IEC 60793-1-47:2017 RLV包含国际标准及其红线版本。红线版本只有英文版本。Redline版本为您提供了一种快速简单的方法来比较该标准与其前一版本之间的所有变化。红线版本不是IEC官方标准，只有标准的当前版本才被视为官方文件。 IEC 60793-1-47:2017为测量1 550 nm或1 625 nm的单模光纤（B类）、850 nm或1 300 nm的A1类多模光纤以及650 nm、850 nm或1 300 nm的A3类和A4类多模光纤的宏观弯曲损耗制定了统一要求，从而有助于检查用于商业目的的光纤和电缆。本文给出了两种测量宏观弯曲灵敏度的方法:-方法A-光纤缠绕，涉及B类单模光纤和A1类多模光纤。 -方法B-四分之一圆弯曲，属于A3和A4类多模光纤。 对于这两种方法，宏观弯曲损耗可以利用一般光纤衰减技术测量，例如功率监测技术（见附录A）或切割？背部技术（见附录B）。如果将方法A和B应用于相同的纤维，则预期会产生不同的结果。这是因为两种方法之间的关键区别在于展开，包括弯曲半径和弯曲光纤的长度。差异的原因是，与单模光纤相比，A3和A4多模光纤预计将以较短的长度部署，每单位光纤长度的弯曲次数较少。模式和A1类多模光纤。在本文中，“曲率半径”被定义为纤维可以在其上弯曲的合适的圆形支撑件(例如，平坦表面上的心轴或引导槽)的半径。此外，还增加了信息性附录E，以近似B类单模光纤在宽波长范围内各种有效弯曲处的弯曲损耗。第四版取消并取代了2009年出版的第三版。它构成技术修订。与上一版相比，此版本包括以下重大技术变更: -原附件A已重新编号为附件D； -引入关于发射功率监测技术的新附件A； -介绍关于削减技术的附件B； -介绍关于A1多模测量的光源特性要求的附录C；-介绍关于平行板（2点）宏观弯曲损失近似的附录E。 关键词:单模光纤宏观弯曲损耗

IEC 60793-1-47:2017 RLV contains the International Standard and its Redline version. The Redline version is available in English only. The Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. The Redline version is not an official IEC Standard, only the current version of the standard is to be considered the official document.


IEC 60793-1-47:2017 establishes uniform requirements for measuring the macrobending loss of single-mode fibres (class B) at 1 550 nm or 1 625 nm, category A1 multimode fibres at 850 nm or 1 300 nm, and category A3 and A4 multimode fibres at 650 nm, 850 nm or 1 300 nm, thereby assisting in the inspection of fibres and cables for commercial purposes. This document gives two methods for measuring macrobending sensitivity:
- Method A – Fibre winding, pertains to class B single-mode fibres and category A1 multimode fibres.
- Method B – Quarter circle bends, pertains to category A3 and A4 multimode fibres.
For both of these methods, the macrobending loss can be measured utilizing general fibre attenuation techniques, for example the power monitoring technique (see Annex A) or the cut？back technique (see Annex B). Methods A and B are expected to produce different results if they are applied to the same fibre. This is because the key difference between the two methods is the deployment, including the bend radius and length of fibre that is bent. The reason for the difference is that A3 and A4 multimode fibres are expected to be deployed in short lengths with a smaller number of bends per unit fiber length compared to single-mode and category A1 multimode fibres. In this document, the "curvature radius" is defined as the radius of the suitable circular shaped support (e.g. mandrel or guiding groove on a flat surface) on which the fibre can be bent. In addition, informative Annex E has been added to approximate bend loss for class B single-mode fibres across a broad wavelength range at various effective bends. This fourth edition cancels and replaces the third edition published in 2009. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- former Annex A has been renumbered to Annex D;
- introduction of new Annex A on the transmitted power monitoring technique;
- introduction of Annex B on the cut-back technique;
- introduction of Annex C on the requirements for the optical source characteristics of A1 multimode measurement;
- introduction of Annex E on parallel plate (2-point) macrobend loss approximation.

Keywords: macrobending loss of single-mode fibers