Integrated liquid crystal optical switch based on double teeth-shaped structure at telecom wavelengths

摘要

The characteristics of a double teeth-shaped plasmonic optical switch are analyzed. Based on the metal-insulator-metal waveguide consisting of double rectangular teeth, a nanoscale liquid crystal optical switch is proposed and numerically simulated by using the finite difference time domain method with a perfectly matched layer absorbing boundary condition. It is found that the double teeth-shaped structure filled with liquid crystal can realize the function of a switch. The modulation depth of the double teeth-shaped structure is larger than 50 dB.