Bending-insensitive, radiation-resistant single-mode optical fiber

US10295737B2 · kind B2 · utility

Assignee

• FIBERHOME TELECOMMUNICATION TECHNOLOGIES CO., LTD · CN

Inventors

• Qi Mo · 红钢城街道, CN
• Lijie Huang · 红钢城街道, CN
• Huang Yu · Tainan, TW
• Cheng Liu · Zhubei City, TW
• Wen-Jung Chen · New Taipei, TW
• Zhiqiang Yu · Dongguan, CN
• Dongxiang Wang · 红钢城街道, CN
• Bingfeng Cai · 红钢城街道, CN
• Liming Chen · Hanover, US
• Huiping Shi · 红钢城街道, CN

Key dates

• Filing date: Oct 21, 2016
• Grant date: May 21, 2019
• Expiry date: Oct 21, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/036
• WIPO field: Optics
• WIPO sector: Instruments

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%.