[1] [1] G. P. Agrawal. Fiber-Optic Communication Systems[M]. third edition, New York: John Wiley & Sons Inc.,2002

[2] [2] J. P. Laude. DWDM Fundamentals,Components,and Applications[M]. Boston: Artech House Optoelectronics Library,2002

[5] [5] J. J. Pan,T. Zhu. 1×N fiber coupler employing diffractive optical element[J]. Electron. Lett., 1999, 35(4): 324～325

[6] [6] Xin Zhao,Changhe Zhou,Liren Liu. Dynamic optical coupling technique based on complementary Dammann gratings[C]. Proc. SPIE,2002,4788(28): 231～238

[7] [7] Caihui Di,Changhe Zhou. Dynamic optical coupled system employing even-numbered Dammann gratings[J]. Appl. Opt., 2006, 45(9): 1993～2000

[8] [8] H. Dammann,E. Klotz. Coherent optical generation and inspection of two-dimensional periodic structures[J]. Opt. Acta, 1977, 24(4): 505～515

[10] [10] Changhe Zhou,Jia Jia,Liren Liu. Circular Dammann grating[J]. Opt. Lett.,2003,28(22): 2174～2176

[11] [11] Changhe Zhou,Liren Liu. Numerical study of Dammann array illuminators[J]. Appl. Opt.,1995,34(26): 5961～5969

[12] [12] Jacques Duparré,Bernt Gtz,Rolf Gring. Micro-optical 1×4 fiber switch for multimode fibers with 600-μm core diameters[J]. Appl. Opt., 2003, 42(34): 6889～6896