[1] [1] Zhou Tianhong, Jiang Shan, Ren Hailan et al.. Research development of tunable lasers for optical communication systems［J］. Optoelectronic Technology & Information, 2004, 17(5): 1～5

[2] [2] Wu Chengbin, Gu Yuan, Wang Jiaying et al.. Technology and usage of tunable laser in DWDM systems［J］. Technology of Optical Communication, 2003, 27(6): 29～32

[3] [3] E. D. Black. An introduction to pound-drever-hall laser frequency stabilization［J］. Am. J. Phys., 2001, 69(1): 79～87

[4] [4] Wang Lixia, Jiang Yanyi, Bi Zhiyi et al.. Laser frequency stabilization based on control of intermode beat note［J］. Chinese J. Lasers, 2007, 34(9): 1198～1202

[5] [5] Gan Xiaocui, Liu Lianfu. Measurement of stabilization of frequency［J］. Information Technology, 2008, (6): 121～124

[6] [6] Cao Xiangke, He Yao, Zhang Rongzhu. Experiment on beat frequency between two independent different types of laser［J］. Chinese J. Lasers, 2009, 36(2): 284～289

[7] [7] Liang Jing, Long Xingwu. Stability analysis of beat frequency in double-longitudinal-mode He-Ne laser［J］. Acta Optica Sinica, 2009, 29(5): 1301～1304

[8] [8] A. Debut, S. Randoux, I. J. Zermmour. Line-width narrowing in Brillouin lasers: Theoretical analysis［J］. Phys. Rev. A, 2000, 62(2): 023803

[9] [9] Yuan Dandan, Hu Shuling, Liu Honghai et al.. Research of laser frequency stabilization［J］. Laser & Optoelectronics Progress, 2011, 48(8): 081401

[10] [10] Zhang Bin, Long Xingwu, Liu Jianping et al.. Lamb-dip frequency-stabilized He-Ne laser with an integrated cavity made of zerodur(I): structure and techniques［J］. Acta Optica Sinica, 2011, 31(8): 0814005

[11] [11] Yin Cong, Qian Jin, Zhang Xiaoping et al.. Frequency stabilization by polarization spectroscopy based on Cr hollow cathode discharge［J］. Chinese J. Lasers, 2011, 38(10): 1015001

[12] [12] R. K. Shelton, L. S. Ma, H. C. Kapteyn et al.. Phase-coherent optical pulse synthesis from separate femtosecond lasers［J］. Science, 2001, 293(5533): 1286～1289

[13] [13] L. S. Ma, Z. Y. Bi, A. Bartels et al.. Optical frequency synthesis and comparison with uncertainty at the 10-19 level［J］. Science, 2004, 303(5665): 1843～1845

[14] [14] Zhang Hui, Jin Yuwen, Li Yan. Time domain characterize of frequency stability-Allan variance［J］. Metrology Test Technology, 2001, (s1): 192～193

[15] [15] Peng Qizhong, Zhang Youzheng. Characterization of frequency stability: the confidence of estimated Allan variance［J］. Acta Electronica Sinica, 1983, 11(3): 1～8

[16] [16] Thomas Bttger. Laser Frequency Stabilization to Spectral Hole Buring Frequency References in Erbium-Soped Crystals Material and Device Optimization［D］. Bozeman: Montana State University, 2002