High Speed Optical Switch Based on Photonic Crystal Resonator

In this paper, the 2×2 optical switch is designed by photonic crystal platform. The silicon (Si) and Ge₂Sb₂Te₅ (GST) materials are utilize to design the nano-switch. The proposed device switching operation is based on various GST states. The photonic bandgap of the nanodevice is estimated by the plane wave expansion method. The optical switch functional parameters such as data rate, extinction ratio and losses are estimated by finite-difference-time-domain method. The designed ultracompact switch (135.28 μm²) can be suitable for optical signal processing systems and high-speed network.