Author/Authors :
A.S.L.، Gomes, نويسنده , , M.T.، Carvalho, نويسنده , , M.L.، Sundheimer, نويسنده , , C.J.A.، Bastos-Filho, نويسنده , , J.F.، Martins-Filho, نويسنده , , M.B.، Costa e Silva, نويسنده , , J.P.، von der Weid, نويسنده , , W.، Margulis, نويسنده ,
Abstract :
We report on the characterization of a recently introduced dual-wavelength pumping scheme for thulium-doped fiber amplifiers using 800 and 1050 nm. Using a counterpropagating pump configuration, 180 mW of total pump power yielded 27-dB small-signal gain and less than 5-dB noise figure. Furthermore, using optical frequency domain reflectometry, the distributed gain in this configuration was evaluated, allowing for optimization of the doped fiber length.
Keywords :
Friction stir welding , Fatigue , Flaws , Eurocode 9 , Aluminium
