Heterodyne optical spectrum analyzer
    2.
    发明申请
    Heterodyne optical spectrum analyzer 有权
    异频光谱分析仪

    公开(公告)号:US20060033927A1

    公开(公告)日:2006-02-16

    申请号:US10520818

    申请日:2003-07-08

    IPC分类号: G01B9/02

    CPC分类号: G01J9/02 G01J9/04

    摘要: A heterodyne optical signal analyzer (HOSA) permits accurate reconstruction of an optical input signal (Es) in the time domain. In one embodiment, a vector representation of the light is used to account for two polarization states of the optical signal. The components of a heterodyne optical signal analyzer (10), including optical couplers (12), all have errors and offsets. For example, optical power detectors (16) are very sensitive to changes in polarization of the optical signal (Es) and of the reference signal (Er). Several HOSA calibration procedures including detector calibration, vector calibration, and reference signal calibration are described.

    摘要翻译: 外差光信号分析仪(HOSA)可以准确地重构时域中的光输入信号(Es)。 在一个实施例中,光的矢量表示用于考虑光信号的两个偏振状态。 包括光耦合器(12)的外差光信号分析器(10)的组件都具有错误和偏移。 例如,光功率检测器(16)对光信号(Es)和参考信号(Er)的偏振变化非常敏感。 描述了包括检测器校准,矢量校准和参考信号校准在内的几个HOSA校准程序。

    Identifying optical fiber segments and determining characteristics of an optical device under test based on fiber segment scatter pattern data
    3.
    发明申请
    Identifying optical fiber segments and determining characteristics of an optical device under test based on fiber segment scatter pattern data 有权
    基于光纤段散点图数据识别光纤段并确定被测光学器件的特性

    公开(公告)号:US20050219512A1

    公开(公告)日:2005-10-06

    申请号:US11062740

    申请日:2005-02-23

    IPC分类号: G01M11/00 G01N21/00

    CPC分类号: G01M11/3172

    摘要: Complex data is obtained from OFDR backscatter measurements for an optical device under test (DUT). That complex scatter pattern data may be used along with a previously-determined fiber segment pattern to identify the fiber segment within the DUT, even when the DUT is an optical network DUT that includes multiple fibers coupled to perform one or more functions. In other non-limiting example applications, the OFDR scatter pattern data can be used to identify where in the DUT a loss occurred and where in the DUT a temperature change occurred.

    摘要翻译: 复合数据从被测光学器件(DUT)的OFDR后向散射测量获得。 即使当DUT是包括耦合以执行一个或多个功能的多个光纤的光网络DUT时,该复杂散射图案数据也可以与先前确定的光纤段图案一起使用以识别DUT内的光纤段。 在其他非限制性示例应用中,可以使用OFDR散射图数据来识别在DUT中发生损耗的位置以及在DUT中发生温度变化的位置。