Anti-cracking panda-type polarization-maintaining optical fiber

US10823911B2 · kind B2 · utility

Assignee

• YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK LIMITED COMPANY · CN

Inventors

• Kun Yang · Hubei, CN
• Weijun Tong · 红钢城街道, CN
• Beibei Cao · 红钢城街道, CN
• Wu-Der Yang · Taoyuan, TW
• Gaoqing Lei · Hubei, CN
• Xinben Zhang · Hubei, CN
• Zhendong WANG · Plano, US
• Wei Zheng · Beijing, CN
• Yilin Tong · Hubei, CN

Key dates

• Filing date: Sep 19, 2017
• Grant date: Nov 3, 2020
• Expiry date: Sep 19, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/0283
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An anti-cracking panda-type polarization-maintaining optical fiber includes a cladding layer, stress layers, and a fiber core. The fiber core is located in the center of the cladding layer. The stress layers are located symmetrically at two sides of the fiber core with a distance away from the fiber core and are located within the cladding layer. Each stress layer is enclosed at edges of their outer sides by a transition layer with a gradient refractive index. By providing the transition layer with the gradient refractive index at the edge of the outer side of the stress layer, the pressure stress at the edge of the stress layer is decomposed and released, so as to avoid cracks at the edge of the polished stress layer on the end of the optical fiber, and thus optimizes the performance of the polarization-maintaining optical fiber by decreasing the room temperature polishing cracking rate.