Bidirectional optical link, and device for amplifying such link
US6023543A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1998 |
| Grant date | Feb 8, 2000 |
| Priority date | — |
| Expiry date | Nov 16, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2912
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An end station of a both-way optical link comprises: a receiver (RX) preceded by a receive optical amplifier (RA); a transmitter (TX) followed by a transmit optical amplifier (TA); a pump laser diode (PX) for delivering the pumping waves required by said amplifiers; and a coupler (B) of the passive type having two groups of two branches. The two branches of one group (BL and BP) are connected respectively to a line fiber (L) for both-way light guidance and to the pump (PX), the two branches of the other group (BR and BT) being connected respectively to the receive optical amplifier (RA) and to the transmit optical amplifier (TA). An in-line optical amplifier apparatus can be constituted in similar manner. The invention is applicable to telecommunications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.