Infra-red light source including a raman shifter
US7433116B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2004 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Oct 8, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2505/05
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An infrared light source includes one or more combiners that are coupled to at least a first pump laser and a second pump laser. The combiners are operable to couple a first optical signal generated by the first pump laser and a second optical signal generated by the second pump laser to a gain fiber, the gain fiber comprising a first waveguide structure. The light source also includes a Raman wavelength shifter that is coupled to the gain fiber. The Raman wavelength shifter being operable to wavelength shift based at least in part on a Raman effect. At least a portion of the Raman wavelength shifter comprising an intermediate waveguide structure that is coupled to a second waveguide structure capable of wavelength shifting at least one wavelength of the first optical signal to an intermediate wavelength in the intermediate waveguide structure and then a longer signal wavelength in the second waveguide structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.