Variable weight fiber optic transversal filter
US4997249A · kind A · utility
13Cited by
13References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1990 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Feb 26, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2861
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A transversal filter uses optical components to provide for a wide bandwi, greater than 10 GHz signal processing capability. rf modulated optical signals are fed over different lengths of optical fibers to impart appropriate tap delays and each is coupled to an integrated optical coupler. Each of the integrated optical couplers have the capability to introduce variable positive and negative weights. Incoherent summing means receive the modulated signals and feed them to an interconnected detector to thereby provide appropriate positive and negative variable weighted signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.