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    • 2. 发明申请
    • TUNABLE COHERENT OPTICAL TIME DIVISION REFLECTOMETRY
    • 可控光学时间分辨反射光谱
    • WO2011057528A1
    • 2011-05-19
    • PCT/CN2010/077909
    • 2010-10-20
    • HUAWEI TECHNOLOGIES CO., LTD.EFFENBERGER, J.Frank
    • EFFENBERGER, J.Frank
    • H04B10/08
    • G01M11/3136G01M11/3127
    • An apparatus comprising an optical transmitter, a coarse tuner coupled to the optical transmitter and having a first tuning range, a fine tuner coupled to the optical transmitter and having a second tuning range smaller than and within the first tuning range, a wavelength division demultiplexer coupled to the optical transmitter and to a plurality of optical fibers, and a detector coupled to the optical transmitter and the wavelength division demultiplexer. A network component comprising at least one processor configured to implement a method comprising detecting an Optical Time Domain Reflectometry (OTDR) signal spectrum that has a modulated pattern, and detecting a reflected OTDR signal spectrum that has a shifted modulated pattern comprising a frequency shift with respect to the OTDR signal spectrum and a time shift proportional to the frequency shift.
    • 一种装置,包括光发射机,粗调谐器,耦合到光发射机并具有第一调谐范围,耦合到光发射机的微调谐器,并具有小于第一调谐范围的第二调谐范围,波分多路分离器耦合 到光发射机和多个光纤,以及耦合到光发射机和波分多路分解器的检测器。 一种网络组件,包括至少一个处理器,其被配置为实现一种方法,包括检测具有调制模式的光时域反射计(OTDR)信号频谱,以及检测具有移位调制图案的反射OTDR信号频谱,所述移位调制图案包括相对于 到OTDR信号频谱和与频移成比例的时移。