| 摘要 |
Includes optical amplification fiber (20) with a multi-core structure composed of first waveguide (21) that pumping light enters and that transmits the pumping light; second waveguide (22) composed of a core containing a laser medium and for generating laser, and a clad for transmitting pumping light; and a third waveguide containing first waveguide (21) and second waveguide (22). Optical amplification fiber (20) is wound while the curvature radius is being changed to provide small-size, high-power fiber laser apparatus. |
