Patent application number | Description | Published |
20120063733 | OPTICAL FIBER, IN PARTICULAR A LASER FIBER CONTAINING A DOPED GLASS FIBER CORE AND CLADDING AROUND THE FIBERGLASS CORE - The invention relates to an optical fiber, in particular a laser fiber, containing a doped glass fiber core ( | 03-15-2012 |
20130034322 | OPTICAL WAVEGUIDE AND SEMIFINISHED PRODUCT FOR THE PRODUCTION OF AN OPTICAL WAVEGUIDE HAVING OPTIMIZED DIFFRACTION PROPERTIES - The invention relates to an optical waveguide and a semifinished product for producing an optical waveguide having optimized diffraction properties, comprising a trench structure that has a radius-dependent graded refractive index curve and/or a concentric depressed refractive index profile within a core zone ( | 02-07-2013 |
20140086544 | OPTICAL FIBER - An optical fiber has a core region, a cladding region and at least one spacer layer disposed between the core region and the cladding region. The core region is positively doped and has a positive refractive index with respect to the glass matrix of the optical fiber. The cladding region is negatively doped and has a refractive index of at most zero with respect to the glass matrix. The numerical aperture of the optical fiber is composed of variable proportions of the positively doped core region and the negatively doped cladding region and results from the refractive indices of both regions. | 03-27-2014 |
20150043880 | METHODS FOR PRODUCING A SEMIFINISHED PART FOR THE MANUFACTURE OF AN OPTICAL FIBER WHICH IS OPTIMIZED IN TERMS OF BENDING - Methods for producing a semifinished part for the manufacture of an optical fiber are disclosed. The methods are optimized in terms of bending. The methods include the steps of providing a shell tube with a shell refractive index which is lower in relation to the light-conducting core. Then, at least one protective, intermediate and/or barrier layer is applied to a radially outermost and/or innermost tube surface of the respective shell tube, wherein a build-up of light-conducting layers is realized on the inner side and/or the outer side of the shell tube. Finally, the shell tubes are joined by collapsing so as to form the semifinished part. | 02-12-2015 |