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介绍了用Sagnac干涉法和固定分析法对光纤偏振模色散的测量原理和测试实验系统。与固定分析仪测量法对比 ,Sagnac干涉法的实验装置更趋简单 ,测量光谱更具有可读性。在目前偏振模色散测量仪器价格昂贵的情况下 ,此方法具有很高的实用价值
The measurement principle and test system of polarization mode dispersion of optical fiber with Sagnac interferometry and fixed analysis are introduced. In contrast to fixed analyzer measurements, the Sagnac interferometry experimental setup is simpler and the measurement spectrum is more readable. In the current situation of polarization mode dispersion measuring instrument is expensive, this method has a very high practical value