Large net-normal dispersion Er-doped fibre laser mode-locked with a nonlinear amplifying loop mirror

TL;DR

This paper presents an environmentally stable, all-PM-fibre Er-doped laser operating at 1550 nm with large net-normal dispersion, capable of producing externally compressible pulses around 500 fs, with results supported by simulations.

Contribution

It introduces a novel all-PM-fibre Er-doped laser with large net-normal dispersion and nonlinear amplifying loop mirror mode-locking, demonstrating stable operation and pulse compression.

Findings

Laser operates at 1550 nm with stable mode-locking.

Pulses can be externally compressed to 500 fs.

Experimental results match numerical simulations.

Abstract

We report on an environmentally stable, all-PM-fibre, Er-doped, mode-locked laser with a central wavelength of 1550 nm. Significantly, the laser possesses large net-normal dispersion such that its dynamics are comparable to that of an all-normal dispersion fibre laser at 1 {\mu}m with an analogous architecture. The laser is mode-locked with a nonlinear amplifying loop mirror to produce pulses that are externally compressible to 500 fs. Experimental results are in good agreement with numerical simulations.