Large net-normal dispersion Er-doped fibre laser mode-locked with a   nonlinear amplifying loop mirror
  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. 
Patrick Bowen, Miro Erkintalo, and Neil G. R. Broderick
physics.optics