Investigation of different configurations and operation regimes of fiber pulse generators based on nonlinear spectral re-shaping

In this work, we investigate the operation of linear fiber pulse generator circuits, based on self-phase modulation-induced spectral broadening and offset-alternating spectral filtering. The influence of fiber chromatic dispersion and other parameters of the circuit for stable pulse generation and the characteristics of generated pulses are described by numerical calculations and confirmed by experiments. Self-starting pulse generation is demonstrated experimentally, and conditions allowing the achievement of self-starting are discussed.