Electro-optics is a branch of
electrical engineering and
material physics involving components, devices (e.g Lasers, LEDs, waveguides etc) and systems which operate by the propagation and interaction of light with various tailored materials. It is essentially the same, as what is popularly described today as photonics. It is not only concerned with the "Electro-Optic effect". Thus it concerns the interaction between the
electromagnetic (
optical) and the
electrical (
electronic) states of materials.