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See Chinese contents: GB/T 9771.1-2008 GB/T 9771.1-2008: Single-mode optical fibres for telecommunication -- Part 1: Characteristics of a dispersion unshifted single-mode optical fibre
This Part of GB/T 9771 specifies the geometric characteristics, optical characteristics, transmission characteristics, and mechanical property and environment performance requirements of Class-B1.1 dispersion unshifted single-mode optical fiber; the measurement method for the characteristics of optical fiber. The zero-dispersion wavelength of this class of optical fiber is around 1,310 nm. It can be adopted in 1,310 nm wavelength region and 1,550 nm wavelength region.
