Triple-lobe wavelength fiber laser with a composite-state soliton regime

Abstract We report the experimental study of triple-lobe wavelength double-clad co-doped Er:Yb fiber laser operating with a composite-state soliton regime. The passively mode-locked emission is achieved through nonlinear polarization rotation (NPR) technique. three-lobe wavelengths oscillation, centred at 1567 nm, 1585 nm, and 1616 nm, attributed to two phenomena; filtering based on intensity-dependent linear loss cavity impacting population inversion (gain). Moreover, by fine adjustment controllers, this complex regime still can be switched into harmonic states. This work shows novel operation regime, which could help understanding composite dynamics in lasers useful for different applications division multiplexed transmission systems optical signal processing.