Spun non-circular and non-elliptical core optical fibers and apparatuses utilizing the same
US9217825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2014 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Mar 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/302
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical fibers are provided for modal discrimination which include a central core and a cladding disposed about the central core. The central core has a non-circular and non-elliptical cross-section, and it is rotated about a central axis of the optical fiber along the length of the optical fiber at a selected pitch resulting in the capability of a fundamental mode beam output for large core sizes. An optical system includes a seed optical source configured to provide a seed beam and an optical amplifier configured to receive and amplify the seed beam. The optical amplifier also includes an active optical fiber having a large mode area non-circular and non-elliptical core rotated about a central axis of said active optical fiber to provide modal discrimination and fundamental mode output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.