3D-printed OAM beam generator with an enhanced out-of-band gain filtering characteristic

• Published in: Optics express Vol. 32; no. 26; p. 47285
• Main Authors: Li, Jianxing, Wu, Sifan, Li, Zeting, Cao, Yuanxi, Xu, Kai-Da
• Format: Journal Article
• Language: English
• Published: 16.12.2024

In this paper, a 3D-printed orbital angular momentum (OAM) beam generator is proposed with integrated gain-filtering characteristics. The proposed design is composed of an integrated all-resonator 1-to-8 filtering power divider, eight-phase delay lines with twisted waveguides, and an eight-horn circ...