Comparison of pulse evolutions in low and ultra-large anomalous dispersion mode-locked fiber lasers |
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Authors: | Duan L N Liu X M Wang L R Mao D Wang G X |
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Institution: | 1.State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an, 710119, China ; |
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Abstract: | We have investigated and compared the pulse evolutions in low and ultra-large anomalous dispersion erbium-doped fiber lasers
mode-locked by the nonlinear polarization rotation technique. Two lasers deliver the pulses that exhibit quite distinct characteristics
such as pulse duration, spectral width, and spectral sidebands. Experimental observations show that the spectral width decreases
from several nanometers to less than one nanometer whereas pulse duration extends about three times by changing the cavity
dispersion from −0.03 to −15.50 ps2. The solitons in ultra-large anomalous fiber laser show dips in the optical spectrum, which is quite distinct from that of
conventional solitons observed in low anomalous regime. |
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