Nonlinear Fano resonance in photonic crystal waveguide and cavity system: physical properties and applications

Yi Xu; Andrey E. Miroshnichenko

doi:10.1117/12.2070974

13 November 2014 Nonlinear Fano resonance in photonic crystal waveguide and cavity system: physical properties and applications

Yi Xu, Andrey E. Miroshnichenko

Author Affiliations +

Proceedings Volume 9277, Nanophotonics and Micro/Nano Optics II; 92770N (2014) https://doi.org/10.1117/12.2070974
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

We show that the photonic crystal waveguide and cavity system could be a superior platform to observe and manipulate nonlinear Fano resonance. Using a modified Fano-Anderson model, we can study the nonlinear dynamics in this system. By adding a scattering channel as a continuum to this system, there are bound states in the continuum in such photonic system. We can therefore obtain the tunable interaction of Fano resonances in the Mach-Zehnder-Fano interferometers by exciting the bound state like mode. The nonlinear version of Mach-Zehnder-Fano interferometers can be used to enhance the nonlinear response which facilitates the reduction of optical switching power. In contrast, by adding a scattering channel as a discrete state to this system, we can shape the asymmetry nonlinear transmission of the system. Furthermore, the nonreciprocity of the photonic system can be manipulated dynamically. The unidirectional transmission can be managed by the properties of the input signal, resembling an optical diode with reconfigurable forward direction and transmission contrast. We also address the possibility to control the properties of the nonreciprocity by using a pump pulse, providing a chance to control the system in an all-optical manner.

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Yi Xu and Andrey E. Miroshnichenko "Nonlinear Fano resonance in photonic crystal waveguide and cavity system: physical properties and applications", Proc. SPIE 9277, Nanophotonics and Micro/Nano Optics II, 92770N (13 November 2014); https://doi.org/10.1117/12.2070974

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KEYWORDS

Complex systems

Photonic crystals

Scattering

Waveguides

Control systems

Finite-difference time-domain method

Nonlinear response

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