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Observation of soliton molecules with independently evolving phase in a mode-locked fiber laser

: Ortac, B.; Zaviyalov, A.; Nielsen, C.K.; Egorov, O.; Iliew, R.; Limpert, J.; Lederer, F.; Tünnermann, A.


Optics Letters 35 (2010), No.10, pp.1578-1580
ISSN: 0146-9592
Journal Article
Fraunhofer IOF ()

We report the experimental generation of two-soliton molecules in an all-polarization-maintaining ytterbium-doped fiber laser operating in the normal dispersion regime. These molecules exhibit an independently evolving phase and are characterized by a regular spectral modulation pattern with a modulation depth of 80% measured as an averaged value. Moreover, the numerical modeling confirms that the limited modulation depth of the spectrum is caused by the evolution of the phase difference between the pulses.