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GB/T 15972.42-2021 English PDF

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GB/T 15972.42-2021: Specifications for optical fibre test methods - Part 42: Measurement methods and test procedures for transmission characteristics - Chromatic dispersion
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GB/T 15972.42: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 15972.42-2021English409 Add to Cart 4 days [Need to translate] Specifications for optical fibre test methods - Part 42: Measurement methods and test procedures for transmission characteristics - Chromatic dispersion Valid GB/T 15972.42-2021
GB/T 15972.42-2008English919 Add to Cart 4 days [Need to translate] Specifications for optical fibre test methods -- Part 42: Measurement methods and test procedures for transmission and optical characteristics -- Chromatic dispersion Obsolete GB/T 15972.42-2008

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Standard similar to GB/T 15972.42-2021

YD/T 2554.1   GB/T 9771.1   GB/T 20186.1   GB/T 15972.40   GB/T 15972.33   GB/T 15972.41   

Basic data

Standard ID GB/T 15972.42-2021 (GB/T15972.42-2021)
Description (Translated English) Specifications for optical fibre test methods - Part 42: Measurement methods and test procedures for transmission characteristics - Chromatic dispersion
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard M33
Word Count Estimation 22,279
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 15972.42-2021: Specifications for optical fibre test methods - Part 42: Measurement methods and test procedures for transmission characteristics - Chromatic dispersion


---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.
Specifications for optical fibre test methods - Part 42.Measurement methods and test procedures for transmission characteristics - Chromatic dispersion ICS 33.180.10 M33 National Standards of People's Republic of China Replace GB/T 15972.42-2008 Optical fiber test method specification part 42. Transmission characteristics measurement methods and test procedures Wavelength dispersion (IEC 60793-1-42.2013,Opticalfibres-Part 1-42.Measurement Released on 2021-04-30 Implemented on 2021-08-01 State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Method overview 1 4 Test device 2 5 Samples and sample preparation 3 6 Procedure 3 7 Calculation 3 8 Results 4 Appendix A (Normative Appendix) Method A---Specific requirements for phase-shift measurement 5 Appendix B (Normative Appendix) Method B---Specific requirements for time-domain group delay spectrum measurement 9 Appendix C (Normative Appendix) Method C---Specific requirements for differential phase shift measurement 12 Appendix D (Normative Appendix) Dispersion Fitting 16

Foreword

GB/T 15972 "Specifications for Optical Fiber Test Methods" consists of several parts, and its expected structure and corresponding international standards are. ---Part 10.General principles of measurement methods and test procedures (corresponding to IEC 60793-1-1); ---Part 20~Part 29.Measurement methods and test procedures of dimensional parameters (corresponding to IEC 60793-1-20 to IEC 60793- 1-29); ---Part 30~Part 39.Measurement methods and test procedures of mechanical properties (corresponding to IEC 60793-1-30 to IEC 60793- 1-39); ---Part 40~Part 49.Measurement methods and test procedures of transmission characteristics (corresponding to IEC 60793-1-40 to IEC 60793- 1-49); ---Part 50~Part 59.Environmental performance measurement methods and test procedures (corresponding to IEC 60793-1-50 to IEC 60793- 1-59). Among them, GB/T 15972.40~49 consists of the following parts. ---Part 40.Measurement methods and test procedures for transmission characteristics attenuation; ---Part 41.Measurement methods of transmission characteristics and test procedure bandwidth; ---Part 42.Measurement methods and test procedures for transmission characteristics. Wavelength dispersion; ---Part 43.Measurement methods of transmission characteristics and test procedures numerical aperture; ---Part 44.Measurement methods of transmission characteristics and test procedures cut-off wavelength; ---Part 45.Measurement methods and test procedures for transmission characteristics; Mode field diameter; ---Part 46.Measurement methods of transmission characteristics and test procedures for light transmittance changes; ---Part 47.Measurement methods and test procedures for transmission characteristics, macrobending loss; ---Part 48.Measurement methods and test procedures for transmission characteristics Polarization mode dispersion; ---Part 49.Differential modulus delay for measurement methods and test procedures of transmission characteristics. This part is part 42 of GB/T 15972. This section was drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 15972.42-2008 "Specification for optical fiber test methods Part 42.Measurement of transmission characteristics and optical characteristics Methods and test methods wavelength dispersion. Compared with GB/T 15972.42-2008, the main technical changes in this part are as follows. ---Modified the name of the standard; ---Modified the applicable fiber types and corresponding methods, test devices and calculations of this part (see Chapter 1, Chapter 3, Chapter 4 and Chapter 4). Chapter 7, Chapter 1, Chapter 3, Chapter 4 and Chapter 7 of the.2008 edition); ---Deleted method D---interference method (see 3.4 and Appendix D of the.2008 edition); ---Modified the FWHM requirements of filtered light-emitting diodes (see C.1, C.1 of the.2008 edition); --- Added dispersion fitting (see Appendix D). This part uses the redrafting method to modify and adopt IEC 60793-1-42.2013 "Optical Fiber Part 1-42.Measurement Methods and Tests" Procedural Wavelength Dispersion. Compared with international standards, the main structural changes of this part are as follows. ---According to the layout format and presentation requirements of my country's standards, part of the content of Chapter 1 in the IEC document is adjusted to Chapter 3 of this part; Merged Chapter 4 of the IEC file into Chapter 3 of this part; combined the symbols and symbols in the fitting formula in Chapter 7 of the IEC file The meaning of the number is adjusted to Appendix D of this section. Compared with IEC 60793-1-42.2013, the main technical differences and the reasons for this part are. ---Regarding normative reference documents, this section has made adjustments with technical differences to adapt to my country's technical conditions and adjustments It is concentratedly reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows. ● IEC 60793-2 is deleted, and GB/T 9771 (all parts) and GB/T 12357.1 are added accordingly; ● Replace IEC 60793-1-1 with GB/T 15972.10 which is modified to adopt international standards; ● Replace IEC 60793-1-41.2001 with GB/T 15972.41-2008 modified to adopt international standards. ---In order to be consistent with the classification code of the optical fiber in the national standard, the scope of the IEC document "B1 single-mode fiber" is changed to "B1.1, B1.2 and B1.3 category single-mode fiber"; considering the practical application of B6.b2 and B6.b3 sub-category bending-insensitive single-mode fiber The same method is used for testing, so the scope of the IEC document "B6.a1 and B6.a2 sub-type single-mode fiber" is expanded to "B6 single-mode fiber" Mode fiber". This section has made the following editorial changes. --- Modify the standard name to "Specification for Optical Fiber Test Methods Part 42.Measurement Methods and Test Procedures for Transmission Characteristics Wavelength Dispersion; ---Corrected the wrong direction of A.1.3 Note 1; ---Corrected the quotation errors in chapters A.3.2 and B.3.2. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This part was proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This part is under the jurisdiction of the National Communication Standardization Technical Committee (SAC/TC485). Drafting unit of this section. Fiberhome Technology Group Co., Ltd. The main drafters of this section. Liu Cheng, Wang Dongxiang, Hu Guyue, Hu Peng, Xu Jiangbo. The previous releases of the standards replaced by this part are. ---GB/T 15972.42-2008. Optical fiber test method specification part 42. Transmission characteristics measurement methods and test procedures Wavelength dispersion

1 Scope

This part of GB/T 15972 specifies the test method of optical fiber wavelength dispersion, and establishes the test equipment, sample and sample preparation, process Uniform requirements for sequence, calculation and results. This section applies to the following categories of optical fibers and cables specified in the GB/T 12357 and GB/T 9771 series of standards. ---A1 type multimode fiber; ---A4f, A4g and A4h sub-class multimode fiber; ---B1.1, B1.2, B1.3, B2, B4, B5 and B6 category single-mode fiber.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 9771 (all parts) Single-mode optical fiber for communication GB/T 12357 (all parts) Multimode optical fiber for communication GB/T 15972.10 Optical fiber test method specification Part 10.General rules of measurement methods and test procedures (GB/T 15972.10- 2021, IEC 60793-1-1.2017, MOD) GB/T 15972.41-2008 Optical fiber test method specification Part 41.Transmission characteristic and optical characteristic measurement method and test Program bandwidth (IEC 60793-1-41.2001, MOD)

3 Method overview

3.1 General There are three test methods for measuring wavelength dispersion. ---Method A. Phase shift method; ---Method B. Time-domain group delay spectrum method; ---Method C. Differential phase shift method. The above three measurement methods are all suitable for A1 type graded refractive index distribution multimode fiber, A4f, A4g and A4h sub-type multimode fiber Dispersion measurement of Class B single-mode fiber in the specified wavelength range. The above method is suitable for the dispersion measurement in laboratories, factories and optical fiber cable work sites, and the measurement wavelength range can be changed as required. The requirements for the measurement environment of the above methods should meet the requirements in GB/T 15972.10.These methods are suitable for the length of 1km or more The measurement of optical fiber or optical cable can also measure the shorter optical fiber when the measurement accuracy or repeatability meets the requirements. 3.2 Method A---Phase Shift Method The phase shift method is suitable for measuring the B1.1, B1.2, B1.3, B2, B4, B5 and B6 single-modes in the B-type single-mode fiber in the specified wavelength range

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