Enhanced nonlinear instabilities in photonic circuits with exceptional point degeneracies

• DOI: 10.1364/prj.385780
• Publication Date: 2020-03-13T13:00:15Z
• Authors: Suwun Suwunnarat; Rodion Kononchuk; Andrey Chabanov; Ilya Vitebskiy; Nicholaos I. Limb...; Tsampikos Kottos
• Keywords: Optical power; Limiting

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 two coupled cavities differential <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="m1"> <mml:mrow> <mml:mi>Q</mml:mi> </mml:mrow> </mml:math> factors. One the includes Kerr-like nonlinear material. underlying mechanism triggers an transmittance suppression relies interplay between instability destruction EPDs due to resonance detuning occurring when incident exceeds critical value. Our proposal opens up possibilities for use in switching, id="m2"> routing, so on.