Smirnov, Sergey ValeryevichMakarenko, Maxim O.Suchkov, SergeyVatnik, I DChurkin, D VSukhorukov, Andrey2021-08-27May 14-199781943580279http://hdl.handle.net/1885/245837We propose a fiber laser composed of coupled ring cavities with gain and loss, featuring parity-time transition between symmetry-broken single-mode and bistable symmetric regimes, controllable by static phase shifters without active modulationThis work was supported by the Russian Science Foundation (16-12-10402) and the Australian Research Council (DP160100619)application/pdfen-AU© OSA 2017 ©2017 IEEEFiber devices and optical amplifiersLasers, fiberOptical resonators201710.1364/CLEO_AT.2017.JTu5A.582020-11-23