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GB/T 9771.1-2020: Single-mode optical fibres for telecommunication - Part 1: Characteristics of a dispersion unshifted single-mode optical fibre
Status: Valid GB/T 9771.1: Evolution and historical versions
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| GB/T 9771.1-2020 | English | 259 |
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Single-mode optical fibres for telecommunication - Part 1: Characteristics of a dispersion unshifted single-mode optical fibre
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GB/T 9771.1-2020
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| GB/T 9771.1-2008 | English | 150 |
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Single-mode optical fibres for telecommunication -- Part 1: Characteristics of a dispersion unshifted single-mode optical fibre
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GB/T 9771.1-2008
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| GB/T 9771.1-2000 | English | 199 |
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Communication with a single-mode fiber Series Part 1: characteristics of non-dispersion shifted single-mode fiber
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GB/T 9771.1-2000
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| GB/T 9771-1988 | English | RFQ |
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The series of single mode optical fibres for telecommunication
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GB/T 9771-1988
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Basic data | Standard ID | GB/T 9771.1-2020 (GB/T9771.1-2020) | | Description (Translated English) | Single-mode optical fibres for telecommunication - Part 1: Characteristics of a dispersion unshifted single-mode optical fibre | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | M33 | | Classification of International Standard | 33.180.10 | | Word Count Estimation | 14,126 | | Date of Issue | 2020-06-02 | | Date of Implementation | 2020-12-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 9771.1-2020: Single-mode optical fibres for telecommunication - Part 1: Characteristics of a dispersion unshifted single-mode optical fibre
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Single-mode optical fibres for telecommunication - Part 1.Characteristics of a dispersion unshifted single-mode optical fibre
ICS 33.180.10
M33
National Standards of People's Republic of China
Replace GB/T 9771.1-2008
Single-mode fiber for communication
Part 1.Non-dispersion shifted single-mode fiber characteristics
2020-06-02 released
2020-12-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Abbreviations 1
5 Rounding rules 2
6 Requirements 2
6.1 Dimension parameters 2
6.2 Transmission characteristics 3
6.3 Mechanical properties 5
6.4 Environmental performance 7
Appendix A (informative appendix) Correspondence between GB/T 9771 and IEC standards and ITU-T standards for single-mode fiber codes 9
Reference 10
Foreword
GB/T 9771 "Single Mode Optical Fiber for Communication" is divided into the following parts.
---Part 1.Non-dispersion shifted single-mode fiber characteristics;
---Part 2.Cutoff wavelength shifted single-mode fiber characteristics;
---Part 3.Non-dispersion shifted single-mode fiber characteristics with extended wavelength range;
---Part 4.Dispersion-shifted single-mode fiber characteristics;
---Part 5.Non-zero dispersion-shifted single-mode fiber characteristics;
---Part 6.Characteristics of non-zero-dispersion single-mode fiber for wide-wavelength optical transmission;
---Part 7.Characteristics of bending loss-insensitive single-mode fiber for access network.
This part is Part 1 of GB/T 9771.
This section was drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 9771.1-2008 "Single-mode optical fiber for communications-Part 1.Non-dispersion shifted single-mode optical fiber characteristics." versus
Compared with GB/T 9771.1-2008, the main technical changes are as follows.
---Added the amendment rules (see Chapter 5);
--- Delete the A sub-category of B1.1 (see 5.2.2, 5.2.7 of the.2008 version);
---Increase the coating diameter and tolerance requirements of two specifications of.200μm and 500μm, and increase the coating layer of.200μm optical fiber/
Concentricity error requirements of the cladding (see 6.1.1, 5.1.1 of the.2008 edition);
--- Deleted the grading requirements of the attenuation coefficient, and added a table note to explain the situation where the attenuation coefficient requirements are not applicable (see 6.2.1, 5.2.3 of the.2008 edition);
---Added the requirements for attenuation uniformity (see 6.2.4);
--- Deleted the cut-off wavelength requirements of jumper cables (see 5.2.1 of the.2008 edition);
--- Deleted the requirement of screening strain, and modified the tension value corresponding to screening stress (see 6.3.1, 5.3.1 of the.2008 edition);
--- Deleted the requirements for gauge lengths of 1m, 10m, and 20m (see 5.3.2 of the.2008 edition);
---Modified the technical index requirements of the coating peeling force (peak value), and added the note for the peeling force of the optical fiber coating with a coating diameter of.200μm (see 6.3.4, 5.3.4 in the.2008 edition);
---Added the requirements of environmental test 1625nm wavelength light attenuation change (see 6.4.2);
--- Modified the requirements for the peak peel force after the environmental test, and increased the peel force of the optical fiber coating with a diameter of.200μm (see 6.4.3, 5.4.3 of the.2008 edition).
Please note that certain 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, Hu Guyue, Wang Dongxiang, Qi Wei, Qi Qingqing, Hu Peng, Xiao Chan, Wang Xiaoquan.
The previous versions of the standards replaced by this part are as follows.
---GB/T 9771.1-2000, GB/T 9771.1-2008.
Single-mode fiber for communication
Part 1.Non-dispersion shifted single-mode fiber characteristics
1 Scope
This part of GB/T 9771 specifies the rounding rules, requirements and tests for non-dispersion shifted single-mode fibers (B1.1 single-mode fibers)
method.
This section applies to sub-category B of category B1.1 single-mode optical fiber used in communication optical cables and other information transmission equipment.
Note 1.The size parameters and transmission characteristics of the optical fiber in this section refer to the technical indicators of G.652.B type optical fiber in ITU-TG.652 (2016), and the mechanical and ring
The environmental performance refers to the regulations of B1.1 type optical fiber in IEC 60793-2-50.2015.
Note 2.The zero-dispersion wavelength of the B1.1 single-mode fiber is around 1310nm, it can be used in the 1310nm wavelength region or 1550nm
Wavelength region.
Note 3.Refer to GB/T 9771.1-2008 for the technical requirements of sub-category A in category B1.1 single-mode fiber.
Note 4.Refer to Appendix A for the comparison of fiber classification in GB/T 9771, ITU-T and IEC standards.
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 references, the latest version (including all amendments) applies to this document.
GB/T 8170 Numerical rounding rules and the expression and determination of limit values
GB/T 15972 (all parts) Optical fiber test method specification
GB/T 33779.1 Optical Fiber Characteristics Test Guide Part 1.Attenuation Uniformity
ITU-TG.650.1 Single-mode fiber optic cable with linear and deterministic parameter definition and test methods
3 Terms and definitions
The terms and definitions defined by GB/T 15972, GB/T 33779.1, ITU-TG.650.1 and ITU-TG.650.2 apply to this document.
5 Rounding rules
When judging whether the value meets the standard requirements, the rounding value comparison method specified in GB/T 8170 should be used, and the measured value should be adjusted to an even number.
Round off, and then compare with the standard value.
6 requirements
6.1 Dimensions
6.1.1 Technical indicators of size parameters
The size parameter requirements of category B1.1 single-mode fiber should meet the requirements of Table 1.
6.1.2 Measurement method of dimensional parameters
The measurement methods of dimensional parameters are shown in Table 2.
6.2 Transmission characteristics
6.2.1 Attenuation coefficient
The attenuation coefficient requirements of category B1.1 single-mode fiber should meet the requirements of Table 3.
6.2.2 Discontinuity of attenuation point
At 1310nm and 1550nm wavelengths, there should be no discontinuities exceeding 0.1dB for the continuous length of a fiber.
6.2.3 Attenuation wavelength characteristics
The attenuation coefficient value in the wavelength range of 1285nm~1330nm, relative to the attenuation coefficient value of the 1310nm wavelength, should not exceed 0.04dB/km.
The attenuation coefficient value in the wavelength range of 1525nm~1575nm, relative to the attenuation coefficient value of the 1550nm wavelength, should not exceed 0.03dB/km.
6.2.4 Attenuation uniformity
At 1310nm and 1550nm wavelengths, the backscattering curve of the fiber is at any length of.2000m,
The worst value of the difference between the measured attenuation coefficient and the average attenuation coefficient of the entire section length should not be greater than 0.05dB/km.
6.2.5 Dispersion characteristics
The limit value of the dispersion coefficient D(λ) at any wavelength λ shall be calculated according to formula (1).
6.2.6 Mode field diameter
The mode field diameter requirements of category B1.1 single-mode fiber should meet the requirements of Table 5.
6.2.7 Cutoff wavelength
The cut-off wavelength of B1.1 single-mode fiber is divided into two types.
a) Cut-off wavelength of optical cable. λcc≤1260nm;
b) Cut-off wavelength of fiber. λc is not specified.
Note 1.The relationship between the measured values of λc and λcc is related to the structure and measurement conditions of the optical fiber and cable. In general, λcc< λc.
Note 2.For the cut-off wavelength of the optical fiber used in the optical cable for special applications, it is specified that λc is not greater than 1250nm. Special applications refer to the shortest length of optical cable,
The case with the largest bending radius.
Note 3.For some specific submarine cables, other λcc values may be required.
6.2.8 Macro bending loss
The fiber is loosely wound 100 times with a radius of 30mm, and the macrobending loss of the fiber measured at 1625nm should not exceed 0.1dB.
Note 1.If, due to practical reasons, less than 100 turns are selected for a 30mm bending radius test, it should be no less than 40 turns, and the macro-bending loss value decreases proportionally.
Note 2.In order to ensure that the bending loss is easy to measure and the measurement accuracy, one or several rounds of small radius optical fiber can be used to replace 100 rounds of optical fiber for testing.
Under the circumstances, the number of turns, the radius of the loop and the maximum allowable bending loss are equivalent to the loss value of the 100-turn test with a 30mm radius.
6.2.9 Longitudinal uniformity of dispersion
To be studied.
Note. At a specific wavelength, the absolute value of the dispersion coefficient of the local fiber section may deviate from the value measured for the long fiber section. If you are close to wavelength division multiplexing
(WDM) The dispersion coefficient of a working wavelength of the system is reduced to a small value, which will produce a large four-wave mixing (FWM) effect. The four-wave mixing effect can induce
The starting power is transmitted on other wavelengths or other working wavelengths. FWM power is the absolute value of dispersion, dispersion slope, operating wavelength, optical power and
A function of the distance at which FWM occurred. For dense wavelength division multiplexing (DWDM) applications in the 1550nm band, the dispersion value of this type of fiber is large enough to
In order to avoid the FWM effect, the longitudinal uniformity of dispersion is not prominent.
6.2.10 Polarization mode dispersion coefficient
This section only specifies the link PMD coefficient, and its maximum PMDQ should meet the requirements of Table 6.
6.2.11 Measurement method of transmission characteristics
The measurement methods of transmission characteristics are shown in Table 7.
6.3 Mechanical properties
6.3.1 Screening test level
The requirements for the screening test of the mechanical strength of the coated optical fiber shall meet the requirements of Table 8.
6.3.2 Tensile strength
The minimum tensile strength requirements of the optical fiber before aging should meet the requirements of Table 9.
6.3.3 Warpage characteristic parameters
The fiber curvature radius R should not be less than 4m.
6.3.4 Coating peel force
The stripping force requirements of the optical fiber coating shall meet the requirements of Table 10.
6.3.5 Dynamic fatigue parameters
The fiber dynamic fatigue parameter requirements shall meet the requirements of Table 11.
6.3.6 Test methods for mechanical properties
The test methods of mechanical properties are shown in Table 12.
6.4 Environmental performance
6.4.1 Overview
The environmental performance requirements of category B1.1 single-mode fiber include the optical attenuation changes in the environmental test and the mechanical performance requirements after the environmental test.
6.4.2 Environmental test light attenuation change requirements
The environmental test light attenuation change requirements should meet the requirements of Table 13.
6.4.3 Mechanical performance requirements after environmental test
The mechanical performance requirements after the environmental test should meet the requirements of Table 14.
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