| 摘要 |
The invention relates to a method and a device for amplifying optical signal waves guided in a first multi-core optical fibre (1), said first multi-core optical fibre (1) comprising a plurality of cores (1') with a predetermined core distance and a predetermined core (1') geometry in relation to one another, at least one signal wave mode being capable of propagation in each core (1'), and each signal wave being amplified in an optically-pumped amplifying optical fibre, a first optical field transformation (FT1) taking place wherein each signal wave is coupled out of a core (1') of the first multi-core optical fibre (1) respectively and the spatial distance between the signal waves of different cores (1') is increased with regard to the predetermined core distance of said first multi-core optical fibre (1), and a second optical field transformation (FT2) taking place which, in particular, is inverse to the first, wherein the increased spatial distance of the signal waves of different cores (1') is reduced to a predetermined core distance of a second multi-core optical fibre (5) and each signal wave is coupled into the corresponding core (5') of said second multi-core optical fibre (5). Between the first and the second optical field transformations (FT1, FT2), each signal wave of each core (1') is coaxially superimposed with a pump wave that is supplied individually for each core (1'). |
