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提出了基于光纤弯曲的光信号窃取方法,即“剥光缆,弯光纤,取信号,解信息”。通过推导光纤弯曲泄漏公式和考察两类光信号窃取影响因素,得出实施光信号隐蔽窃取所需的最佳光纤弯曲半径。在此理论指导下,设计了光信号窃取系统框架结构,并搭建了光信号窃取实验系统。理论和实验证明:光缆光信号窃取方法具有可行性,且隐蔽性好、不易被检测和发现。
The optical signal stealing method based on fiber bending is proposed, that is, “stripping cable, bending optical fiber, taking signal, solution information”. By deriving the fiber bending leakage formula and investigating the influencing factors of the two types of optical signal stealing, the optimum bending radius of the optical fiber required for optical signal stealth stealing is obtained. Under the guidance of this theory, the frame structure of the optical signal stealing system is designed and an optical signal stealing experiment system is set up. Theoretical and experimental results show that optical fiber optical signal stealing method is feasible and concealment is not easy to be detected and found.