| 简介 |
The invention relates to an optical waveguide (3) as laser medium or amplifier medium for high-performance operation, wherein the optical waveguide (3) is an optical fibre, the light-guiding core of which is doped with rare earth ions at least in some areas. The problem addressed by the invention is that of providing an optical waveguide as laser medium or amplifier medium and a laser/amplifier combination implemented thereby, in which the output signal of the laser medium or amplifier medium is better stabilised. This problem is solved according to the invention in that the maximum small signal amplification of the optical waveguide (1), due to the concentration of the rare earth ions and/or the distribution thereof in the light-guiding core, is up to 60 d B, preferably up to 50 d B, more preferably up to 40 d B, particularly preferably up to 30 d B. The invention further relates to the use of such an optical waveguide as amplifier fibre (3) in a laser/amplifier combination. |
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