Hollow core optical fiber and method of making the same
US11221444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2019 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Dec 5, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2203/42
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The selection of starting materials used in the process of forming an MCR is controlled to specifically define the physical properties of the core tube and/or the capillary tubes in the local vicinity of the core tube. The physical properties are considered to include, but are not limited to, the diameter of a given tube/capillary, its wall thickness, and its geometry (e.g., circular, non-circular). A goal is to select starting materials with physical properties that yield a final hollow core optical fiber with a “uniform” core region (for the purposes of the present invention, a “uniform” core region is one where the struts of cladding periodic array surrounding the central core are uniform in length and thickness (with the nodes between the struts thus being uniformly spaced apart), which yields a core wall of essentially uniform thickness and circularity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.