[1] P. Torres, L. C. G. Valente, M. C. R. Carvalho. Security system for optical communication signals with fiber Bragg gratings[J]. IEEE Trans. Microwave Theory Technol., 2002, 50(1): 13～16

[2] Thomas H. Shake. Security performance of optical CDMA against eavesdropping[J]. J.Lett. Technol., 2005, 23(2): 655～670

[3] Pu Tao, Wang Rong, Li Yuquan. Non-Gaussian approximation method for phase encoding optical code division multi-access system[J]. Acta Optica Sinica, 2007, 27(1): 10～14

[4] Zhu Yingxun, Wang Rong, Ding Xiaoguang et al.. Performance analysis of temporal phase optical code-division multiple access system[J]. Acta Optica Sinica, 2008, 28(10): 1874～1881

[5] K. Kitayama, X. Wang, N. Wada. Coherent techniques for optical code division multiple-access systems[C]. OSA Optical Amplifiers and Their Applications and Coherent Optical Technologies and Applications (OAAC/OTA),2006, No. CFD3

[6] Xu Xianling, Cui Nan. The informat ion hiding technology and application[J]. Information Security, 2007, (3): 27～30

[7] Wu Weilei. Research on the scheme of OCDMA-based covert communication[D] Nanjing: PLA University of Science and Technology, 2007. 24～31

[8] Xu Wang, Naoya Wada, Tetdusuya Miyazaki et al.. Asynchronous multiuser coherent OCDMA system with code-shift-keying and balanced detection[J]. IEEE JSTQE, 2007, 13: 1463～1470

[9] Yitang Dai, Xiangfei Chen, Shizhong Xie et al.. Equivalent phase shift in a fiber Bragg grating achieved by changing the sampling period[J]. IEEE Photon. Technol. Lett., 2004, 16(10):2284～2286

[10] Bernard, B. Wu Evgenii, E. et al.. A method for secure communications over a public fiber-optical network[J]. Opt. Exp., 2006, 14(9): 3738～3751

[11] Chen Peng, Wang Rong, Pu Tao et al.. Double band en/decoder based on super structured fiber Bragg gratings[J]. Chinese J. Lasers, 2009, 36(5):1124～1128: