Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 26, Issue 24, Pages 2450-2453Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2014.2358496
Keywords
Fiber laser; soliton molecule; graphene; trapping
Funding
- National Natural Science Foundation of China [61378036, 61307058, 11304101, 11074078, 11474108]
- Ph.D. Start-Up Fund of Natural Science Foundation of Guangdong Province, China [S2013040016320]
- Zhujiang New-Star Plan of Science and Technology, Guangzhou, China [2014J2200008]
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We reported on the trapping of soliton molecule in a passively mode-locked ytterbium-doped fiber laser with a microfiber-based graphene saturable absorber (GSA). By virtue of the highly nonlinear effect of microfiber-based GSA, the multipulse formation, such as the soliton molecule, is greatly enhanced despite of the all-normal dispersion regime. Depending on the cavity parameter selections, it was found that the conventional multisoliton could be reconstructed and then evolve into the soliton molecule. The soliton molecule trapping of two polarization components with a 0.65-nm wavelength separation was observed, which propagated as a group-velocity locked vector soliton despite of the cavity birefringence. The obtained results provide an enhanced understanding of dynamics of the soliton molecule.
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