We present first dual-wavelength all-fiber laser, based on isolator-free theta cavity with two fiber Bragg mirrors and thulium- and holmium-doped fibers. Laser provides 350mW total power with 8% slope efficiency, and linewidth less than 01.mm.
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Title
Dual-Emission Band All-Fiber Laser based on Theta Cavity with Thulium- and Holmium-Doped Fibers