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arXiv · 1606.03916

Exact control of parity-time symmetry in periodically modulated nonlinear optical couplers

Baiyuan Yang·Xiaobing Luo·QiangLin Hu·XiaoGuang Yu
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Abstract

We propose a mechanism for realization of exact control of parity-time (PT) symmetry by using a periodically modulated nonlinear optical coupler with balanced gain and loss. It is shown that for certain appropriately chosen values of the modulation parameters, we can construct a family of exact analytical solutions for the two-mode equations describing the dynamics of such nonlinear couplers. These exact solutions give explicit examples that allow us to precisely manipulate the system from nonlinearity-induced symmetry breaking to PT symmetry, thus providing an analytical approach to the all-optical signal control in nonlinear PT-symmetric structures.

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Baiyuan Yang, Xiaobing Luo, QiangLin Hu, XiaoGuang Yu. 2016-06-13. Exact control of parity-time symmetry in periodically modulated nonlinear optical couplers. https://doi.org/10.1103/physreva.94.043828

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