A twisted waveguide configured for elliptical polarization transformation, and systems for utilizing the same

Abstract

The invention relates to a method for creating a twisted waveguide capable of exhibiting elliptical birefringence, the method comprising: for a given light frequency f and cross-section of a waveguide described by a permittivity profile ε(X, Y) calculating a linear birefringence λ, thereby to determine and apply parameters L, θ, and a twist rate θ/L that satisfy a condition that the twisted waveguide's twist rate is of a same order of magnitude as a linear birefringence rate occurred when assuming that the waveguide is untwisted; where f is the frequency of light, ε(X, Y) is permittivity along X-Y axes of the twisted waveguide at the frequency f, respectively, L is the waveguide's length, and θ is a twist angle of the waveguide.

Dependencies are inferred from the claim text.