New mechanism of the mode coupling in multi-core fiber lasers

A. S. Kurkov; S. A. Babin; I. A. Lobach; S. I. Kablukov

doi:10.1117/12.761521

25 February 2008 New mechanism of the mode coupling in multi-core fiber lasers

A. S. Kurkov, S. A. Babin, I. A. Lobach, S. I. Kablukov

Proceedings Volume 6873, Fiber Lasers V: Technology, Systems, and Applications; 68731Q (2008) https://doi.org/10.1117/12.761521
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

We present the first experimental demonstration of strong coupling between the core modes in multi-core fibers (MCF) regardless of large spacing (~28μm) between them. The effect is very sensitive to bending of the fiber and is observed in the MCF laser as well as in the probe beam schemes. We explain the observed effect by a mechanism of the mode coupling based on their indirect interaction inside the fiber via intermediate cladding mode, analogues to the Bragg mode. 70% of power conversion from one core to another with beating length of tens of centimeters in 4-core MCF is measured.

Citation Download Citation

A. S. Kurkov, S. A. Babin, I. A. Lobach, and S. I. Kablukov "New mechanism of the mode coupling in multi-core fiber lasers", Proc. SPIE 6873, Fiber Lasers V: Technology, Systems, and Applications, 68731Q (25 February 2008); https://doi.org/10.1117/12.761521

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