Ultrabroadband Near-infrared Emission Profiling in Multicore Optical Fibers Doped with Er and Yb/Tm/Ho Ions

Overview

Journal Sci Rep

Date 2025 Feb 5

PMID 39905079

Authors

Jakub Markiewicz

Marcin Kochanowicz

Tomasz Ragin

Piotr Miluski

Wojciech A Pisarski

Joanna Pisarska

Marta Kuwik

Dominik Dorosz

Martin Leich

Matthias Jager

Affiliations

Soon will be listed here.

Abstract

This paper presents novel multicore fibers with broadband emission in the 1.4-2.1 μm range. Based on our previous work with barium gallo-germanate glasses and fibers, the 4 and 11-core fiber structures, each containing core glasses doped with Er and Yb/Tm/Ho were developed. Our efforts have resulted in flat emission in 3 dB and 10 dB bands, achievable under excitation at 796 nm, 808 nm, 940 nm, and 980 nm. The measured emission spectra of these fibers are described as a superposition of emission bands from each individual core, corresponding to the transitions of Er, Tm, and Ho ions. Our method demonstrates the potential of emission profiling in multicore optical fibers as a new way to construct eye-safe broadband fiber sources.

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