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GB/T 15972.45-2021 English PDF

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Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15972.45-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$449.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 15972.45-2021: Specifications for optical fibre test methods - Part 45: Measurement methods and test procedures for transmission characteristics - Mode field diameter
Status: Valid

GB/T 15972.45: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15972.45-2021	449	Add to Cart	5 days	Specifications for optical fibre test methods - Part 45: Measurement methods and test procedures for transmission characteristics - Mode field diameter	Valid
GB/T 15972.45-2008	919	Add to Cart	4 days	Specifications for optical fibre test methods -- Part 45: Measurement methods and test procedures for transmission and optical characteristics -- Mode field diameter	Obsolete

Similar standards

YD/T 2554.1 GB/T 9771.1 GB/T 20186.1 GB/T 15972.40 GB/T 15972.42 GB/T 15972.43

Basic data

Standard ID: GB/T 15972.45-2021 (GB/T15972.45-2021)
Description (Translated English): Specifications for optical fibre test methods - Part 45: Measurement methods and test procedures for transmission characteristics - Mode field diameter
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M33
Word Count Estimation: 24,259
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 15972.45-2021: Specifications for optical fibre test methods - Part 45: Measurement methods and test procedures for transmission characteristics - Mode field diameter

---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 45.Measurement methods and test procedures for transmission characteristics-Mode field diameter ICS 33.180.10 M33 National Standards of People's Republic of China Replace GB/T 15972.45-2008 Optical fiber test method specification Part 45. Transmission characteristics measurement methods and test procedures Mode field diameter (IEC 60793-1-45.2017,Opticalfibres-Part 1-45. Released on 2021-04-30 and implemented on 2021-11-01 State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Overview of test methods 1 4 Test device 2 5 Samples and sample preparation 3 6 Test procedure 3 7 Calculation 3 8 Results 5 Appendix A (informative appendix) Structure changes of this part compared with IEC 60793-1-45.2017 6 Appendix B (Normative Appendix) Method A---Specific requirements for measuring mode field diameter by direct far-field method 7 Appendix C (Normative Appendix) Method B---Specific requirements for measuring mode field diameter by the far-field variable aperture method 9 Appendix D (Normative Appendix) Method C---Specific requirements for measuring mode field diameter by the near-field scanning method 12 Appendix E (Normative Appendix) Method D---Specific requirements for measuring mode field diameter with optical time domain reflectometer 15 Appendix F (informative appendix) Sampling data and calculation results 19

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~Part 19.General principles of measurement methods and test procedures (corresponding to IEC 60793-1-10 to IEC 60793-1- 19); ---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.Transmission characteristics measurement methods and test procedures 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 45 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 15972.45-2008 "Specification for optical fiber test methods Part 45.Measurement of transmission characteristics and optical characteristics Methods and Test Procedures Mode Field Diameter". Compared with GB/T 15972.45-2008, the main technical changes in this part are as follows. ---Modified the name of the standard; ---Added an overview of the test device (see 4.1); ---Added the sample requirements for B6 fiber in the high-order mode stripper (see 4.6); ---The sample requirements for B6 fiber in the sample length have been added (see 5.1); ---Modified the sample length requirements of B1.1 to B6 types of fibers (see 5.1, 5.1 in the.2008 edition); ---Added the structural changes in this part of Appendix A compared with IEC 60793-1-45.2017 (see Appendix A); ---The computer chapter in Appendix B has been added (see B.1.3); ---Added the sampling data chapters in Appendix B, C and D (see B.4, C.4 and D.4); ---Added the requirements for measuring B6 type optical fiber in Appendix C (see C.1.2.2); ---Deleted the device requirements for B3 type optical fiber (see B.1.2.2 of the.2008 edition), ---Added the device requirements for B5 type optical fiber (see C.1.2.3); ---Added formula (E.1) (see E.4); ---Modified the formula (E.2) (see E.4, D.4 of the.2008 edition); ---Revised the data in Table F.1, Table F.2 and Table F.3 (see Appendix F, Table E.1, Table E.2 and Table E.3 of the.2008 edition). This part uses the redrafting method to modify and adopt IEC 60793-1-45.2017 ``Optical Fiber Part 45.Measurement Methods and Test Procedures Diameter of the mode field". Compared with IEC 60793-1-45.2017, this part has many structural adjustments. Appendix A lists this part and IEC 60793- 1-45.2017 chapter number comparison list. The technical differences between this part and IEC 60793-1-45.2017 and the reasons are as follows. ---Regarding normative reference documents, this section has made adjustments with technical differences to adapt to my country's technical conditions and adjustments. The situation is collectively reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows. ● Deleted IEC 60793-2 (see Chapter 2 of the IEC document); ● Replace IEC 60793-1-40.2001 (see Chapter 2) with GB/T 15972.40-2008 modified to adopt international standards; --- Deleted the content of Chapter 3 "Terms and Definitions" and Chapter 5 Benchmark Test Methods of the IEC document, because the "Terms and Definitions" in the IEC document "Definition" has no actual content, and the benchmark test method is incorporated into Chapter 3 "Test Method Overview" of this part (see IEC document Chapter 3 and Chapter 5); --- Due to the consideration of the influence of connection loss changes on the measurement, the requirements for optical fiber connectors in Appendix E (see E.2.6) have been added; --- The verification test section of Appendix E has been revised, and the specific calculation formula for the equivalent level has been added (see E.4.3). This section has made the following editorial changes. --- Amend the name to "Specifications for Optical Fiber Test Methods Part 45.Measurement Methods and Test Procedures for Transmission Characteristics, Mode Field Direct) path". Please note that some of the content in this section may involve patents. The issuing agency of this section 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 organizations of this section. Fiberhome Technology Group Co., Ltd., Chengdu Terui Communication Equipment Testing Co., Ltd. The main drafters of this section. Liu Cheng, Yao Di, Gan Lu, Wang Dongxiang, Li Linying, Wang Yanliang, Xie Xiaozhen, Wang Heng. The previous releases of the standards replaced by this part are. ---GB/T 15972.45-2008. Optical fiber test method specification Part 45. Transmission characteristics measurement methods and test procedures Mode field diameter

1 Scope

This part of GB/T 15972 specifies the test method for the optical fiber mode field diameter, and establishes the test equipment, injection conditions, procedures, calculations Uniform requirements for methods and results. This section applies to the measurement of the mode field diameter of Class B single-mode optical fibers.

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 15972.40-2008 Optical fiber test method specification Part 40.Transmission characteristics and optical characteristics measurement methods and tests Program attenuation (IEC 60793-1-40.2001, MOD)

3 Overview of test methods

The mode field diameter (MFD) measurement is the cross-sectional range of the electromagnetic field intensity of the guided mode in the fiber cross-section, and the mode field diameter (MFD) is defined as The integral ratio of the far-field intensity distribution is Petermann's second definition (PetermannⅡ). The mode field diameter (MFD) can be used in the far field with the far-field light intensity distribution PF (θ), the complementary aperture power transfer function α (θ) and the near-field light The strong distribution f2(r) is measured. The mathematical equivalence between different test methods is shown in Figure 1. Figure 1 Mathematical transformation relationship between the three test methods of mode field diameter There are four test methods for measuring the mode field diameter of a single-mode fiber. ---Method A. Direct far-field scanning method; ---Method B. Far-field variable aperture method; ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 15972.45-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 15972.45-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 15972.45-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 15972.45-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 15972.45-2021?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15972.45-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.