Optical fiber
US9964697B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2016 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | May 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12119
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical fiber includes: a core; and a clad which is formed so as to surround an outer circumference of the core concentrically with the core, the clad having at least an inner cladding layer adjacent to the outer circumference of the core and an outer cladding layer formed on an outer circumference of the inner cladding layer, wherein a refractive index of the outer cladding layer is Δ3, and an outer circumference radius of the outer cladding layer is r3, a relationship of Δ1max>Δ3>Δ2min is satisfied, a relationship of Δ3−Δ2min≤0.08% is satisfied, a relationship of r1<r2<r3 is satisfied, a relationship of 0.35≤r1/r2≤0.55 is satisfied, a cable cut-off wavelength is less than or equal to 1260 nm, and an MFD at a wavelength of 1310 nm is 8.6 μm to 9.2 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.