This part of GB/T 9771 stipulates the geometric, optical, transmission characteristics, mechanical and environmental performance requirements of B1.2 cut-off wavelength shifted single-mode fiber, and specifies the measurement method of fiber characteristics. The zero-dispersion wavelength of this type of fiber is around 1310nm, the cut-off wavelength is moved to a longer wavelength, and the attenuation is the lowest in the 1550nm wavelength region, and the best working wavelength is in the range of 1530nm to 1625nm. This part applies to B1.2 single-mode optical fibers used in communication optical cables and other information transmission equipment, especially for B1.2 single-mode optical fibers used in submarine communication optical cables.
GB/T 9771.2-2008 Referenced Document
GB/T 15972.1 Generic specification for optical fibres. Part 1: General
GB/T 15972.10 Specifications for optical fibre test methods—Part 10: Measurement methods and test procedures—General and guidance*, 2021-04-30 Update
GB/T 15972.2 Generic specification for optical fibres. Part 2: Measuring methods for dimensions
GB/T 15972.20 Specifications for optical fibre test methods—Part 20: Measurement methods and test procedures for dimensions—Fibre geometry*, 2021-04-30 Update
GB/T 15972.21 Specifications for optical fibre test methods.Part 21:Measurement methods and test procedures for dimensions.Coating geometry
GB/T 15972.22 Specifications for optical fibre test methods.Part 22:Measurement methods and test procedures for dimensions.Length measurement
GB/T 15972.3 Generic specification for optical fibres. Part 3: Measuring methods for mechanical characteristics
GB/T 15972.30 Specifications for optical fibre test methods—Part 30: Measurement methods and test procedures for mechanical characteristics—Fibre proof test*, 2021-04-30 Update
GB/T 15972.31 Specifications for optical fibre test methods—Part 31: Measurement methods and test procedures for mechanical characteristics—Tensile strength*, 2021-08-20 Update
GB/T 15972.32 Specifications for optical fibre test methods—Part 32: Measurement methods and test procedures for mechanical characteristics—Coating strippability*, 2021-10-11 Update
GB/T 15972.33 Specifications for optical fibre test methods.Part 33:Measurement methods and test procedures for mechanical characteristics.Stress corrosion susceptibility
GB/T 15972.34 Specifications for optical fibre test methods—Part 34: Measurement methods and test procedures for mechanical characteristics—Fibre curl*, 2021-04-30 Update
GB/T 15972.4 Generic specification for optical fibres. Part 4: Measuring methods for transmission and optical characteristics
GB/T 15972.40 Specifications for optical fibre test methods.Part 40:Measurement methods and test procedures for transmission and optical characteristics.Attenuation
GB/T 15972.41 Specifications for optical fibre test methods—Part 41: Measurement methods and test procedures for transmission characteristics—Bandwidth*, 2021-04-30 Update
GB/T 15972.42 Specifications for optical fibre test methods—Part 42: Measurement methods and test procedures for transmission characteristics—Chromatic dispersion*, 2021-04-30 Update
GB/T 15972.43 Specifications for optical fibre test methods—Part 43: Measurement methods and test procedures for transmission characteristics—Numerical aperture*, 2021-04-30 Update
GB/T 15972.44 Specifications for optical fibre test methods—Part 44: Measurement methods and test procedures for transmission and optical characteristics—Cut-off wavelength*, 2017-07-31 Update
GB/T 15972.45 Specifications for optical fibre test methods—Part 45:Measurement methods and test procedures for transmission characteristics—Mode field diameter*, 2021-04-30 Update
GB/T 15972.46 Specifications for optical fibre test methods.Part 46:Measurement methods and test procedures for transmission and optical characteristics.Monitoring of changes in optical transmittance
GB/T 15972.47 Specifications for optical fibre test method—Part 47:Measurement methods and test procedures for transmission characteristics—Macrobending loss*, 2021-05-21 Update
GB/T 15972.48 Specifications for optical fibre test methods.Part 48:Measurement methods and test procedures for transmission and optical characteristics.Polarization mode dispersion*, 2016-04-25 Update
GB/T 15972.49 Specifications for optical fibre test methods—Part 49: Measurement methods and test procedures for transmission characteristics—Differential mode delay*, 2021-10-11 Update
GB/T 15972.5 Generic specification for optical fibres. Part 5: Measuring methods for environmental characteristics
GB/T 15972.50 Specifications for optical fibre test methods.Part 50:Measurement methods and test procedures for environmental characteristics.Damp heat(steady state)
GB/T 15972.51 Specifications for optical fibre test methods.Part 51:Measurement methods and test procedures for environmental characteristics.Dry heat
GB/T 15972.52 Specifications for optical fibre test methods.Part 52:Measurement methods and test procedures for environmental characteristics.Change of temperature
GB/T 15972.53 Specifications for optical fibre test methods.Part 53:Measurement methods and test procedures for environmental characteristics.Water immersion
GB/T 15972.54 Specifications for optical fibre test methods—Part 54: Measurement methods and test procedures for environmental characteristics—Gamma irradiation*, 2021-04-30 Update
GB/T 15972.55 Specification for optical fibre test methods.Part 55:Measurement methods and test procedures for enviromental characteristics.Hydrogen aging*, 2009-09-30 Update
GB/T 18900-2002 Test methods for polarization mode dispersion of single-mode optical fibres
ITU-T G.650.1-2004 Definitions and test methods for linear, deterministic attributes of single-mode fibre and cable Series G: transmission Systems and Media, Digital Systems and Networks Transmission media characterisistics - Optical fibre cables Study Group 15
ITU-T G.650.2-2007 Definitions and test methods for statistical and non-linear related attributes of single-mode fibre and cable Study Group 15
ITU-T G.654-2006 Characteristics of a cut-off shifted single-mode optical fibre and cable Study Group 15*, 2023-12-09 Update
GB/T 9771.2-2008 history
2020GB/T 9771.2-2020 Single-mode optical fibres for telecommunication—Part 2: Characteristics of a cut-off wavelength shifted single-mode optical fibre
2008GB/T 9771.2-2008 Single-mode optical fibres for telecommunication.Part 2:Charaterisics of a cut-off wavelength shifted single-mode optical fibre
2000GB/T 9771.2-2000 The series of single-mode optical fibres for telecommunication Part 2:Characteristics of a cut-off wavelength shifted single-mode optical fibre