Transverse electrical filter operating optically
US5475525A · kind A · utility
58Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1992 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Nov 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S372/70
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a programmable transverse filter required for the matched filtering of signals with very wide passband. The signals to be filtered modulate one or more optical carriers (F1) in a modulator (MOD). Each carrier is distributed over several channels by a distributor (DIV). A delay creation circuit (CR1 to CRn) is provided in each channel. These channels are next summed after having been correctly delayed and assigned a coefficient characteristic of the signal to be detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.