Spatio-spectral effects in coupled multicore all-fiber lasers with FBG arrays

Alexey G. Kuznetsov; Alexey A. Wolf; Zhibzema E. Munkueva; Alexander V. Dostovalov; Evgeniy V. Podivilov; Sergey A. Babin

doi:10.1117/12.3000464

12 March 2024 Spatio-spectral effects in coupled multicore all-fiber lasers with FBG arrays

Alexey G. Kuznetsov, Alexey A. Wolf, Zhibzema E. Munkueva, Alexander V. Dostovalov, Evgeniy V. Podivilov, Sergey A. Babin

Author Affiliations +

Proceedings Volume 12865, Fiber Lasers XXI: Technology and Systems; 128651N (2024) https://doi.org/10.1117/12.3000464
Event: SPIE LASE, 2024, San Francisco, California, United States

Conference Poster

Abstract

Femtosecond-pulse inscription of Fiber Bragg Gratings (FBGs) in a Multicore Fiber (MCF) offers new opportunities of controlling the spatio-spectral properties of the generated beam in all-fiber scheme. With coupled cores, interference of partially reflected beams from individual FBGs in different cores becomes important. We present our recent results on the effect of narrowing/collapse of the laser spectrum generated in a cavity based on FBG array fs-inscribed in coupled cores of active (Yb-doped) MCF, which is shown to arise due to the supermodes formation and hybridisation. Output beam concentration in one core is observed at Raman tasing in passive MCF with FBG arrays and is potentially possible in Yb-doped MCFs. Applications and benefits of such all-fiber lasers will be discussed.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Alexey G. Kuznetsov, Alexey A. Wolf, Zhibzema E. Munkueva, Alexander V. Dostovalov, Evgeniy V. Podivilov, and Sergey A. Babin "Spatio-spectral effects in coupled multicore all-fiber lasers with FBG arrays", Proc. SPIE 12865, Fiber Lasers XXI: Technology and Systems, 128651N (12 March 2024); https://doi.org/10.1117/12.3000464

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