Selective mode suppressing multi-mode fiber optic cable for increased bandwidth
US10466412B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2018 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Aug 31, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/03627
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multi-mode optical fiber includes a glass center for conducting fundamental and high order modes of light waves, the high order modes including a first desired group of high order modes and a second undesired group of high order modes. A cladding surrounds the glass center, the glass center and cladding forming a core. A trench within the cladding surrounds the glass center reflecting the first and second groups of high order modes into the core. An acrylic layer surrounds the core. A buffer coating of polymer surrounds the acrylic layer and the core. The buffer coating is a pressure extruded polymer, where the buffer coating retains at least some of the pressure from the pressure extrusion and applies continuous pressure to the acrylic layer and the core therein, along the length of the fiber, such that the at least the first group of desired high order modes are permitted to be transmitted through the core and where the second group of undesired high order modes are suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.