An error was made in Fig. 4 in our article [Appl. Opt. 52, 8465 (2013) [CrossRef]  ]. We have corrected the error and present a revised Fig. 4 based on the original experimental results.

© 2014 Optical Society of America

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  1. J. Zhao, P. Yan, and S.-C. Ruan, “Observations of three types of pulses in an erbium-doped fiber laser by incorporating a graphene saturable absorber,” Appl. Opt. 52, 8465–8470 (2013).

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Fig. 4.
Fig. 4. (a) Oscilloscope trace of a dark pulse train. (b) Typical output spectrum with the dark pulse operation regime.