Graded refractive index bending-resistant multimode obtical fiber
US9170369B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2014 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Nov 19, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/03644
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A graded refractive index bending-resistant multimode optical fiber includes a core layer and claddings. The core layer has a radius in a range of 22.5-27.5 μm; refractive indexes being a gradient-graded refractive index distribution with a distribution exponent α in a range of 1.99-2.06; and a maximum relative refractive index difference (RRID) Δ1% max in a range of 0.9%-1.3%. The claddings has an inner cladding surrounding the core layer, an intermediate cladding surrounding the inner cladding and an outer cladding surrounding the inner cladding. The inner cladding has a radius in a range of 25.5-34.5 μm, and an RRID Δ2% in a range of −0.02%-0.02%. The intermediate cladding is a pure quartz glass layer, and has a radius in a range of 30.5-49.5 μm, and an RRID Δ3% in a range of −0.01%-0.01%. The outer cladding has a radius in a range of 61.5-63.5 μm, and an RRID Δ4% is in a range of −0.20%-0.30%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.