Observation of 550 MHz passively harmonic mode-locked pulses at L-band in an Er-doped fiber laser using carbon nanotubes film

Huang Qianqian¹, Zou Chuanhang¹, Wang Tianxing^{1, 5}, Araimi Mohammed Al^{2, 3, 4}, Rozhin Aleksey^{2, 3}, Mou Chengbo^{1, †}

(color online) The characteristics of CNTs-PVA film: (a) the linear absorption spectrum, (b) the measured Raman spectrum, and (c) the nonlinear transmission.