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Dual Micro-Ring Resonators with Angular Phase-Change Modulation for Photonic Nonlinear Activation

An all-optical neuromorphic device in which two silicon microring resonators carry angularly-positioned segments of the phase-change material GST; switching the GST between amorphous and crystalline states reshapes the rings' transmission to realize a tunable nonlinear activation function with two resonant wavelengths, narrow bandwidth and high switching contrast.

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Dual Micro-Ring Resonators with Angular GST Modulation: Enabling Ultra-Fast Nonlinear Activation

Neuromorphic photonics implements neural computation with light, and a key building block is an all-optical nonlinear activation function (NLAF). This paper proposes a device made of two silicon micr…