Dark Pulse Emission of A Fiber Laser

TL;DR

This paper reports the observation and analysis of dark pulse emission in an all-normal dispersion erbium-doped fiber laser, highlighting the formation of dark solitons through experimental and numerical methods.

Contribution

It demonstrates the existence of dark pulses in fiber lasers and provides a numerical interpretation of dark soliton formation, expanding understanding of laser pulse dynamics.

Findings

Dark pulses can be emitted under certain conditions in the fiber laser.

Dark solitons are identified as the underlying mechanism for dark pulse formation.

Experimental and numerical results are consistent in explaining dark pulse dynamics.

Abstract

We report on the dark pulse emission of an all-normal dispersion erbium-doped fiber laser with a polarizer in cavity. We found experimentally that apart from the bright pulse emission, under appropriate conditions the fiber laser could also emit single or multiple dark pulses. Based on numerical simulations we interpret the dark pulse formation in the laser as a result of dark soliton shaping.