Optical steganography of code-shift-keying OCDMA signal based on incoherent light source
Optical steganography of code-shift-keying OCDMA signal based on incoherent light source
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DOI：
10.1109/jphot.2015.2432072
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发表时间：
2015-05
影响因子：
2.4
通讯作者：
Huatao Zhu;Rong Wang;T. Pu;Tao Fang;P. Xiang;Jiling Zheng;Weijiang Wu
中科院分区：
文献类型：
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作者：
Huatao Zhu;Rong Wang;T. Pu;Tao Fang;P. Xiang;Jiling Zheng;Weijiang Wu
提出了一种增强光隐形通道安全性的方法。所提出的方法使用基于偏振调制器的码移键控（CSK）数据调制和光码分多址（OCDMA）编码/解码技术，其中需要非相干光源。我们的分析和实验结果表明，使用波长选择开关进行光编码/解码的CSK-OCDMA信号已经在40公里波分复用光纤链路上秘密传输。此外，隐形信道仅对公共信道造成小于0.48dB的功率损失，而这两个信道都可以实现无差错传输（误码率小于10-9）。
A method to enhance the security of the optical stealth channel is proposed. The proposed method uses the techniques of polarization modulator based code-shift-keying (CSK) data modulation and optical code-division multiple-access (OCDMA) en/decoding, where an incoherent light source is needed. Our analysis and experimental results show that the CSK-OCDMA signal, where a wavelength selective switch is used for optical en/decoding, has been stealthily transmitted over a 40-km wavelength-division multiplexing optical fiber link. In addition, the stealth channel only causes a power penalty less than 0.48 dB to the public channel, whereas both of these two channels can achieve error-free transmission (with bit error rate less than 10-9.