1. A.T. Pedersen, L. Grüner-Nielsen, K. Rottwitt, Measurement and modeling of low wavelength losses of silica fibers and their impact at communication wavelengths. J. Lightwave Technol. 27, 1296–1300 (2009)
2. P.C. Becker, N.A. Olson, J.R. Simpson, Erbium-Doped Fiber Amplifiers, Fundamentals and Technology (Academic Press, San Diego, 1999)
3. E. Desurvire, Erbium Doped Fiber Amplifiers, Principles and Applications (Wiley, New York, 1994)
4. M.J.F. Digonet, Rare-Earth-Doped Fiber Lasers and Amplifiers, 2nd edn. (Marcel Dekker, New York, 1993)
5. C.R. Giles, E. Desurvire, Modeling erbium-doped fiber amplifiers. J. Lightwave Technol. 9, 271–283 (1991)