High power fiber amplifier with stable output
US8711471B2 · kind B2 · utility
52Cited by
6References
34Claims
0Family size
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Key dates
| Filing date | Apr 9, 2010 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Sep 5, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1618
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A stable, single mode fiber amplifier is described. The amplifier consists of a seed source, a passive single clad multimode fiber, an active double clad multimode fiber or a multimode fiber horn and a semiconductor laser pump source. The passive fiber is packaged on a mandrel with a compound radius of curvature such that high order modes in the fiber are stripped from the core leaving only the fundamental mode. This fiber is then spliced to a multimode active fiber of similar core diameter. By exciting only the fundamental mode of this active fiber, stable single mode amplification is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.