Optical fiber device, optical monitor and optical switch
US7313301B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2005 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Sep 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3548
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In order to enable coupling two multi-mode optical fibers with relatively high efficiencies while increasing the distance between lenses to be interposed as compared with the prior arts, with a device according to the present invention, a first condenser lens and a second condenser lens are arranged such that they are spaced apart from each other by four times the focal length and their optical center axes are coincident with each other. A first (second) multi-mode optical fiber is arranged such that it is spaced apart from the first (second) condenser lens by a distance larger than the focal length and the center axis of light emitted from the first (second) multi-mode optical fiber is substantially coincident with the optical center axis of the first (second) condenser lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.