Characteristics of Guided-Mode Resonance Filter With Elliptically Polarized Incident Light

An intensity-tunable filter based on the guided-mode resonance effect that is tuned using elliptically polarized incident light is proposed in this paper. The resonant peak efficiency can be tuned over a range from 3% to 99.9% without shifting the resonant wavelength by varying the elliptical polarization states. The influence of three of the incident light parameters, comprising the angles of polarization, incidence, and azimuth, has also been investigated. The calculated results show that the light intensity can be adjusted by tuning of the polarization angle. By varying the angle of incidence, the dual-peak wavelengths can be divided into four peak wavelengths, and the distances between the separated-peak wavelengths can also be tuned. In addition, the azimuthal angle can be used to tune the reflection efficiencies of the resonant peaks and the distance that separates the peak wavelengths. Optical characterization showed excellent agreement between the experimental data and the theoretical results.