N. Pandit et al., 350-FS PULSE GENERATION FROM AN ERBIUM FIBER RING LASER MODE-LOCKED USING NONLINEAR POLARIZATION ROTATION, J. mod. opt., 41(1), 1994, pp. 11-14
Using intensity-dependent polarization rotation as a passive mode-lock
ing mechanism, pulses as short as 350 fs have been generated in an erb
ium fibre loop laser. Even in the cavities optimized for minimum-pulse
-width generation, the response of the soliton structures to the perio
dic amplification gave rise to the now characteristic spectral side ba
nds.