19 November 2003 Multicore fiber laser phase-locking by virtue of fractional Talbot effect
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Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.527586
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy
Abstract
Multicore fiber (MCF) can absorb pump radiation at small length giving opportunity to construct compact fiber laser. Phase-locking of generation in different microcores improves the output radiation beam quality. We have developed simple analytical description of multiple imaging of periodical field distribution propagating in space -- fractional Talbot effect, and have shown that this effect allows phase-locking MCF ever in the case of large variation of microcore parameters. The reason is all of the microcores to be equally coupled each with other: the global (parallel) coupling. Partial phase-locking has been demonstrated in experiment with fiber laser, consisting from 18-cores MCF and ¼-th Talbot length annular waveguide.
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Dmitri V. Vysotsky, Nickolai N. Elkin, Anatoly P. Napartovich, Marc Wrage, Peter Glas, "Multicore fiber laser phase-locking by virtue of fractional Talbot effect", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.527586; https://doi.org/10.1117/12.527586
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