
one external perturbation due to the absence of damping. Via adding a proper controller,
chaos cannot be suppressed when the controller’s strength is weak. With the increase
of the controller strength, the fiber-optic signal can stay in a stable state. However,
unstable phenomenon occurs in the propagation of the fiber-optic signal when
the strength exceeds a certain degree. Moreover, we discuss the parameters’
sensitivity to be controlled. Numerical results show that vibration, oscillation
and escape can occur during the transmission of optic signals with different
parametric regions.
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