Patent ID: 9195052
Filing Date: 2015-11-24
Classification: B82Y,G01J,G02B,G02F,Y10S

Abstract:
1. An actively tunable polar-dielectric optical device, comprising: a waveguide having an active arm and an inactive arm, the waveguide being fabricated from a polar-dielectric material and, being configured to propagate a surface phonon polariton (SPhP) beam travelling along a surface thereof when the polar-dielectric material is exposed to an incident infrared optical beam having at least one wavelength within a Reststrahlen band of the polar-dielectric material; and a controllable source of charge carriers configured to controllably inject additional charge carriers directly into the active arm such that the active arm has a index of refraction n wherein an input SPhP beam entering the waveguide is split into beam SPhP wherein the phase Φ