Method of making variable section fiber optics
US4707172A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1985 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Feb 22, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2203/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device for transferring the energy emitted by a high power laser onto a target characterized in that it comprises two guides of optical fibre having step index refraction distribution and at least a plastic material coating. The first guide, stiffly coupled to the laser source, is a variable section fibre with an input face of larger diameter. Guide is the second one by a uniform or variable section fibre with a larger diameter near the output terminal. The two guides are joined by a low leakage optical fibre connector, and between them an adapter can be interposed if the output section of the first guide of fibre does not coincide with the input section of the second guide of fibre. The variable section fibre can be drawn from a pre-moulded or melted material, with the speed controlled by an electronic circuit. Different kinds of pots can be utilized in order to obtain the fibre plastic coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.