We investigate and provide experimental results as well as characteristics of NOLM’s in several different setups. The all-fiber laser system used for testing produced femtosecond pulses with a positive chirp. We present reflection as a function of input power and as a function of the coupler’s coupling. Also, relevant spectral characteristics are shown. These results may be useful in further development of fiber laser systems and other applications.
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Witold Stępień, Jan Szczepanek, Tomasz Kardaś, Michał Nejbauer, Czesław Radzewicz, Yuriy Stepanenko, "Study on parameters of fiber loop mirrors as artificial saturable absorbers," Proc. SPIE 10094, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII, 100941N (17 February 2017);