The characteristics of high power fiber lasers are given and the pumping methods for photonic crystal fiber and helical-corefiber are introduced.
阐述了高功率光纤激光器的特点并介绍了光子晶体光纤和螺旋芯光纤的抽运耦合方式。
2
The operation principle of this helical-corefiber laser and its latest theoretical and experimental development are specified.
介绍了这种螺旋芯光纤的原理和其提高输出功率的能力，以及目前的理论与实验研究现状。
3
Using conventional coupled-mode theory, a set of coupled-mode equations are formulated for single-helix chiral fiber long-period gratings. A helical-corefiber is analyzed as an example.