IEC TR 62614-2:20 15（E）是一份技术报告，旨在显示用于表征多模式发射条件的环绕通量的背景。这包括环绕通量的选择和环绕通量要求的定义，以及渐变折射率多模光纤产品上所有多模衰减和回波损耗测量方法的隐含变化。第一版取消并取代了2012年发布的IEC TR 61282-11。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: -大幅减少不确定性条款； -除了关键规范性参考文献的更新之外，还进行了技术编辑； -结合了与850nm和1300nm之间的波长偏置以及10千兆以太网VCSEL的环绕通量极限相关的附加图。本出版物包含一个名为“TR 62614-2补充数据”的附件，采用Excel电子表格形式。本文件旨在作为补充，不构成本技术报告的组成部分。 关键词:环绕通量,多模发射条件

IEC TR 62614-2:2015(E) which is a Technical Report, is intended to show the background of encircled flux for the characterization of multimode launch conditions. This includes the selection of the encircled flux and the definition of the encircled flux requirements in conjunction with the implied variation for all multimode attenuation and return loss measurement methods on graded index multimode fibre products. This first edition cancels and replaces IEC TR 61282-11 published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- significant reduction to the clause on uncertainties;
- technical edits throughout in addition to updates to key normative references;
- incorporation of additional figures related to the wavelength bias between 850 nm and 1 300 nm as well as the encircled flux limit of 10 Gigabit Ethernet VCSELs. This publication contains an attached file titled, "TR 62614-2 Supplemental Data", in the form of an Excel spreadsheet. This file is intended to be used as a complement and does not form an integral part of this Technical Report. Keywords: encircled flux, multimode launch conditions