3 Fibre I and Q coupler
US6859586B2 · kind B2 · utility
3Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2002 |
| Grant date | Feb 22, 2005 |
| Priority date | — |
| Expiry date | Jun 28, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/2865
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical coupler 10 comprising at least three fibres 12, 14 and 16, portions of the fibres being fused to each other to form a coupling region 30 operable to couple light therebetween. At least two of the fibres have inputs 18 and/or 20 and/or 22 and at least two of the fibres have outputs 24 and/or 26 and/or 28. In use, on illumination of at least two of the inputs light intensity is emitted from a plurality of the outputs having a substantially asymmetric phase relationship, such as, for example, a quadrature phase relationship between two of the outputs. The invention also provides for methods of making such a device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.