Optical core-to-core crosstalk in rod-type multicore fibers

Albrecht Steinkopff; Christopher Aleshire; Arno Klenke; Cesar Jauregui; Johannes Nold; Stefan Kuhn; Nicoletta Haarlammert; Thomas Schreiber; Jens Limpert

doi:10.1117/12.2650040

8 March 2023 Optical core-to-core crosstalk in rod-type multicore fibers

Albrecht Steinkopff, Christopher Aleshire, Arno Klenke, Cesar Jauregui, Johannes Nold, Stefan Kuhn, Nicoletta Haarlammert, Thomas Schreiber, Jens Limpert

Author Affiliations +

Proceedings Volume 12400, Fiber Lasers XX: Technology and Systems; 124000Z (2023) https://doi.org/10.1117/12.2650040
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

In this work we present a comprehensive parameter study on core-to-core power coupling in multicore fibers (MCFs). In order to do this, a simulation tool has been developed. We chose MCFs with 3×3 cores in a squared pattern with core sizes ranging between 15 and 50 μm and core-to-core distances of 1.5 to 5 times the core diameter. The central core is seeded by a perfectly matched Gaussian beam and the power evolution in each core along the fiber is calculated up to lengths of 2 m. We will show that coupling effects not only depend on the core distance and the core NA, but also on the core diameter and the wavelength. Our simulations predict that a simplified 3×3 core arrangement can be even used to quantify coupling effects in MCFs with more cores when the core-to-core power coupling is kept low. This comprehensive study is crucial for designing laser-active rod-type MCFs.

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Albrecht Steinkopff, Christopher Aleshire, Arno Klenke, Cesar Jauregui, Johannes Nold, Stefan Kuhn, Nicoletta Haarlammert, Thomas Schreiber, and Jens Limpert "Optical core-to-core crosstalk in rod-type multicore fibers", Proc. SPIE 12400, Fiber Lasers XX: Technology and Systems, 124000Z (8 March 2023); https://doi.org/10.1117/12.2650040

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