| 摘要 |
A filling light source (4-1;4-2) is part of a module (6-1;6-2) exchangeably mounted in the output stage in a first assembly position. The output stage has a second assembly position in which a second module comprising a filling light source can be mounted. The output stage includes an auxiliary circuit (7-2;7-1) for supplying one of the two filling light sources with a continuously decreasing second desired-power signal. An Independent claim is included for a method of exchanging filling light sources in an output stage for WDM communication. |
