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.
申请公布号
EP2715419(A2)
申请公布日期
2014.04.09
申请号
EP20120724120
申请日期
2012.05.24
申请人
J-PLASMA GMBH
发明人
AUTH, MATTHIAS;KOETZING, JOERG;HEIN, HARALD;POPPITZ, ELKE;HAEMMERLE, WOLFGANG;BREHM, LOTHAR;GENZ, CHRISTIAN