Title: Method of mfg. optical fibres having core and cladding of glass applying rod-in-tube technique
Application Number: 87104844 Application Date: 1987.07.11
Publication Number: 1016011 Publication Date: 1988.01.27
Approval Pub. Date: 1991.08.14 Granted Pub. Date: 1991.08.14
International Classifi-cation: C03B37/012
Applicant(s) Name: N.V. Philips Address:
Inventor(s) Name: Jongeling Leendert Bastiaan;Papanikolau Emmanuel;P
Attorney & Agent: WU ZENGYONG CAO JIHONG
Abstract:
    The invention relates to a method of manufacturing optical fibres in which a quartz glass tube is coated on the inside with core material, the assembly is contracted to form a solid rod which is then inserted into a quartz glass tube, after which the assembly is drawn. The last tube is thermally treated to eliminate contaminations at the surface which may detrimentally influence the tensile strength of the ultimate fibre.
Time: 9