关键词: 相干检测, 光纤泄漏, 光频域反射检测, 密集波分复用

Abstract: fiber communication becomes more and more important, this paper first analyzes fiber information leakage detection methods, including point to point the lowspeed communication and high speed DWDM communication coherent detection method. Based on the corresponding detection principle, we get actual test results and analysis, which reveal that the information leakage risks. According to the optical information leakage risks, protection method of optical fiber information based on optical frequency domain reflectometry is introduced.

Key words: coherent detection, optical leakage, OFDR, DWDM