Optical source implementing a doped fiber, fiber for such an optical source and method for manufacturing such a fiber
US9112328B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 3, 2010 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Jan 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/117
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical source having a fiber emitting controlled single-transverse mode radiation at a wavelength of less than 1030 nm, includes at least one laser diode suitable for emitting a pumping wave; and a section of sheathed amplifying optical fiber having two ends, the amplifying optical fiber comprising a core and a pumping sheath, the fiber being doped with a rare earth dopant; a device for coupling the pumping source in the sheath of the doped fiber, characterized in that the core of the doped fiber includes a cylindrical portion doped with a rare earth element selected among ytterbium, neodymium, and thulium, in order to obtain a refractive index of the core that is higher than the refractive index of the sheath; the excitation wavelength of the laser diode is between 750 nm and 960 nm; the diameter of the sheath is greater than 50 microns, and the surface ratio of the doped core to the pumping sheath is between 8 and 50.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.