All-Optical Phase-Change Memory with Improved Performance by Plasmonic Effect

The combination of the integrated waveguide and phase-change materials (PCMs) provides a promising platform for reconfigurable multifunctional photoelectric devices. Through plasmonic enhancement low loss propagation waveguide, footprint power consumption device can be effectively improved. In this work, metal double-ring structure embedded with phase change was proposed to utilize effect light-matter interaction. particular, overall temperature difference in PCM cell confined within 2 °C during crystallization process, thus avoiding interior heterogeneous crystallization. insertion amorphous crystalline states at wavelength 1550 nm are 2.3 dB 1.0 dB, respectively. A signal contrast ratio 15.8% is achieved under ultra-small (50 × 90 nm2) nm.