Optical fiber coupling/connector element
US5241613A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1992 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Jul 9, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3855
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical fiber connector element comprises a ferrule and an optical fiber stub secured within a through passage of the ferrule. The optical fiber stub comprises a core, an inner cladding having a diameter no more than six times the core diameter and a refractive index less than the core refractive index, and an outer cladding having a refractive index greater than the inner cladding refractive index and less than or equal to the ferrule refractive index. A length of the outer cladding is in intimate contact with the ferrule. A rearward part of the ferrule passage may have an inner diameter greater than the outer diameter of the fiber stub, and a plastic plug having a through passage for receiving the fiber stub may be located in the rearward part of the ferrule passage. The plastic plug has a refractive index equal to or greater than the outer cladding refractive index and less than the ferrule refractive index. The optical fiber connector element provides the convenience of a stub connector while reducing modal interference effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.