| abstract |
An optical amplification device for a Spatial Division Multiplexing optical fiber, comprising: n- a coarse amplification section (2) connected an input section and comprising an Erbium doped optical waveguide arranged for amplifying all optical signals received in the input section, n- a spatial demultiplexing section (7), n- a spatial multiplexing section (10), n- a plurality of optical fine adjustment at (8) each arranged between the spatial demultiplexing section and the spatial multiplexing section, wherein each optical fine adjustment path comprises an independent optical power adjustment component (9) adapted to adjust power of the optical signal carried on the corresponding optical fine adjustment path. |