Optical fiber system and method for carrying both CATV and Ethernet signals
US7489872B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2004 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Jan 9, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/25751
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention is an optical fiber system and method for carrying both CATV and Ethernet signals. The digital signals are translated into higher band by a direct up/down conversion so that analog signals and digital signals are treated as different frequency bands of electrical signals. Then, all the signals are mixed/divided by a power combiner/divider. And then, by using optoelectronic devices, the signals are processed with optoelectronic conversion. The converted optical signals are transmitted in a fiber or a related optical channel having low channel loss yet high capacity. To sum up, the present invention can transmit digital signals together with analog signals in a single wavelength to save the cost of an optical signal system and to provide a convenience on rearranging the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.