Amplification optical fiber, and optical fiber amplifier and resonator using the same
US8498044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2010 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | Nov 26, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/09408
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There are provided an amplification optical fiber, and an optical fiber amplifier and a resonator using the same capable of outputting light of high beam quality even when a higher-order mode that is axially symmetric is excited in addition to LP01 mode.An amplification optical fiber 50 includes: a core 51; a clad 52 coating the core 51; and an outer clad 53 coating the clad 52, wherein the core 51 has a larger refractive index than the clad 52, the core 51 allows light having a predetermined wavelength to propagate in at least LP01 mode and LP02 mode, and in the core 51, active element that stimulates to emit light of the predetermined wavelength is doped at a higher concentration at a position where an intensity of the LP02 mode becomes zero than center of the core 51.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.