[1] [1] Wysocki P F, Digonnet M J F, Kim B Y, et al. Characteristics of erbium-doped superfluorescent fibr sources for interferometric sensor applications [J]. J. Lightwave Technol., 1994, 12(3): 550-567.

[2] [2] Hall D C, Burns W K. Wavelength stability optimization in Er3+-doped superfluorescent fibre sources [J]. Electr.Lett., 1994, 30(8): 653-654.

[3] [3] Patrick H J, Kersey A D, Burns W K, et al. Erbium-doped superfluorescent fibre source with long period fibre grating wavelength stabilization [J]. Electr. Lett., 1997, 33: 2061-2063.

[4] [4] Lee Ju Hah, Ryu Uh-chan, Park Namkyoo. Passive erbium-doped fiber seed photon generator for high-power Er3+-doped fiber superfluorescent sources with an 80 nm bandwidth [J]. Opt. Lett., 1999, 24(4): 279-281.

[5] [5] Huang W C, Wai P K A, et al. One-stage erbium ASE source with 80nm bandwidth and low ripples [J]. Electr.Lett., 2002, 38(17): 956-957.

[6] [6] Wang L A, Chen C D. Stable and broadband Er-doped superfluorescent fibre sources using double-pass backward configuration [J]. Electr. Lett., 1996, 32(19): 1815-1816.

[7] [7] Yang Bao, Ming Hai, Guo Yang, et al. Flatterning spectrum of a broadband and wavelength stable erbium doped superfluorescent fiber source [J]. Chin. Phys. Lett., 1999, 16(5): 356-357.