Figure 1
From: Numerical model of hybrid mode-locked Tm-doped all-fibre laser
Scheme of the thulium-doped fibre ring laser with hybrid mode-locking, WDM: wavelength-division multiplexer, PC: polarisation controller, \({\text {Tm}}^{3+}\): thulium-doped fibre, Hi–Ge: fibre with high concentration of germainum oxide, SWCNT: single wall carbon nanotubes.
