Optical fused couplers
US4798436A · kind A · utility
46Cited by
6References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 20, 1987 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Mar 20, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fused optical fibre coupler in which one of the fibres has a propagation constant which in the coupling region is slightly different from that of the other. The propagation constant difference can be arranged to provide selected splitting ratios over a relatively wide wavelength range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.