[1] [1] Galeener F L. Band limits of vibrational spectra of tetrahedral glass. Phys. Rev. (B), 1979, 19(8):4292～4296

[3] [3] Davey S T. Optical gain spectrum of GeO2-SiO2 Raman fiber amplifiers. IEE Proc., 1989, 136:301～307

[4] [4] Neuhauser R E, Krummrich P M, Bock H et al.. Impact of nonlinear pump interactions on broadband distributed Raman amplification. OFC ′2001. MA-4

[5] [5] Kidorf H et al.. Pump interaction in a 100-nm bandwidth Raman amplifier. IEEE Photonics Technol. Lett., 1999, 11(5):530～532