Compensation of thermally induced refractive index distortions in an optical gain medium or other optical element
US8643942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2010 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Mar 20, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/094003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In various embodiments, an optical element, e.g., an optical fiber, may be configured to compensate for thermal lensing. For example, thermal lensing may be caused by light power dissipation within an optical fiber, which may include a fiber core that guides amplified light along the longitudinal dimension of the fiber core. Thermal lensing from a thermally induced change in material refractive index as a function of position along dimensions perpendicular to the fiber's longitudinal dimension may be at least partially compensated or offset when light is guided by the fiber core by a designed-in effective refractive index profile selected such that the designed-in material refractive index of the fiber core changes as a function of transverse position within the fiber core, or by selection of a favorable cross-sectional core shape in a plane perpendicular to the longitudinal dimension of the fiber core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.