[1] Yang J. Research on key technologies of homomorphic encryption[D], 14-16(2019).

[2] Yue H H, Wang W G, Chen X L et al. Simulation and experimental demonstration of full duplex chaotic optical secure communication[J]. Acta Optica Sinica, 34, s206010(2014).

[3] Qin Y, Zhang S, Gong Q et al. Virtual optical image encryption based on interference[J]. Acta Optica Sinica, 32, 1007001(2012).

[4] Zhang W. Research on security of optical access networks and its improvement techniques[D], 59-69(2017).

[5] Li Q, Deng T, Wu Z M et al. Security-enhanced bidirectional long-distance chaos secure communication[J]. Chinese Journal of Lasers, 45, 0106001(2018).

[6] Zhou Y X, Bi M H, Teng X Y et al. Physical layer encryption and system performance enhancement algorithm based on chaos mapping in OFDM-PON[J]. Acta Optica Sinica, 41, 1606002(2021).

[7] Li Y K, Pu T, Zheng J L et al. Realization scheme of quantum noise randomized cypher based on parallel intensity modulation[J]. Chinese Journal of Lasers, 48, 1706002(2021).

[8] Fok M P, Wang Z X, Deng Y H et al. Optical layer security in fiber-optic networks[J]. IEEE Transactions on Information Forensics and Security, 6, 725-736(2011).

[9] Zhao W. Physical layer encryption methods and technologies basing on channel state information nonlinear transformation[D], 25-39(2019).

[10] Zhao J, Tang X F, Ding M et al. Optical encryption scheme based on spectrum aliasing using a pair of filter banks[C], C4F_3(2020).

[11] Ding M, Tang X F, Zhao J et al. Experimental demonstration of a 32 Gb/s reconfigurable logic gate using a dual-drive Mach-Zehnder modulator[C], 20195081(2020).

[12] Liu L, Tang X F, Jiang X et al. Physical layer encryption scheme based on cellular automata and DNA encoding by hyper-chaos in a CO-OFDM system[J]. Optics Express, 29, 18976-18987(2021).

[13] Shao W D, Fu Y D, Cheng M F et al. Chaos synchronization based on hybrid entropy sources and applications to secure communication[J]. IEEE Photonics Technology Letters, 33, 1038-1041(2021).

[14] Agarwal V, Chaurasia V. All optical SOA-MZI-based encryption decryption system using co propagating optical pulses and CW wave at 40 Gb/s[M]. Satapathy C S, Raju K S, Mandal J K, et al. Proceedings of the second international conference on computer and communication technologies, 381, 201-208(2015).

[15] Zhang L M, Hu W S, Yang X L. Gb/s secure key distribution based on synchronization of polarization states[C], Tu1l.3(2021).

[16] Yan J, Wang X K, Guo D B et al. Security analysis of post-processing in quantum Gaussian key distributed[J]. Acta Optica Sinica, 36, 0327003(2016).

[17] Hajomer A A E, Zhang L M, Yang X L et al. 284.8-Mb/s physical-layer cryptographic key generation and distribution in fiber networks[J]. Journal of Lightwave Technology, 39, 1595-1601(2021).