(a) Schematic of memory structure based on micro-ring resonator. (b) Cross-sectional schematic of the memory. (c) Microscopic photo of the memory. (d) Optical spectrum of the memory in two states. (e) Optical hysteresis loops of the memory.
(a-c) Writing using both electrical and optical signals. Then, reading using optical signals. (d-f) Writing using both electrical and optical signals. Then, reading using electrical signals.