Multibound Soliton Formation in an Erbium-Doped Ring Laser With a Highly Nonlinear Resonator

Abstract

We have studied the generation of low-noise ultrashort multibound solitons in the telecommunication spectral window in an erbium-doped all-fiber ring laser with a highly-nonlinear resonator mode-locked by a nonlinear polarization evolution effect. The multibound soliton generation is obtained with more than 20 bound dechirped pulses with a duration of ~ 240 fs at a repetition rate of ~ 11.3 MHz (with a signal-to-noise ratio of ~ 73.3 dB), the relative intensity noise is $\sim 1.3\cdot 10^{\mathbf {-8}}$ with a time averaging window of ~ 100 s.