Multi-segment all-fiber laser device for optical pulse generation

Here we introduce a new multi-segment all-fiber laser device

· that emits well-defined optical pulses and/or pulse trains of well-defined but adjustable wavelength without using any external measures such as active modulation or the introduction of a saturable absorber, · that contains several segments arranged in direction along the fiber comprising at least one active laser segment, typically two (or even more) active laser segments as well as propagation, grating, and nonlinear refraction segments, · where these segments assume a cooperative mode of operation created by new types of self-organization based on the gain-phase coupling of the segments, · where pulse shape, duration, repetition rate, and/or pulse power are adjusted or tuned by either the frequency detuning of the laser segments, the propagation time delays between the segments, the nonlinear phase changes induced by the segments, or by a combination of these parameters.

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