Abstract
We discuss different types of multimodal laser field self-reproduction in stepped-index optical fibers, including invariance, rotation, and periodic self-reproduction of the field cross-section distribution. As an alternative to classical LP-modes used as a signal carrier in the optical fiber, we propose a superposition of angular harmonics that can be obtained as a special combination of LP-modes, which also shows modal properties in an optical fiber.
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Khonina, S.N., Volotovsky, S.G. Self-reproduction of multimode laser fields in weakly guiding stepped-index fibers. Opt. Mem. Neural Networks 16, 167–177 (2007). https://doi.org/10.3103/S1060992X07030071
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DOI: https://doi.org/10.3103/S1060992X07030071