Fiber optic lasers employing fiber optic amplifiers
US6289027A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1999 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Feb 19, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Ring and linear cavity, fiber optic laser systems are disclosed, employing non-invasive fiber optic amplification technology. A channel overlay waveguide is employed for amplification of optical energy evanescently coupled to the overlay waveguide from the fiber optic. One of two amplification methods can be employed. The first involves inducing stimulated emission with the overlay waveguide and the second uses a second order, non-linear frequency conversion to down-convert a high-power, short-wavelength pump signal into the waveguide to amplify the optical energy coupled thereto. Amplification of optical energy in the channel overlay waveguide can be established within a single beat length of evanescent removal to evanescent return of the optical energy to the fiber optic. Intra-cavity elements can be employed to effect, e.g., wavelength selection, optical isolation, or modulation of the resultant, optical signal propagating in the fiber optic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.