Optical diode based on the one-way light-speed anisotropy

TL;DR

This paper demonstrates that a triangular Fabry-Perot resonator filled with a parity-odd anisotropic medium can function as an optical diode by exploiting one-way light speed anisotropy, with potential applications in photonics.

Contribution

It introduces a novel optical diode design using a parity-odd anisotropic medium exhibiting one-way light speed anisotropy, including both linear and non-linear media.

Findings

Triangular resonator acts as a perfect optical diode.

Parity-odd anisotropic media exhibit one-way light speed anisotropy.

Liquid crystals can be used to realize the effect.

Abstract

We report that a triangular Fabry-Perot resonator filled with a parity-odd linear anisotropic medium exhibiting the one-way light speed anisotropy acts as a perfect diode. A Linear crystal such as the nematic liquid crystals whose molecular structures break parity can exhibit the one-way light speed anisotropy. The one-way light speed anisotropy also can be induced in a non-linear medium in the presence of constant electric and magnetic field strengths.