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    • 3. 发明申请
    • Method for polarization-based intrusion monitoring in fiberoptic links
    • 光纤链路中基于偏振的入侵监测方法
    • US20060072922A1
    • 2006-04-06
    • US11244665
    • 2005-10-06
    • Gregory MacDonaldJames Sluss
    • Gregory MacDonaldJames Sluss
    • H04B10/00
    • H04B10/85
    • A fiber optic communication system including a fiber optic link, a transmitter system and a receiver system. The transmitter system includes a laser source producing a light beam, and a polarization controller receiving the light beam and providing an expected pattern of changing states of polarization to the light beam to output light signals into the fiber optic link to cause the expected pattern of changing states of polarization to be transmitted along the fiber optic link. The receiver system is provided with a polarization analyzer, and a light detector. The light detector receives the light signals transmitted by the transmitter, and forwards data indicative of the light signals to the polarization analyzer. The polarization analyzer analyzing the data with an inverse polarization reference frame and generates an alert based on deviations of the data from the expected pattern of changing states of polarization.
    • 包括光纤链路,发射机系统和接收机系统的光纤通信系统。 发射机系统包括产生光束的激光源和接收光束的偏振控制器,并且向光束提供改变极化状态的预期模式,以将光信号输出到光纤链路中,以引起预期的变化模式 沿着光纤链路传输的偏振状态。 接收机系统设有偏振分析仪和光检测器。 光检测器接收由发射机发送的光信号,并将指示光信号的数据转发到偏振分析器。 偏振分析仪用反偏振参考帧分析数据,并根据数据与偏振状态的预期模式的偏差产生警报。