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Dual-wavelength operation of a figure-eight fiber laser¹
Baldemar Ibarra Escamilla
EVGENY KUZIN
Acceso Abierto
Atribución-NoComercial-SinDerivadas
Optical filter
Fiber laser
We study numerically an erbium-doped figur-eight fiber laser including a doublé-bandpass optical filter for dual-wavelength pulse generation. Simulations are performed for several values of the filter band-width and wavelength separation between the transmission windows. The results show that dual-wavelength mode-locking is obtained in most cases, with a balanced energy distribution between wavelengths. Due to cavity dispersion, the pulses at each wavelength are asynchronous for a large wavelength separation, whereas they are synchronous for closely spaced wavelengths, as in this case cross-phase modulation is able to compensate for the dispersión-induced walkoff. In the asynchronous case, dual-wavelength operation is favored by the filter loss, whereas in the synchronous case it is favored by the saturable absorber action of the nonlinear optical loop mirror. Simulations also show that, thanks to those stabilization mechanisms, dual-wave-length pulsed operation does not require precise cavity loss equalization between the two oscillating wave-lengths.
Laser Physics
2012
Artículo
Inglés
Estudiantes
Investigadores
Público en general
Pottiez, O., et al., (2012), Dual-wavelength operation of a figure-eight fiber laser¹, Laser Physics, Vol. 22(10): 1565–1572.
ÓPTICA
Versión aceptada
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