Generation of dual wavelength ultrashort pulse outputs from a passive mode locked fiber ring laser

Tunable dual-wavelength filter and its group delay dispersion in domain-engineered lithium niobate

“…[9][10][11] A variety of studies have reported on the realization of dual-wavelength lasers based on different materials, such as erbium-doped fibers, semiconductor optical amplifiers, and polarization maintaining fibers. [12][13][14] To obtain dual-wavelength or multiwavelength filters, two Peltier devices were used to control the sample's temperature at different positions independently. 15 Simulated annealing (SA) method were employed to realize multi-wavelength operation.…”

Tunable triple-wavelength mode-locked ytterbium fiber laser with birefringence filter

“…Compared to the actively mode-locked fiber lasers [8][9][10], passive mode-locking is technically easy to operate , is compact in structure as well as has low jitter in performance. Passively mode-locked multiwavelength (dual-or triple-wavelength) erbium-doped fiber lasers have been developed in recent years based on a semiconductor saturable absorber mirror (SESAM) and comb filter as well as polarization maintaining fiber [13][14][15], and even more prominent, up to 7-wavelength mode-locked erbium fiber laser has also been realized in 2011 by using the hybrid mode-locked components of the SESAM and inline birefringence fiber filter [16]. In addition, as an excellent candidate for the development of ultrafast laser Abstract A mode-locked ytterbium fiber laser based on all normal dispersion (ANDi) technique and nonlinear polarization rotation (NPR) is investigated with birefringent plate as a spectral filter in this paper.…”

“…However, manufacturing the mentioned modulation components in Ref. [13][14][15][16][17][18][19][20] is complicated and of high cost. Up to now, to our knowledge, no triple-wavelength mode-locked NPR-based ANDi ytterbium fiber laser with a single birefringent plate as spectral filter has been reported.…”

Spectrum research on the passive mode-locked $$\hbox {Yb}^{3+}$$ Yb 3 + -doped fiber laser

“…As it is self-starting, modulation mechanisms are not needed comparing with active starting, so the cost and complexity of the ultrashort pulse lasers reduce. Based on so many advantages, passive multi-wavelength mode locked fiber lasers have been widely studied by many people currently Tu et al (2007), Fenga et al (2006), Gong et al (2006), Yeh et al (2007). In order to generate multi-wavelength laser, all kinds of filters were used such as Mach-Zehnder filter Tu et al (2007) However, multi wavelength tunable passive mode locked Yb 3+ -doped fiber laser only by appropriately rotating the polarization controllers has not been reported to our best knowledge.…”