Fibre-optic communications-transmission method and intermediate repeater for use in the method
US5844706A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1996 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Mar 4, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/078
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to an optical communication-transmitting system for transmitting at least one useful signal with a high bit rate, which has intermediate repeaters (ZV.sub.1 -ZV.sub.n) with optical fiber amplifiers (OV.sub.ss, OV.sub.1 -OV.sub.n, OV.sub.es) and which uses at least one additional signal of a low bit rate, for example for monitoring the intermediate repeater. For a transmission system requiring small outlay, the additional signal is transmitted on a wide band in comparison to the useful signal, for example by means of luminescence diodes (S.sub.ss, S.sub.1 -S.sub.n) and is amplified by the fiber amplifiers (OV.sub.ss, OV.sub.1 -OV.sub.n, OV.sub.es) in the same manner as the useful signal. For transmitting and receiving the additional signal, a transmitter (S.sub.1) is preferably disposed in an intermediate receiver (ZV.sub.1) upstream of the fiber amplifier (OV.sub.1) and a receiver preferably downstream thereof. The additional signal is transmitted in time-division multiplex in a frame, which assigns each intermediate repeater its own time slot. The narrow-band and the wide-band signals can be separated with simple means from each other in receivers (E.sub.1 -E…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.