Method of forming a substantially continuous optical waveguide
US4230472A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1979 |
| Grant date | Oct 28, 1980 |
| Priority date | — |
| Expiry date | Feb 22, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B37/014
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of forming a preform or blank for an optical filament, the preform itself and the resulting optical filament is disclosed. The preform is formed by providing a substantially longitudinally continuous core member and affixing it to a starting member. Particulate material is applied to the exterior surface of the core member to form an adherent coating having an index of refraction less than that of the core member. The starting member and the core member are longitudinally translated while simultaneously applying the adherent coating of particulate material to the core member to form a continuous and substantially homogeneous adherent coating of substantially uniform thickness. The composite so formed is simultaneously or subsequently heated to sinter or consolidate the applied adherent coating thereby forming a solid blank which may be heated to the drawing temperature of the material thereof and drawn to reduce the cross-sectional area thereof forming a substantially continuous optical waveguide, the core member comprising the core while the consolidated coating comprising the cladding of the optical waveguide. The adherent coating may be sintered or consolidated to form …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.