Photonic bandgap fibers
US7418836B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2007 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Mar 15, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4206
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller dimensions of high index material in the cladding and large core size provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding features distributed along concentric rings or circles may be used for achieving wide bandgaps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.