[1] A. Melloni, M. Martinelli. Synthesis of direct coupled-resonators bandpass filters for WDM systems[J]. J. Lightwave Technol., 2002, 20(2): 296～303

[2] Kong Guangming, E Shulin, Deng Wenyuan et al.. Study on polymer double-ring resonant filter［J］. Chinese J. Lasers, 2009, 36(1): 134～138

[3] Yang Jianyi, Jiang Xiaoqing, Wang Minghua et al.. Characteristics and limitations of optical filters employing single-ring microring resonators［J］. Journal of Optoelectronics·Laser, 2003, 14(1): 12～16

[4] Yang Jianyi, Jiang Xiaoqing, Wang Minghua. Filtering characteristics of series-coupled double-ring optical microring resonators［J ］. Acta Optica Sinica, 2003, 23(10): 1191～1195

[5] Dong Xiaowei, Pei Li, Jian Shuisheng. Transfer matrix method for analyzing the characteristics of multiple-ring higher order microring resonators［J］. Chinese J. Lasers, 2005, 32(7): 929～932

[6] Yan Xin, Ma Chunsheng, Xu Yuanzhe et al.. Theoretical analysis of M×N microring resonator array on silicon［J］. Journal of Semiconductor, 2005, 26(11): 2223～2229

[7] S. J. Mason. Feedback theory: further properties of signal flow graphs［J］. Proceedings of the IRE, 1956, 44(7): 920～926

[8] Li Weibin. Signal Flow Graph Theory and Its Applications in the Analysis of Optical Ring Resonator［D］. Wuhan: Huazhong University of Science and Technology, 2009. 13～19

[9] C. K. Madsen, J. H. Zhao. Optical Filter Design and Analysis: A Signal Processing Approach［M］. New York: Wiley, 1999. 95～146

[10] Zhang Bin, Mao Luhong, Xie Sheng et al.. A new spice model of silicon-based microring resonator and application for optical filter［J］. Acta Optica Sinica, 2010, 30(2): 537～541

[11] Wang Yuhai, Ma Chunsheng, Yan Xin et al.. Analysis on amplifying characteristic of Er3+/Yb3+ co-doped microring resonators［J］. Acta Optica Sinica, 2009, 29(3): 632～637

[12] Ma Chunsheng, Liu Shiyong. Theory of Optical Waveguide Mode［M］. Changchun: Jilin University Press, 2006. 352～355