Micro-structured fiber profiles for mitigation of bend-loss and/or mode distortion in LMA fiber amplifiers, including dual-core embodiments
US7924500B1 · kind B1 · utility
60Cited by
27References
37Claims
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Key dates
| Filing date | Jul 8, 2008 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | May 1, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/07
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus and method for compensating for mode-profile distortions caused by bending optical fibers having large mode areas. In various embodiments, the invention micro-structures the index of refraction in the core and surrounding areas of the inner cladding from the inner bend radius to the outer bend radius in a manner that compensates for the index changes that are otherwise induced in the index profile by the geometry and/or stresses to the fiber caused by the bending.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.