纤维光学互连器件和无源元件 基本试验和测量程序 第3-40部分:检查和测量 带偏振保持尾纤连接器消光比

[中文适用范围]： IEC 61300 的这一部分描述了测量光纤连接器在 PM 光纤连接中保持给定消光比的能力的程序。在本次测试中，我们将测量限制在最常见的情况下，即在 pm 光纤中传播的近线偏振光。这里使用的术语“消光比”是指在光纤的两个正交偏振轴上传播的光的比例，并且更恰当地定义为“偏振串扰”。 “消光比”是常用术语。该程序设计用于制造环境中的专用设备，因此包含相当复杂的测试配置。应该注意的是，在配备适当的光学实验室中可以使用其他更直接的测试配置。这些可能是未来额外测试程序的主题。需要注意的是，该测试程序并不是为长期连续测试而设计的；偏振对准的漂移尤其可能发生在单模光纤中。因此，对组件进行长期测试需要重复而不是连续测量。 [外文原描述]： IEC 61300-3-40:1998 describes the procedure to measure the ability of an optical fibre connector to maintain a given extinction ratio across the connection in pm fibre. In this test we limit the measurement to the most common case of nearly linearly polarized light propagating in pm fibre. The term "extinction ratio" used here refers to the proportion of light propagating in the two orthogonal polarization axes of the fibre and is more properly defined as "polarization crosstalk". "Extinction ratio" is the commonly used term. This procedure has been designed for use with dedicated equipment in a manufacturing environment and thus incorporates a rather elaborate test configuration. It should be noted that other more direct test configurations can be used in suitably equipped optical laboratories. These may be the subject of additional test procedures in the future. It should be noted that this test procedure is not designed for long term continuous testing; drift of polarization alignment can occur particularly in the single-mode fibre. Hence, repeated rather than continuous measurement is required for long term testing of components.