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

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 highlynonlinear 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 <; -140 dBc/Hz, and the Allan deviation of the repetition frequency does not exceed 1.3·10
^-8
with a time averaging window of ~100 s.