Dynamics of modal self-cleaning

Yuval Tamir; Moti Fridman

doi:10.1117/12.2648904

17 March 2023 Dynamics of modal self-cleaning

Yuval Tamir, Moti Fridman

Proceedings Volume PC12406, Real-time Measurements, Rogue Phenomena, and Single-Shot Applications VIII; PC1240605 (2023) https://doi.org/10.1117/12.2648904
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

Sending an ultrafast pulse in multimode fiber can lead to nonlinear interactions between the modes. When sending such a pulse in graded-index fibers there are cases where all the energy is transferring from the high-order modes into the lowest one. This effect is called modal self-cleaning. We developed a multimode time-lens, which measures the temporal and spatial dynamics of ultrafast signals in multimode fibers. With our system, we can detect the dynamics of each mode in time with high temporal resolution, and identify which mode is coupled to which and how the energy transfers between them. In this talk, We will present our measurement system in details and describe our novel results on modal self-cleaning. We will also comment on other multimode effects which our system can measure for the first time.

Conference Presentation

Citation Download Citation

Yuval Tamir and Moti Fridman "Dynamics of modal self-cleaning", Proc. SPIE PC12406, Real-time Measurements, Rogue Phenomena, and Single-Shot Applications VIII, PC1240605 (17 March 2023); https://doi.org/10.1117/12.2648904

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