Polarization-maintaining multi-core fiber

US11614581B2 · kind B2 · utility

Assignee

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

Inventors

• Xinben Zhang · Hubei, CN
• Ming Tang · Hubei, CN
• Chen-Sheng Yang · Kaohsiung, TW
• Yue Meng · Hubei, CN
• Kun Yang · Hubei, CN
• Shen Peng · Hubei, CN
• Chi Zhang · Kunshan, CN
• Weijun Tong · 红钢城街道, CN

Key dates

• Filing date: Jun 18, 2020
• Grant date: Mar 28, 2023
• Expiry date: Jun 19, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/0365
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A polarization-maintaining multi-core fiber includes a plurality of fiber core areas and a main outer cladding. The fiber core areas include one central fiber core area, and two or more than two outer fiber core areas equidistantly and uniformly arranged around the central fiber core area that is a polarization-maintaining fiber core area. Each outer fiber core area includes a fiber core and an inner cladding surrounding a core layer. A portion outside the fiber core areas is the main outer cladding. The fiber can greatly enhance spectral efficiency of an optical transmission system, and improve fiber communication capacity. The arrangement of the polarization-maintaining fiber core area provides a waveguide structure with a function of maintaining polarized light, which can be used for transmission of local light.