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GB/T 15972.43-2021 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 15972.43-2021 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$299.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 15972.43-2021: Specifications for optical fibre test methods - Part 43: Measurement methods and test procedures for transmission characteristics - Numerical aperture
Status: Valid

GB/T 15972.43: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15972.43-2021	299	Add to Cart	3 days	Specifications for optical fibre test methods - Part 43: Measurement methods and test procedures for transmission characteristics - Numerical aperture	Valid
GB/T 15972.43-2008	399	Add to Cart	3 days	Specifications for optical fibre test methods -- Part 43: Measurement methods and test procedures for transmission and optical characteristics -- Numerical aperture	Obsolete

Similar standards

YD/T 2554.1 GB/T 9771.1 GB/T 20186.1 GB/T 15972.40 GB/T 15972.41 GB/T 15972.42

Basic data

Standard ID: GB/T 15972.43-2021 (GB/T15972.43-2021)
Description (Translated English): Specifications for optical fibre test methods - Part 43: Measurement methods and test procedures for transmission characteristics - Numerical aperture
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M33
Word Count Estimation: 16,173
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 15972.43-2021: Specifications for optical fibre test methods - Part 43: Measurement methods and test procedures for transmission characteristics - Numerical aperture

---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 43.Measurement methods and test procedures for transmission characteristics-Numerical aperture ICS 33.180.10 M33 National Standards of People's Republic of China Replace GB/T 15972.43-2008 Optical fiber test method specification. Part 43.Transmission characteristics Measurement method and test procedure Numerical aperture (IEC 60793-1-43.2015, Opticalfibres-Part 1-43.Measurement 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 Symbols and abbreviations 1 4 Method overview 1 5 Device 2 6 Sample preparation 7 7 Procedure 7 8 Calculation 7 9 Results 9 Appendix A (informative appendix) Default values of parameters required for NA measurement 10 Appendix B (informative appendix) The mapping relationship between the numerical apertures measured by different specimen lengths 11 Reference 12

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.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 43 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 15972.43-2008 "Specification for optical fiber test methods Part 43.Measurement of transmission characteristics and optical characteristics Methods and Test Methods Numerical Aperture." Compared with GB/T 15972.43-2008, the main technical changes in this part are as follows. ---Modified the name of the standard; ---Added the technical requirements for A3 and A4 multimode fibers (see Chapter 1, 5.2.5, Appendix B); ---Added abbreviations and symbols (see Chapter 3); --- Deleted the formula for calculating the theoretical numerical aperture using the relative refractive index difference (see Chapter 3 of the.2008 edition); --- Deleted the far-field light intensity distribution method test device (see Figure 1 of the.2008 edition); ---Modified the requirements of the central wavelength of the light source (see 5.1.2, 4.2.2 of the.2008 edition); ---The effective size of the detector or the diameter of the pinhole in Method 1 is added (see 5.2.2.2); the straightness of the reproduction lens L2 is deleted Diameter requirements (see 4.3.3.2 in the.2008 edition); delete the requirements for light detectors (see 4.3.4 in the.2008 edition); add method 3 Requirements for optical detectors (see 5.2.4.7); Method 3 is added to calculate the far-field intensity (see 8.4); ---Added method 4 inverse far-field method (see 5.2.5); added method 4 to calculate numerical aperture (NAff) (see 8.5); ---Modified the requirements of the sample length, and revised the typical sample length of 2m±0.2m to the requirements in the product specification (see 6.1, 5.1 of the.2008 edition); ---The requirement of threshold percentage KNA is modified, and the threshold of 5% is modified to KNA. For details, please refer to the requirements in the product specification (see 8.2,.2008 Chapter 3 of the Year Edition); ---Added a typical legend for far-field numerical aperture testing (see Figure 6); ---Added the default values of the required parameters in the numerical aperture measurement (see Appendix A); ---Added the mapping relationship of the numerical aperture measured by different sample lengths (see Appendix B). This part uses the redrafting method to modify and adopt IEC 60793-1-43.2015 "Optical Fiber Part 1-43.Measurement Methods and Test Procedures" Ordinal Numerical Aperture Measurement. 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 Part 3 of this part Chapter; merge the "Chapter 4 Benchmark Test Method" in the IEC document into the "Chapter 4 Method Overview" of this part; merge the IEC document Amend Appendix A of this section to Appendix B of this section, and accordingly, modify Appendix B in the IEC file to Appendix A of this section. The main technical differences between this part and IEC 60793-1-43.2015 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. ● Replace IEC 60793-2-10 with GB/T 12357.1; ● Replace IEC 60793-2-20 with GB/T 12357.2; ● Replace IEC 60793-2-30 with GB/T 12357.3; ● Replace IEC 60793-2-40 with GB/T 12357.4; ● Replace IEC 60793-1-1 with GB/T 15972.10. ● In the normative reference documents, because the IEC 60793-1-21 and IEC 60793-1-22 are not mentioned in the IEC standard text, it is corrected IEC cited errors and deleted IEC 60793-1-21 and IEC 60793-1-22; ---Added abbreviations chapter; ---Corrected the incorrect reference of the formula for indirectly obtaining the far-field numerical aperture; ---Because the parameter requirements required for numerical aperture measurement in Appendix B of the IEC document are only for reference, the specific values are in the relevant product specifications Therefore, the appendix was revised from a normative appendix to an informative appendix, and the length of the numerical aperture sample in the appendix was corrected. Claim. This section has made the following editorial changes; --- Modify the standard name to "Specification for Optical Fiber Test Methods Part 43.Measurement Methods and Test Procedure Values for Transmission Characteristics Aperture". 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, Xu Jiangbo, Yu Huang. The previous releases of the standards replaced by this part are as follows. ---GB/T 15972.43-2008. Optical fiber test method specification. Part 43.Transmission characteristics Measurement method and test procedure Numerical aperture

1 Scope

This part of GB/T 15972 specifies the test method of optical fiber numerical aperture, and establishes the test equipment, sample preparation, procedure, calculation And the unified requirements of the results. This section applies to A1, A2, A3, and A4 multimode optical fibers and cables.

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 12357.1 Multimode Optical Fiber for Communication Part 1.Characteristics of Type A1 Multimode Optical Fiber (GB/T 12357.1-2015, IEC 60793-2-10.2011, MOD) GB/T 12357.2 Multimode Optical Fiber for Communication Part 2.Characteristics of Type A2 Multimode Optical Fiber (GB/T 12357.2-2004, IEC 60793-2-20,.2002, MOD) GB/T 12357.3 Multimode Optical Fiber for Communication Part 3.Characteristics of Type A3 Multimode Optical Fiber (GB/T 12357.3-2004, IEC 60793-2-30.2002, MOD) GB/T 12357.4 Multimode Optical Fiber for Communication Part 4.Characteristics of Type A4 Multimode Optical Fiber (GB/T 12357.4-2016, IEC 60793-2-40.2009, MOD) 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)

3 Symbols and abbreviations

The following abbreviations and symbols apply to this document. KNA threshold percentage (Thresholdpercentage) NA Numerical Aperture (Numericalaperture) NAff far-field numerical aperture (Far-fieldnumericalaperture) NAth Maximum theoretical numerical aperture (Maximumtheoreticalnumericalaperture) RTM benchmark test method (Referencetestmethod)

4 Method overview

NA is an important parameter of A1, A2, A3, and A4 multimode fibers. It indicates the ability of the fiber to collect optical power. It is used Predict the injection efficiency, splicing loss and microbending and macrobending performance of the optical fiber. The numerical aperture can be defined by measuring the far-field distribution. In some cases, NAth is also used. NAth can be determined by the fiber core and cladding. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 15972.43-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 15972.43-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 15972.43-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 15972.43-2021_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 15972.43-2021?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15972.43-2021 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.