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24 October 2017 PT-symmetry of coupled fiber lasers
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Proceedings Volume 10457, AOPC 2017: Laser Components, Systems, and Applications; 104572Y (2017)
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
In this work, we propose a concept of a coupled fiber laser exhibiting PT-symmetry properties. We consider a system operated via Raman gain. The scheme comprises two identical fiber loops (ring cavities) connected by means of two fiber couplers with variable phase shift between them. We show that by changing the phase shift one can switch between generation regimes, realizing either PT-symmetric or PT-broken solution. Furthermore, the paper investigates some peculiarities of the system such as power oscillations and the role of nonlinear phase shift in fiber rings.
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Sergey V. Smirnov, Dmitry V. Churkin, Maxim Makarenko, Ilya Vatnik, Sergey V. Suchkov, and Andrey A. Sukhorukov "PT-symmetry of coupled fiber lasers", Proc. SPIE 10457, AOPC 2017: Laser Components, Systems, and Applications, 104572Y (24 October 2017);

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