Verfahren und Vorrichtung zur Verstärkung von aus Wellenlängenmultiplex aufbereiteten Kanälen

摘要

The method involves optimising the use of the input and output amplifiers (OA1,OA2) by applying different gains and introducing an intermediate stage of wavelength selection. The input amplifier (OA1) is followed by a coupler (M1) which introduces a pumping wave (OP1) from a laser (L). The wavelength selector (F) may be a tuned filter adjusted to one of the wavelengths of the input multiplex. The output amplifier (OA2) has a similar coupler (M2) for its pumping wave (OP2), which is derived from the same laser by a pumping coupler (CP).