Photonic band gap fibers using a jacket with a depressed softening temperature
US9096455B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2010 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Jul 3, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2203/42
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is generally directed to a photonic bad gap fiber and/or fiber preform with a central structured region comprising a first non-silica based glass and a jacket comprising a second non-silica based glass surrounding the central structured region, where the Littleton softening temperature of the second glass is at least one but no more than ten degrees Celsius lower than the Littleton softening temperature of the first glass, or where the base ten logarithm of the glass viscosity in poise of the second glass is at least 0.01 but no more than 2 lower than the base ten logarithm of the glass viscosity in poise of the first glass at a fiber draw temperature. Also disclosed is a method of making a photonic bad gap fiber and/or fiber preform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.