Optical multiplexing
US5216532A · kind A · utility
7Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1990 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Sep 7, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical multiplexing system has several optical sensors connected in parallel between a source and a detector, the path length between source and detector via each sensor being different. The source is modulated at a number of different frequencies, the number being equal to that of the sensors. The output of the detector is an electrical signal which is fed to one input of a number of mixers, one for each frequency. The other input of each mixer receives a different one of each of the frequencies so that each mixer produces an output representative of different ones of the sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.