Washington University

Mario Miscuglio

Volker J Sorger

Tarek El-Ghazawi

Armin Mehrabian

Multistate non-volatile photonic memory devices are disclosed. The photonic devices comprise phase change materials with broadband transparencies used to store discretized information with negligible losses in the 0 state. The photonic memories comprise multiple configurations for reading and writing multi-bit words. The reading mechanisms comprises schemes based on light-absorption (FIG.), shift in resonances of a cavity (ring resonator, photonic crystal; FIG.) or interferometric schemes (FIG.). The photonic memory devices employ multiple techniques for writing electrically (FIG.and related performance) and/or all-optically (FIGS.-). The optical writing can be performed with pulsed laser light coming either from free space or on-chip using dedicated writing lines and opportune drops.

Low loss multistate photonic memories

An accelerator for modern convolutional neural networks applies the Winograd filtering algorithm in a wavelength division multiplexing integrated photonics circuit modulated by a memristor-based analog memory unit.

Growing community of inventors

Silver Spring, MD, United States of America

Mario Miscuglio