GB/T 9771.1-2020
Single-mode optical fibres for telecommunication—Part 1: Characteristics of a dispersion unshifted single-mode optical fibre (English Version)

Scope: This part of GB/T9771 specifies the rounding rules, requirements and test methods for non-dispersion shifted single-mode optical fiber (B1.1 category single-mode optical fiber). This section applies to subcategory B of B1.1 single-mode optical fiber used in communication optical cables and other information transmission equipment. Note 1: The fiber size parameters and transmission characteristics in this section refer to ITUTG. 652 (2016) in G. 652. The technical indicators of Class B optical fiber and the mechanical and environmental performance of optical fiber refer to the provisions of Class B1.1 optical fiber in IEC60793250:2015. Note 2: The zero-dispersion wavelength of B1.1 single-mode fiber is near 1310nm. It can be used in either the 1310nm wavelength region or the 1550nm wavelength region. Note 3: For the technical requirements of subcategory A in category B1.1 single-mode optical fiber, please refer to GB/T9771.1-2008. Note 4: See Appendix A for the comparison relationship between GB/T9771 and the optical fiber classification in ITU-T standards and IEC standards.

GB/T 9771.1-2020 Referenced Document

GB/T 33779.1 Guidance for special characteristics of optical fibre—Part 1: Attenuation uniformity
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

2020 GB/T 9771.1-2020 Single-mode optical fibres for telecommunication—Part 1: Characteristics of a dispersion unshifted single-mode optical fibre
2008 GB/T 9771.1-2008 Single-mode optical fibres for telecommunication.Part 1:Characteristics of a dispersion unshifted single-mode optical fibre
2000 GB/T 9771.1-2000 The series of single-mode optical fibres for telecommunication Part 1:Characteristics of a dispersion unshifted single-mode optical fibre