Modulation instability induced by periodic power variation in soliton fiber ring lasersZ. C. Luo, W. C. Xu, C. X. Song, A. P. Luo and W. C. ChenEur. Phys. J. D, 54 3 (2009) 693-697DOI: https://doi.org/10.1140/epjd/e2009-00164-y