Broadband femtosecond fiber laser with ultrahigh repetition rate in the telecommunication range

A new variant of the fiber laser for generation of ultrashort pulse bunches and sequences with repetition rate in the range of 8-260 GHz, which combines a nonlinear amplifying loop mirror and a comb spectral filter for stabilization of the pulse separation, was demonstrated. We showed that a well-ordered and equidistant structure of the pulse sequence is maintained on a nanosecond timescale.