Filter fiber for use in Raman lasing applications and techniques for manufacturing same
US8428409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2010 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Apr 19, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/2375
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical waveguide has a refractive index variation that is structured to provide the fiber, over a wavelength operating range, with an effective area supporting multiple Stokes shifts and with a negative dispersion value at a target wavelength within the wavelength operating range. The refractive index variation is further structured to provide the fiber with a finite LP01 cutoff at a wavelength longer than the target wavelength, whereby the LP01 cutoff wavelength provides a disparity, for a selected bending diameter, between macrobending losses at the target wavelength and macrobending losses at wavelengths longer than the target wavelength, whereby Raman scattering is frustrated at wavelengths longer than the target wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.