Abstract: An electro-optic switching device, namely an optical phased array (OPA) or a reprogrammable optical phased array (ROPA), that can accommodate high switching speeds, reduced losses and increased efficiency while being adapted to operate at various wavelengths using suitably low activation voltages is presented. The ROPA designs presented herein are generally comprised of an electro-optic (EO) crystal electrically mounted to a high-voltage CMOS chip activated to apply an array of activation voltages across the crystal and induce a refractive index profile therein, such profile adaptable to selectively control and manipulate an optical beam interacting with the device.