High numerical aperture fiber
US7526166B2 · kind B2 · utility
73Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2007 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Aug 8, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/03633
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical fiber comprising: a silica based core having a first index of refraction n1; and at least one silica based cladding surrounding the core, the at least one silica based cladding comprising index lowering non-periodic voids containing a gas, wherein at least 80% of said voids have a maximum cross-sectional dimension of less than 2000 nm, and the NA of the fiber layer situated immediately adjacent to and inside said at least one silica based cladding is at least 0.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.