GB/T 9771.6-2020Single-mode optical fibres for telecommunication—Part 6: Characteristics of a fibre with non-zero dispersion for wideband optical transport (English PDF)

Foreword

GB/T 9771 "Single Mode Optical Fiber for Communication" is divided into the following 7 parts.

---Part 1: Non-dispersion shifted single-mode fiber characteristics;

---Part 2: Characteristics of cut-off wavelength shifted single-mode fiber;

---Part 3: Characteristics of non-dispersion-shifted single-mode fiber with extended wavelength band;

---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 optical fiber for wide-wavelength optical transmission;

---Part 7: Characteristics of single-mode optical fiber with insensitive bending loss for access network.

This part is Part 6 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 9771.6-2008 "Single-mode optical fiber for communication. Part 6: Non-zero dispersion single-mode light for wide-wavelength light transmission Fiber characteristics.

Compared with GB/T 9771.6-2008, the main technical changes in this part are as follows.

--- Added overview and contract modification rules (see Chapter 5, Chapter 6);

--- Added 200µm and 500µm coating diameters and tolerances, 200µm fiber coating/cladding concentricity error Poor requirements (see 7.1.1);

--- Modify the optical characteristics and transmission characteristics to transmission characteristics, and adjust the mode field diameter from the size parameter to the transmission characteristics (see 7.1, 7.2, 5.1 and 5.2 of the 2008 edition);

--- Increased attenuation uniformity requirements (see 7.2.4);

--- Removed the cut-off wavelength of the jumper cable (lambdacj) (see 5.2.1 of the 2008 edition);

--- Modify the WDM system to DWDM system, delete the note 2 of the longitudinal uniformity of dispersion (see 7.2.9, 2008 version 5.2.6);

--- Modify the tension value corresponding to the screening stress (see 7.3.1, 5.3.1 of the 2008 edition);

--- Removed the tensile strength requirements for gauge lengths of 1m, 10m, and 20m, and added the table note that the tensile strength value decreases with the gauge length increase Content (see 5.3.2 of the 2008 edition);

--- Revised the peeling force requirements of the coating (see 7.3.4, 6.4.3, 5.3.4, 5.4.3 of the 2008 edition);

--- Increased the requirements of environmental test at 1625nm wavelength light attenuation change (see 7.4.2).

--- Increased the correspondence between GB/T 9771 and IEC standard and ITU-T standard single-mode fiber code (see Appendix A).

1 Scope

This part of GB/T 9771 stipulates the repair of non-zero dispersion single-mode optical fiber (hereinafter referred to as B5 single-mode optical fiber) for wide-wavelength optical transmission About rules, performance requirements and test methods.

This section applies to B5 single-mode optical fibers used in communications optical cables and other information transmission equipment.

2 Normative references

The following documents are essential for the application of this document. For dated reference documents, only the dated version applies to this document. For the cited documents without date, the latest version (including all amendments) applies to this document.

GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values

GB/T 15972 (all parts) specification of optical fiber test method

GB/T 33779.1 Guidelines for testing optical fiber characteristics Part 1: Attenuation uniformity

ITU-T G.650.1 Single-mode fiber optic cable linear and deterministic characteristics of parameter definition and test method (Definitionsandtest methodsforlinear,deterministicattributesofsingle-modefibreandcable)

ITU-T G.650.2 Parameter definition and test method of statistical and non-linear characteristics of single-mode optical fiber cable (Definitionsandtest methodsforstatisticalandnon-linearrelatedattributesofsingle-modefibreandcable)

3 Terms and definitions

The terms and definitions defined in GB/T 15972, GB/T 33779.1, ITU-T G.650.1 and ITU-T G.650.2 apply to this document.

4 Acronyms

The following abbreviations apply to this document.

CWDM. Coarse Wavelength Division Multiplexing (CoarseWavelengthDivisionMultiplexing)

DWDM. Dense Wavelength Division Multiplexing

FTTH. Fiber to the Home (FibreToTheHome)

FWM. Four Wave Mixing (FourWaveMixing)

PMD. Polarization Mode Dispersion (PolarizationModeDispersion)

PMDQ. Statistical parameter of link PMD coefficient (Statistical parameter for link PMD)

5 Overview

The dispersion value of B5 single-mode optical fiber remains non-zero in the entire range of 1460nm~1625nm, it is suitable for 1460nm~ Dense wavelength division multiplexing (DWDM) applications or coarse wavelength division multiplexing (CWDM) applications in the 1625nm band.

Note: For the correspondence between GB/T 9771 and ITU-T and IEC standards for single-mode fiber codes, see Appendix A.