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20 March 2023 Optimal input excitation for SBS suppression in multimode fibers
Kabish Wisal, Chun-Wei Chen, Zeyu Kuang, Stephen C. Warren-Smith, Owen D. Miller, Hui Cao, A. Douglas Stone
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Proceedings Volume PC12415, Physics and Simulation of Optoelectronic Devices XXXI; PC1241509 (2023) https://doi.org/10.1117/12.2649470
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
Multimode fibers provide a promising platform to efficiently suppress Stimulated Brillouin Scattering (SBS) by controlling input excitation. We demonstrate SBS suppression can be formulated as a problem of optimization of the input power distribution among the fiber modes. We provide a method to obtain the optimal power distribution based on linear programming. The SBS growth rate depends linearly on the input power distribution, allowing us to map SBS suppression into a constrained linear optimization, solvable numerically. We show that for a highly multimode step index fiber, optimal input excitation gives 9.5 times higher SBS threshold compared to fundamental mode-only excitation.
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Kabish Wisal, Chun-Wei Chen, Zeyu Kuang, Stephen C. Warren-Smith, Owen D. Miller, Hui Cao, and A. Douglas Stone "Optimal input excitation for SBS suppression in multimode fibers", Proc. SPIE PC12415, Physics and Simulation of Optoelectronic Devices XXXI, PC1241509 (20 March 2023); https://doi.org/10.1117/12.2649470
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KEYWORDS
Multimode fibers
Computer programming
MATLAB
Scattering
Step index fibers
Transform theory
Wavefronts
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