Spatial beam reshaping and large-band nonlinear conversion in rectangular-core phosphate glass fibers

Abstract

Here we present the ability of Nd3+-doped zinc-phosphate glasses to be shaped into rectangular core fibers. At first, the physico-chemical properties of the developed P2O5-based materials are investigated for different concentrations of neodymium oxide and core and cladding glass compositions are selected for further fiber development. A modified stack-and-draw technique is used to produce multimode large rectangular-core optical fibers. Self-guided nonlinear effects acting as spatial beam reshaping processes occurring in these newly-developed photonic structures lead to the generation of spectral broadenings in the visible and near-infrared spectral domains. Graphic Abstract

Preface to the special issue on “Recent Advances in Functional Fibers”

“…The issue includes five review articles and three research articles, covering topics from theory and modelling of fiber to novel fiber manufacturing and applications in optical modulation, sensing, energy conversion, wearables, etc. Strutynski et al [15] developed zinc-phosphate glasses doped with Nd 2 O 3 of different concentrations, and observed linear evolution of the glass properties with respect to the Nd 2 O 3 concentration. Based on that they produced multimode large rectangular-core fibers with a modified stack-and-draw method, and found that self-guided nonlinear effects acting as spatial beam reshaping processes in these newly-developed photonic structures led to the generation of spectral broadenings in the visible and near-infrared spectral domains.…”