Switchable dual-band generation of femtosecond pulses in a mode-locked Erbium-doped fiber laser based on monolayer graphene
Tipo
Artigo
Data de publicação
2024
Periódico
Journal of Lightwave Technology
Citações (Scopus)
0
Autores
S. S.C.
A. E.M.
Steinberg D.
Perez A.B.
Botia J.F.
Cardenas A.M.
Saito L.A.M.
de Souza E.T.
Zapata J.D.
A. E.M.
Steinberg D.
Perez A.B.
Botia J.F.
Cardenas A.M.
Saito L.A.M.
de Souza E.T.
Zapata J.D.
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Título de Volume
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Resumo
AuthorsThis work presents a stable and switchable dual-band generation from a polarization-dependent Erbium-doped fiber laser mode-locked by monolayer graphene as a saturable absorber. The ultrashort generated pulses at single band exhibit spectral (temporal) widths of 8.8 nm (305 fs) and 9 nm (384 fs) at 1536 nm and 1557 nm, respectively, while the simultaneous dual-band state ensured a spectral width of 5 and 6 nm for both wavelengths, which are the best dual-band mode-locked performances of the literature obtained from an EDFL. Also, its dual-band spectral evolution was analyzed by changing the pumping power and the intracavity polarization state via a motorized polarization controller. Finally, our simulation provided an excellent qualitative explanation of the laser switching as a function of pumping power due to the change in EDF gain. We found a relative percentage error between experimental results and simulation of <inline-formula><tex-math notation="LaTeX">$22.7\%$</tex-math></inline-formula>, <inline-formula><tex-math notation="LaTeX">$13.3\%$</tex-math></inline-formula>, <inline-formula><tex-math notation="LaTeX">$9\%$</tex-math></inline-formula>, and <inline-formula><tex-math notation="LaTeX">$8.3\%$</tex-math></inline-formula> for 1530 nm, 1556 nm, and dual-band left and right central wavelength, respectively.
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Assuntos Scopus
A-stable , Dual Band , Dual-band generation , Erbium-doped fiber lasers , Laser-based , Mode-locked , Monolayer graphene , Passively mode-locked , Pumping power , Switchable