1.1 本指南涵盖了决定光辐射传输光纤波导动态性能的关键参数（参见 注1 ). 在本指南中，光辐射是波长约为200的电磁辐射 nm至约5000 nm（相应地，频率为50 000厘米 −1. 至2000厘米 −1. ，光子能量为6 eV至0.25 eV）。 注1: 辐射传输光纤波导的典型名称包括光波导、光纤、光纤波导和光纤辐射波导。 1.2 以国际单位制表示的数值应视为标准值。 本标准不包括其他计量单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 光纤波导的许多特性都会影响其动态性能。需要知道某些关键参数（特征）的定量值， 先验的 ，以预测或评估特定使用条件下波导的动态性能。本指南确定了这些关键参数，并提供了有关其重要性及其如何影响性能的信息。然而，本指南并未描述如何获得所需的定量信息。光纤波导制造商可以使用本指南为关心动态性能的用户描述其产品的特性。 光纤波导的用户可以使用本指南来确定其波导是否适合其预期应用。

1.1 This guide covers the key parameters that determine the dynamic performance of an optical radiation transmitting fiber waveguide (see Note 1 ). For the purpose of this guide, optical radiation is electromagnetic radiation of wavelengths from about 200 nm to about 5000 nm (correspondingly, frequencies of 50 000 cm −1 to 2000 cm −1 , and photon energies of 6 eV to 0.25 eV). Note 1: Typical designations of radiation transmitting fiber waveguides include optical waveguide, fiber-optic, fiber-optic waveguide, and fiber-optic radiation guide. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 Many characteristics of a fiber-optic waveguide affect the dynamic performance. Quantitative values of certain key parameters (characteristics) need to be known, a priori , in order to predict or evaluate the dynamic performance of a waveguide for specific conditions of use. This guide identifies these key parameters and provides information on their significance and how they affect performance. However, this guide does not describe how the needed quantitative information is to be obtained. Manufacturers of fiber-optic waveguides can use this guide for characterizing their products suitably for users who are concerned with dynamic performance. Users of fiber-optic waveguides can use this guide to determine that their waveguides are adequately characterized for their intended application.