[1] Shinji Yamashita, Masato Nishihara. L-band erbium doped fiber amplifier incorporating an inline fiber grating laser [J]. IEEE J. Sel. Top. Quantum Electron., 2001, 7(1):44~48
[2] Juhan Lee, Uh-Chan Ryu, Seong Joon Ahn et al.. Enhancement of power conversion efficiency for an L-band EDFA with a secondary pumping effect in the unpumped EDF section [J]. IEEE Photon. Technol. Lett., 1999, 11(1):42~44
[3] Bo-Hun Choi, Hyo-Hoon Park, Moonjung Chu et al.. High-gain coefficient long-wavelength-band erbium-doped amplifier using 1530-nm band pump [J]. IEEE Photon. Technol. Lett., 2001, 13(2):109~111
[5] C. Randy GiLes, Emmanuel Desurvire. Modeling erbium-doped fiber amplifiers [J]. J. Lightwave Technol., 1991, 9(2):271~283
[6] Yang Xianglin. Optical Amplifier and Its Application [M]. Beijing: Publishing House of Electronic Industry, 2000 (in Chinese)