Optical data distribution network with listen-while-talk capabilities
US4573215A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1984 |
| Grant date | Feb 25, 1986 |
| Priority date | — |
| Expiry date | Feb 21, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2725
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical data distribution network including a plurality of drops and apparatus for distributing optical data signals to the plurality of drops wherein each drop has listen-while-talk capability is disclosed. Each drop comprises a single length of optical fiber for propagating transmit and receive optical signals between a directional coupler and the distributing apparatus. The directional coupler is operative to direct the transmit optical signals from an optical transmitter to the single length of optical fiber and to direct the receive optical signals from the single length of optical fiber to a first optical receiver. Each drop further includes a second optical receiver coupled to the directional coupler for receiving optical signals transmitted by the optical transmitter as directed to the second optical receiver by the directional coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.