Comment on “GHz pulse train generation in fiber lasers by cavity induced modulation instability”

Abstract

a b s t r a c tA recent invited paper (Tang et al., 2014) reports the experimental observation of the generation of stable pulse trains in a ring fiber laser with repetition rates varying in the range between 3 GHz and 285 GHz. Contrary to what is stated, the theory published in that invited paper does not support the claim that the generation mechanism of the pulse train is the cavity induced modulation instability effect.