Fiber coupler, system and associated methods for reducing back reflections
US7221823B2 · kind B2 · utility
3Cited by
19References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2002 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Dec 17, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0944
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus which couples light to a fiber from a light source at an input plane while reducing back reflections includes returning light reflected back through such that the returning light does not substantially overlap with an output of the light source in the input plane. This apparatus may include a mode matching element and/or an angular distribution altering element. The apparatus may be reciprocal. The reciprocal apparatus may prevent light traversing the apparatus again having a change in phase of light from substantially overlapping an original object in an input plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.