Photonics Research, 2020, 8 (5): 05000737, Published Online: Apr. 26, 2020
Enhanced nonlinear instabilities in photonic circuits with exceptional point degeneracies Download: 530次
Abstract
We propose a conceptual design of optical power limiters with abrupt limiting action and enhanced power-handling capabilities that is based on exceptional point degeneracies (EPDs). The photonic circuit consists of two coupled cavities with differential factors. One of the cavities includes a Kerr-like nonlinear material. The underlying mechanism that triggers an abrupt transmittance suppression relies on the interplay between a nonlinear instability and an abrupt destruction of EPDs due to a resonance detuning occurring when the incident power exceeds a critical value. Our proposal opens up possibilities for the use of EPDs in optical power switching, switching, routing, and so on.
Suwun Suwunnarat, Rodion Kononchuk, Andrey Chabanov, Ilya Vitebskiy, Nicholaos I. Limberopoulos, Tsampikos Kottos. Enhanced nonlinear instabilities in photonic circuits with exceptional point degeneracies[J]. Photonics Research, 2020, 8(5): 05000737.