Kharitonov, SvyatoslavBillat, AdrienBrès, Camille-Sophie2016-08-112016-08-112016-08-11201610.1364/OL.41.003173https://infoscience.epfl.ch/handle/20.500.14299/128490WOS:000379681400006A nonlinear coefficient of 3.6–4.1 W−1 km−1 and group velocity dispersion of −20 ps2∕km of a commercial corepumped thulium-doped fiber have been evaluated using degenerate four-wave mixing at 2 μm. The anomalous dispersion behavior of the fiber has been confirmed by linear measurements with an all-fiber Mach–Zehnder interferometer (MZI). Additionally, no pump-induced dispersion changes due to excitation of Tm3 cations have been detected. These characteristics make these fibers attractive for pulsed fiber laser applications. A nonlinear polarization rotation mode-locked laser involving nonlinear polarization evolution directly in the doped fiber is demonstrated.text::journal::journal article::research article