US 12,252,431 B2
Quartz fibre with hydrogen barrier layer and method for the production thereof
Wolfgang Haemmerle, Jena (DE)
Assigned to J-FIBER GMBH, Jena (DE)
Appl. No. 17/617,326
Filed by j-fiber GmbH, Jena (DE)
PCT Filed Jun. 8, 2020, PCT No. PCT/EP2020/065810
§ 371(c)(1), (2) Date Dec. 8, 2021,
PCT Pub. No. WO2020/249508, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 10 2019 115 928.8 (DE), filed on Jun. 12, 2019.
Prior Publication US 2022/0227657 A1, Jul. 21, 2022
Int. Cl. C03B 37/012 (2006.01); C03B 37/018 (2006.01); C03B 37/027 (2006.01); C03C 3/06 (2006.01); C03C 13/04 (2006.01); C03C 25/6226 (2018.01)
CPC C03B 37/01211 (2013.01) [C03B 37/018 (2013.01); C03B 37/027 (2013.01); C03C 3/06 (2013.01); C03C 13/046 (2013.01); C03C 25/6226 (2013.01); C03B 2201/075 (2013.01); C03B 2201/12 (2013.01); C03C 2201/12 (2013.01); C03C 2203/40 (2013.01); C03C 2203/50 (2013.01); C03C 2213/00 (2013.01)] 9 Claims
OG exemplary drawing
 
9. A method of manufacturing a quartz glass fibre, said method comprising the steps of:
a) producing a quartz glass primary preform by modified chemical vapor deposition (MCVD) in a quartz glass substrate tube;
b) inserting the quartz glass primary preform with a fluorine-doped radial layer on the fibre core into a glass jacketing tube containing chlorine,
c) irradiating defect-generating ultra-violet (UV) radiation into the cross-sectional area of the glass jacketing tube while combining the quartz glass primary preform with the glass jacketing tube in the jacketing process to form a cladding layer on the fibre core to a secondary preform, wherein only the glass jacketing tube is irradiated with defect-generating radiation; and
d) pulling a quartz glass fibre from the secondary preform.