Metal-insulator-semiconductor devices based on surface plasmon polaritons

摘要: Apparatus and techniques are presented such as can be used for electro-optic modulation detection or other applications. For example, an optical metal grating is disposed on a thin film to couple light from broadside the surface plasmon-polariton waves; below located insulating layer doped semiconductor region forming metal-insulator-semiconductor structure. The device configured operate reflection transmission modulator, photodetector, example. Modulating voltage applied structure modulates carrier concentration in near layer, which refractive index of this region, thus modulating coupling efficiency plasmon-polaritons, reflectance transmittance device. Modulated incident produces modulated photocurrent under bias may detected using electronics.