Oscillating wave sensor based on the Goos–Hänchen effect

Instead of the evanescent field sensors, an oscillating wave sensor based on the Goos–Hänchen effect is proposed in this letter. It is demonstrated that as the intrinsic damping is well-matched with the radiative damping of the ultrahigh-order modes in a symmetrical metal-cladding waveguide with submillimeter scale, the enormously enhanced lateral beam shift results in a very high sensitivity of the sensor.