公开(公告)号：US10295737B2

公开(公告)日：2019-05-21

申请号：US15766837

申请日：2016-10-21

Applicant: FIBERHOME TELECOMMUNICATION TECHNOLOGIES CO., LTD

Inventor： Qi Mo ,  Lijie Huang ,  Huang Yu ,  Cheng Liu ,  Wen Chen ,  Zhiqiang Yu ,  Dongxiang Wang ,  Bingfeng Cai ,  Liming Chen ,  Huiping Shi

IPC: G02B6/036 ,  G02B6/02 ,  G02B1/04

Abstract: The present invention relates to the field of single-mode optical fibers and discloses a bending-insensitive, radiation-resistant single-mode optical fiber, sequentially including from inside to outside: a core, inner claddings, and an outer cladding, all made from a quartz material. The inner claddings comprise, from inside to outside, a first fluorine-doped inner cladding and a second fluorine-doped inner cladding. The core and the first fluorine-doped inner cladding are not doped with germanium. The respective concentrations of other metal impurities and phosphorus are less than 0.1 ppm. By mass percent, the core has a fluorine dopant content of 0-0.45% and a chlorine content of 0.01-0.10%; the first fluorine-doped inner cladding has a fluorine concentration of 1.00-1.55%; and the second fluorine-doped inner cladding has a fluorine concentration of 3.03-5.00%.