GB/T 9771.2-2008 Single-mode optical fibres for telecommunication—Part 2:Characteristics of a cut-off wavelength shifted single-mode optical fibre
GB/T 9771.2-2008 Single-mode optical fibres for telecommunication—Part 2:Characteristics of a cut-off wavelength shifted single-mode optical fibre
Basic Information
Scope
This part of GB/T 9771 specifies the requirements for the geometry, optical properties, transmission characteristics, and mechanical and environmental performance of B1.2 class single-mode optical fibers with a shifted cutoff wavelength. It also stipulates the measurement methods for fiber characteristics. The zero-dispersion wavelength of this type of fiber is around 1310 nm, and the cutoff wavelength has been shifted to a longer wavelength. The attenuation is minimal in the 1550 nm wavelength range, and the optimal operating wavelength is in the range of 1530 nm to 1625 nm.
This part is applicable to B1.2 class single-mode optical fibers used in communication optical cables and other information transmission equipment, especially those used in submarine communication optical cables.