Modified PM tap couplers
US6674943B2 · kind B2 · utility
1Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | May 14, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2843
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fused optical coupler has a PM and a non-PM fiber with equal clad diameters. The fibers are plaited together without applying torsional force on either fiber, fused and stretched to a degree resulting in a tap ratio not more than 10% and PER higher than about 20 dB.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.