High-bandwidth bend-insensitive multimode optical fiber

US10317619B2 · kind B2 · utility

Assignee

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

Inventors

• Runhan Wang · Hubei, CN
• Rong Huang · Longbeilingcun, CN
• Haiying Wang · Shandong, CN
• Ruichun Wang · Hubei, CN
• Shengya Long · Hubei, CN

Key dates

• Filing date: Oct 9, 2016
• Grant date: Jun 11, 2019
• Expiry date: Oct 9, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/028
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A high-bandwidth bend-insensitive multimode optical fiber includes a core and a cladding. A refractive index profile of the core has a parabola shape and a distribution index thereof is α. The core has a radius of 23-27 μm. A maximum relative refractive index difference of a central position of the core is 0.9%-1.2%. The core is a germanium-fluorine co-doped silicon dioxide glass layer. The central position of the core has a minimum amount of fluorine doped, and a mass percentage of fluorine content is CF,min. A mass percentage of fluorine content of the core changes with the radius according to a function. The cladding successively comprises an inner cladding, a trench cladding, and an outer cladding from inside to outside. The optical fiber reduces bandwidth-wavelength sensitivity while improving bandwidth performance; is compatible with existing OM3/OM4 multimode optical fibers, and support wavelength-division multiplexing technology in a wavelength range of 850-950 nm.