Nonlinear transition between PT-symmetric and PT-broken modes in coupled fiber lasers

Sergey V. Suchkov, Dmitry V. Churkin, Andrey A. Sukhorukov

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

We present a systematic analysis of the stationary regimes of nonlinear parity-time (PT) symmetric laser composed of two coupled fiber cavities. We find that power-dependent nonlinear phase shifters broaden regions of existence of both PT-symmetric and PT-broken modes, and can facilitate transitions between modes of different types. We show the existence of non-stationary regimes and demonstrate an ambiguity of the transition process for some of the unstable states. We also identify the presence of higher-order stationary modes, which return to the initial state periodically after a certain number of round-trips.

Язык оригиналаанглийский
Страницы (с-по)30340-30348
Число страниц9
ЖурналOptics Express
Том28
Номер выпуска21
DOI
СостояниеОпубликовано - 12 окт 2020

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