Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Olympus Medical Systems Corporation

Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek

Bego Bremer Goldschlaegerei Wilh, Herbst Gmbh & Co. Kg

Anne Jans Faber

Hiroaki Kinoshita

Atsushi Goto

Konrad Wissenbach

Wilhelm Meiners

Makoto Tanabe

Stephan Dierkes

Yuko Katahira

Mathi Rongen

Jan Wilkes

Yingchao Yan

Mark P M Welters

The present invention relates to a method of producing a (shaped) ceramic or glass-ceramic article, involving the steps of: (a) providing a powder or a powder mixture comprising ceramic or glass-ceramic material, (b) depositing a layer of said powder or powder mixture on a surface, (d) heating at least one region of said layer by means of an energy beam or a plurality of energy beams to a maximum temperature such that at least a part of said ceramic or glass-ceramic material in said at least one region is melted and (e) cooling said at least one region of said layer so that at least part of the material melted in step (d) is solidified, such that the layer is joined with said surface in said at least one region. The invention also relates to ceramic or glass-ceramic articles and their use.

Ceramic or glass-ceramic article and methods for producing such article

A glass for a light guide fiber GA1 is used in a core of a fiberof a light guide, and has a refractive index nd between 1.56 and 1.74. The glass for a light guide fiber GA1 has the following composition: (A) SiO: 20 to 55 wt %, (B11) BO: 0 to 2.0 wt %, (B2) does not contain POand GeO, (C1) (BaO+SrO+LaO+LuO+TaO+GdO+WO): 39 to 46 wt %, (D1) ZnO: 4 to 16 wt %, (E) does not contain AlO, (F) does not contain ZrO, (G) does not contain PbO and AsO, (H1) (NaO+KO): 4 to 10 wt %, (I) SbO: 0 to 0.050 wt %, and (J1) (NaSO+KSO): 0.32 to 0.78 wt %.

Glass for light guide fiber

The present invention relates to a planar optical waveguide device, especially an optical amplifier, comprising: a substrate (11); an active guiding layer (13) arranged on the substrate (11); a bottom layer (12) arranged between the active guiding layer (13) and the substrate (11); a top cladding layer (14) arranged over the active guiding layer (13). According to the invention, the active guiding layer (13) has the following composition:

Erbium-doped planar waveguide

Growing community of inventors

Veldhoven, Netherlands

Anne Jans Faber