[1] Yang Xianglin.Fiber amplifier and its application.Beijing, Electronic Industry Publishing Company, 2000(in Chinese)

[2] Xue Zixing, Lu Guowei, Lin Rujian.Optimal design of gain-flattened EDFA in C band.Semiconductor Optoelectronics, 2002,23(1):29～32(in Chinese)

[3] Xiao Yanhong, Li Qun, Han Yan.et al.An iterative algorithm for transmission function designing of gain flattening filters.Chinese Journal of Lasers, 2001, A28(3):265～268(in Chinese)

[4] Liaw S L,Ho K P,Chi S.Dynamic power-equalized EDFA module based on strain tunable fiber Bragg gratings.IEEE Photon Technol Lett, 1999,11(7):797～799

[5] Pandit M K,Chiang K S,Chen Z H,et al.Tunable long-period fiber grating for EDFA gain and ASE Equalization.Microwave and Opt Technol Lett,1999,25(3):181～184

[6] Meng Hongyun, Zhao Chunliu, Yang Shiquan,et al.Gain-flattening of an erbium-doped fiber amplifier using a fiber loop mirror.Chinese Journal of Lasers, 2002, A29(9):805～807(in Chinese)

[7] Giles C R,Desurvire E.Modeling erbium-doped fiber amplifiers.Journal Lightwave Technology, 1991,9(2):271～283