  We study the interaction among gravitational and electromagnetic plane waves
by means of an analogue electromagnetic model of gravity, where the
gravitational properties are encoded in the electromagnetic properties of a
material in flat space-time. In this setup, the variations in the metric tensor
produced by the gravitational waves are codified as space-time-varying
electromagnetic properties. We used an in-housed code based in the
finite-difference time domain method to conduct numerical experiments, where we
found that, when a monochromatic gravitational plane wave interacts with a
narrow-band electromagnetic plane wave, an infinite number of sidebands,
equally separated between themselves, are induced by the gravitational wave.
Finally, we discuss possible future applications of this effect as an
alternative method to directly detect gravitational waves.

General Relativity and Quantum Cosmology;High Energy Astrophysical Phenomena;High Energy Physics - Theory