https://www.selleckchem.com/pr....oducts/ldc203974-imt
We analyze the parity-time (PT) symmetric phase in coupled two waveguides with a Kerr-type medium in between. Paying attention to the emitted field from a dipole source inside, we show that when the strength of the dipole increases, the optical Kerr effect can render a phase transition from the exact PT phase to the broken PT phase. Furthermore, a salient phenomenon of bistable-like PT phase is observed, in which the emitted field possesses a paradox between the two kinds of PT phases. We show that the physical mechanism of this
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