Design of large mode area all-solid anti-resonant fiber

Xin Zhang; Shoufei Gao; Yingying Wang; Wei Ding; Pu Wang

doi:10.1117/12.2577404

5 March 2021 Design of large mode area all-solid anti-resonant fiber

Xin Zhang, Shoufei Gao, Yingying Wang, Wei Ding, Pu Wang

Proceedings Volume 11665, Fiber Lasers XVIII: Technology and Systems; 116651V (2021) https://doi.org/10.1117/12.2577404
Event: SPIE LASE, 2021, Online Only

Abstract

High-power fiber lasers have experienced a dramatic development over the last decade. Further increasing the output power needs an upscaling of the fiber mode area, while maintaining a single-mode output. Here, we propose an all-solid anti-resonant fiber (ARF) structure, which ensures single mode operation in broadband by resonantly coupling high order modes (HOMs) into the cladding. A series of fibers with core sizes ranging from 40 to 100 μm are proposed exhibiting maximum mode area exceeding 5000 μm². Numerical simulations show this resonant coupling scheme provides a HOMs suppression ratio more than 20 dB, while keeping the fundamental mode loss lower than 1 dB/m. The proposed structure also exhibits high tolerance for core index depression.

Conference Presentation

Citation Download Citation

Xin Zhang, Shoufei Gao, Yingying Wang, Wei Ding, and Pu Wang "Design of large mode area all-solid anti-resonant fiber", Proc. SPIE 11665, Fiber Lasers XVIII: Technology and Systems, 116651V (5 March 2021); https://doi.org/10.1117/12.2577404

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