[1] [1] Lei Xu, Ivan Glesk, Darren Rand et al.. Suppression of beating noise of narrow linewidth erbium-doped fiber ring lasers by use of a semiconductor optical amplifier[J]. Opt. Lett., 2003, 28(10): 780～782

[2] [2] G.de Geronimo, S.Taccheo, P.Laporta. Optoelectronic feedback control for intensity noise suppression in a codoped erbium-ytterbium glass laser [J]. Electron. Lett., 1997, 33(15): 1336～1337

[3] [3] Sun Wenfeng, Zhao Changming, Wei Guanghui. LD pump fiber amplifier with high power and single frequency[J] . Opt. Technique, 2005, 31(6): 827～830

[4] [4] Xia Guijin, Zhang Jumei, He Haiguang. Study on the upper state population distribution of double cladding erbium-ytterbium co-doped fiber amplifiers[J]. Acta Photonica Sinica, 2004, 33(6): 654～657

[5] [5] Wu Bo, Liu Yongzhi, Li Shuang et al.. 1550 nm high efficient narrow linewith fiber laser[J]. J. Optoelectronics·Laser, 2007, 18(7): 770～772

[6] [6] H.Okamura, K.Iwatsuki. Spectral linewidth broadening in Er-doped-fiber amplifiers measure with less than 1.4 kHz linewidth light source[J]. Electron. Lett., 1990, 26(23): 1965～1967

[7] [7] D.Simeonidou, S.Hamidi, A.S.Siddiqui. Spectral linewidth broadening in erbium-doped and Raman fibre amplifier[J]. Electron. Lett., 1992, 28(18): 1765～1766

[8] [8] G.J.Cowle, P. R. Morkel, R. I. Laming et al.. Spectral broadening due to fiber amplifier phase noise[J]. Electron. Lett., 1990, 26(7): 424～425

[9] [9] Hame Ludvigsen, Mika Tossavainen, Matti Kaivola. Laser linewidth measurements using self-homodyne detection with shot delay[J]. Opt. Commun., 1998, 155: 180～186

[10] [10] Jay W. Dawson, Namkyoo Park, Kerry J.Vahala. An improved delayed self-heterodyne interferometer for line width measurements[J]. IEEE Photon. Technol. Lett., 1992, 4(9): 1063～1066