adjective
or electro-optical
1.
a. : relating to or being a change in the refractive index of a material due to an electric field
electro-optic effect
b. : using or being a material that exhibits electro-optic properties
an electro-optic crystal
2. : relating to or being an electronic device for emitting, modulating, transmitting, or sensing light : optoelectronic herein