BS EN 60793-1-43:2015规定了测量数值的统一要求 光纤的孔径，从而有助于检查光纤和电缆的 商业目的。A1、A2、A3和A4类多模光纤的数值孔径（NA）是一个重要参数 描述光纤集光能力的参数。它被用来预测发射 效率、接头处的接头损耗和微/宏观弯曲性能。数值孔径是通过测量远场模式（NAff）来定义的。在某些情况下 文献中使用了理论数值孔径（NAth），可通过以下公式确定: 测量纤芯和包层之间折射率的差异。 理想情况下，这些 两种方法应该产生相同的值。交叉引用:IEC 60793-1-1IEC 60793-1-21IEC 60793-1-22IEC 60793-2-10IEC 60793-2-20IEC 60793-2-30IEC 60793-2-40EN 60793-1-1EN 60793-1-21EN 60793-1-22EN 60793-2-10EN 60793-2-20EN 60793-2-30EN 60793-2-40购买本文件时可提供的所有当前修订。

BS EN 60793-1-43:2015 establishes uniform requirements for measuring the numerical aperture of optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes.The numerical aperture (NA) of categories A1, A2, A3 and A4 multimode fibre is an important parameter that describes a fibre's light-gathering ability. It is used to predict launching efficiency, joint loss at splices, and micro/macrobending performance.The numerical aperture is defined by measuring the far-field pattern (NAff). In some cases the theoretical numerical aperture (NAth) is used in the literature, which can be determined from measuring the difference in refractive indexes between the core and cladding. Ideally these two methods should produce the same value.Cross References:IEC 60793-1-1IEC 60793-1-21IEC 60793-1-22IEC 60793-2-10IEC 60793-2-20IEC 60793-2-30IEC 60793-2-40EN 60793-1-1EN 60793-1-21EN 60793-1-22EN 60793-2-10EN 60793-2-20EN 60793-2-30EN 60793-2-40All current amendments available at time of purchase are included with the purchase of this document.