NIR and visible structured beam generation with a dual-force mechanical long-period fiber grating

Wen-Hsuan Kuan, Xin-Yu Hou, Kuei-Huei Lin +1

This work presents tunable generation of vortex, vector, and flat-top 1060-nm NIR beams in a few-mode fiber with a dual-force mechanical long-period fiber grating. By varying the a…