2 W bismuth doped fiber lasers in the wavelength range 1300-1500 nm and variation of Bi-doped fiber parameters with core composition

2 W bismuth doped fiber lasers in the wavelength range 1300 – 1500 nm and variation of Bi-doped fiber parameters with core composition, Firstov, S V, Bufetov, I A, Khopin, V F, Shubin, A V, Smirnov, A M, Iskhakova, L D, Vechkanov, N N, Guryanov, A N, Dianov, E M