System and method for bi-directional transmission of telemetry service signals using a single fiber
US6111675A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1997 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Aug 27, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0279
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A bi-directional telemetry service channel is provided on a single optical fiber using two wavelengths that are accessible through multiplexing devices. A bi-directional telemetry service channel is also provided on a single optical fiber using only a single wavelength. A fully protected bi-directional telemetry service channel can be provided using only two optical fibers. When a single wavelength is used, a time window is provided for transmission of telemetry service signals in one direction on the optical fiber at the single wavelength, and a second time-window is provided for transmission of telemetry service signals in the opposite direction on the same optical fiber using the same wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.