Optical fiber with birefringence and large mode field diameter
US7158705B2 · kind B2 · utility
5Cited by
9References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2004 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Aug 30, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2203/31
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
According to the present invention the optical fiber includes a core with a first refractive index (n1) and the innermost core region with the refractive index n0, a cladding surrounding the core, the cladding having a third refractive index (n3), wherein n1>n3 and n0<n1. According to some of the embodiments the optical fiber may also include a moat surrounding and abutting the core and situated between the core and the cladding, the moat having a second refractive index (n2), wherein n3>n2. It is preferable that at least one of the core, innermost core region and/or moat has a non-circular shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.