Method for fabricating a preform for a plastic optical fiber and a preform for a plastic optical fiber fabricated thereby
US6429263B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2001 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Jan 21, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/00682
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for fabricating a preform for a plastic optical fiber, having continuous refractive index profile in a radial direction, comprising a firs step of introducing a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, to a cylindrical reactor and polymerizing the mixture in a centrifugal field generated by rotating the reactor; a second step of compensating for a void formed by volume shrinkage from the polymerization in the first step with a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, and polymerizing the mixture in a centrifugal field generated by rotating the reactor, and a third step of repeating the second step until there is no void after polymerization
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.