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    • 3. 发明专利
    • Sagnac interferometer based secure communication system
    • 基于SAGNAC干扰计的安全通信系统
    • JP2003051784A
    • 2003-02-21
    • JP2002152956
    • 2002-05-27
    • Mcdonnell Douglas Corpマクダネル ダグラス コーポレイション
    • UDD ERIC
    • H04B10/00H04B10/02H04B10/08H04B10/12H04B10/28
    • H04B10/85G01M11/39
    • PROBLEM TO BE SOLVED: To provide an economical security data communication system capable of employing an existing optical fiber cable for high-speed data transfer without using encryption.
      SOLUTION: The communication system includes a Sagnac interferometer for generating an interference output, a Sagnac loop 56, a light source 36 that generates light beams propagated in the directions opposite to each other in the Sagnac loop 56, a phase modulator 58 that provides information to the light beams propagating in the direction opposite to each other in the Sagnac loop 56 apart from the light source 36 to produce the information as an interferometer output, and an optical output detector 76 that is connected to the Sagnac loop to receive the interference output and generate an output signal denoting the information.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:提供一种经济的安全数据通信系统,其能够采用现有的光纤电缆进行高速数据传输而不使用加密。 解决方案:通信系统包括用于产生干扰输出的Sagnac干涉仪,Sagnac回路56,产生在Sagnac回路56中彼此相反方向传播的光束的光源36,相位调制器58,其向 光束在Sagnac环56中相对于光源36相反的方向传播,以产生干涉仪输出的信息,以及光输出检测器76,连接到Sagnac回路以接收干扰输出;以及 生成表示信息的输出信号。