Free space high power fiber coupler
US7580600B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2009 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | Feb 11, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3813
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A waveguide receiving light which propagates through free space is configured with a coupler and delivery fiber. The coupler, including a GREEN or multimode fiber, has a protective coating and so does the delivery fiber. Upon splicing of the coupler to the delivery fiber, the protective coatings of the respective coupler and delivery fiber are spaced apart exposing thus end regions of the respective coupler and fiber. The exposed regions are covered by a light stripper made of material having a refractive index which is substantially the same as or greater than that one of outer claddings. Accordingly, the light stripper minimizes the amount of light capable of coupling into the protective coatings of the respective delivery and coupler fibers enhancing thus a power handling capabilities of the waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.