Fiber-based angular demultiplexer using nanoprinted periodic structures on single-mode multicore fibers.

ABSTRACT: Precise analysis of light beams is critical for modern applications, especially in integrated photonics, with traditional methods often struggling with efficient angular demultiplexing in compact environments. Here, we present a novel fiber-based approach that achieves angular demultiplexing through angle-sensitive coupling in nanostructure-enhanced multicore fibers. Our device uses axially symmetric nanoprinted structures to distribute the angular power spectrum of incident light over different fiber cores through higher diffraction orders. By implementing algorithmically optimized nanostructures on a seven-core single-mode fiber facet via 3D nanoprinting, we demonstrate unprecedented in-coupling efficiency over wide incident angle ranges. Our theoretical and experimental results confirm

SUBMITTER: Yermakov O 

PROVIDER: S-EPMC11889240 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature