He Zuowei, CHEN Wei, Zhang Liang, et al. Study on low-loss single-mode optical fibers for high-rate transmission systems[J]. 2015,(2):35-38. DOI: 10.13756/j.gtxyj.2015.02.011.
This letter introduces the global research advances of low-loss single-mode optical fibers and analyzes the technical approaches to their realization.On the basis of the study on the physical characteristics of silica glass
it develops the annealing process for silica fibers and reduces their inner-stress
thus lowering their attenuation.The typical attenuation values of the low-loss optical fibers massively manufactured by using our patented technologies with independent IPR at 1 310 nm
1 550 nm and 1 625 nm are 0.320dB/km
0.182dB/km and 0.195dB/km respectively
superior to those specified in the ITU-T and GB/T.