GB/T 33779.1-2017 English PDF

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GB/T 33779.1-2017: Guidance for special characteristics of optical fibre -- Part 1: Attenuation uniformity
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Basic data

Standard ID: GB/T 33779.1-2017 (GB/T33779.1-2017)
Description (Translated English): Guidance for special characteristics of optical fibre -- Part 1: Attenuation uniformity
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M33
Classification of International Standard: 33.180.10
Word Count Estimation: 8,841
Date of Issue: 2017-05-31
Date of Implementation: 2017-12-01
Quoted Standard: GB/T 15972.40; GB/T 33779.2
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the terms and definitions of fiber attenuation uniformity testing, abbreviations, devices, samples and sample preparation, procedures, calculations and results requirements. This standard is suitable for non-segmentation, large length of fiber attenuation attenuation uniformity measurement.

GB/T 33779.1-2017: Guidance for special characteristics of optical fibre -- Part 1: Attenuation uniformity

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Guidance for special characteristics of optical fiber - Part 1. Attenuation uniformity ICS 33.180.10 M33 National Standards of People's Republic of China Guidelines for the testing of optical fiber properties Part 1. attenuation uniformity Part 1. Attenuationuniformity 2017-05-31 released 2017-12-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface III 1 Scope 1 2 normative reference document 1 3 Terms and definitions 1 4 acronym 1 5 device 2 6 sample and sample preparation 2 7 Procedure 2 8 Calculate 3 9 results 4

Foreword

GB/T 33779 "Fiber Optic Properties Test Guide" is expected to be divided into the following sections. - Part 1. attenuation uniformity; Part 2. OTDR backscatter curve analysis; Part 3. Effective area (Aeff). This part is part 1 of GB/T 33779. This part is drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. The issuer of this document does not assume responsibility for the identification of these patents. This part is part of the Ministry of Industry and Information Technology (communications) of the People's Republic of China. This part of the drafting unit. Wuhan Fiberhome Technology Group Co., Ltd., Jinling DSM Resin Co., Ltd., Chengdu Corning Cable Co., Ltd., Changfei Fiber Optic Cable Co., Ltd., Beijing University of Posts and Telecommunications, Jiangsu Hengtong Optical Fiber Technology Co., Ltd., Hubei Kai Le Technology Co., Ltd. This part of the main drafters. Liu Cheng, Li Jing, Yu Qin, Li Chunsheng, Wang Xiaoquan, Zhao Jiandong, Yang Shixin, Chen Wei, Zhang Yongjun, Wang Dongxiang. Guidelines for the testing of optical fiber properties Part 1. attenuation uniformity

1 Scope

This part of GB/T 33779 specifies the terms and definitions of fiber attenuation uniformity testing, abbreviations, devices, samples and sample preparation, Procedures, calculations and results. This part is suitable for non-segmentation, large length of fiber attenuation attenuation uniformity measurement.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 15972.40 Specifications for optical fiber test methods - Part 40. Measurement methods and test procedures for transmission characteristics and optical properties Order --- attenuation GB/T 33779.2 Guidelines for the testing of optical fiber properties - Part 2. Analysis of OTDR backscatter curves

3 terms and definitions

GB/T 15972.40 The definitions and the following terms and definitions apply to this document. 3.1 Attenuation uniformity Characterize the attenuation coefficient along the fiber or cable length variation characteristics. The attenuation uniformity characteristics can sometimes be used to attenuate nonuniformity (at- tenuationnon-uniformity. 3.2 Optical time domain reflectometer (OTDR) curve opticaltimedomainreflectometer (OTDR) trace The curve of the backward scattered light power varies with the length of the fiber, or the curve obtained from the data derived from the curve. 3.3 Bi-directional backscattertechnology A combination of backscattering measurements at both ends of the fiber. In the fiber at both ends of a backscattering test, the two scattering curve can be combined To obtain an accurate attenuation of any segment in the fiber or cable.

4 abbreviations

The following abbreviations apply to this document. SW Sliding Window (SlidingWindow) GSW generalized sliding window (GeneralizedSlidingWindow) OTDR Optical Time Domain Reflectometer (OpticalTimeDomainReflectometer) ......

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