[1] [1] Michel Digonnet,H. J. Shaw. Wavelength multiplexing in single-mode fiber couplers [J]. Appl. Opt.,1983,22(3):484-491

[2] [2] Yoshinori Namihira,Toshio Kawazawa,Hiroharu Wakabayashi. Incident polarization angle and temperature dependence of polarization and spectral response characteristics in optical fiber couplers [J]. Appl. Opt.,1991,30(9):1062-1069

[3] [3] Li Qiliang,Xie Yuyong,Zhu Yinfang et al.. Numerical study of soliton switching in two-core nonlinear fiber coupler with high order coupling dispersion coefficient [J]. Chinese J. Lasers,2008,35(10):1516-1521

[4] [4] Shuai Cijun,Cai Guohua,Miao Jianyu. Structure of optical fiber coupler with the infrared spectrometer [J]. Infrared and Laser Engineering,2005,34(5):553-555

[5] [5] Shuai Cijun,Duan Ji’an,Cai Guohua. Research on morphology and microstructure in the taper region of fused fiber devices [J]. Acta Optica Sinica,2006,26(1):121-125

[6] [6] Kin Seng Chiang. Development of long-period fiber grating coupling devices [J]. Appl. Opt.,2009,48(25):F61-F67

[7] [7] Dong Xiaowei,Xu Ou,Lu Shaohua et al.. Design and experiment of add/drop filter based on double-fiber-Bragg-gratings coupler [J]. Chinese J. Lasers,2007,34(8):1106-1109

[8] [8] Dong Xiaowei,Pei Li,Jian Shuisheng. Narrow bandwidth add-drop channel filter based on fiber-Bragg-grating-coupler [J]. Chinese J. Lasers,2006,33(5):621-625

[9] [9] Huang Weiping. Coupled-mode theory for optical waveguides:an overview [J]. J. Opt. Soc. Am. A,1994,11(3):963-983

[10] [10] Govind P. Agrawal. Nonlinear Fiber Optics & Applications of Nonlinear Fiber Optics [M]. Third Edition. Jia Dongfang,Yu Zhenhong,Tan Bin et al. Transl.. Beijing:Publishing House of Electronics Industry,2002

[11] [11] Wu Chongqing. Optical Waveguide Theory [M]. Beijing:Tsinghua University Press,2005. 139-153

[12] [12] Yanming Huo,Peter K. Cheo,George G. King. Fundamental mode operation of a 19-core phase-locked Yb-doped fiber amplifier [J]. Opt. Express,2004,25(12):6230-6239

[13] [13] Turan Erdogan. Fiber grating spectra [J]. J. Lightwave Technol.,1997,15(8):1277-1294