Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Experimental and simulated results of an amplified electro-optical spatial switch using pre-emphasis techniques are presented. A symmetrical thin-film resistor replaces the typical 47 Omega resistor used to match the impedance between the device (3 Omega) and the transmission lines (50 Omega), allowing fast injection of pre-impulse and step currents in a semiconductor optical amplifier. This new construction reduces the parasitic elements from the mounting and enables the switch to achieve fast OFF-ON time (225 ps) and low overshoot (12%) with optimized pulse formats, reaching nearly Gaussian-response in electro-optical spatial switching.352280287CNPq [402184/2014-9, 150504/2015-2]INCT-Fotonicom [574017/2008-9]FAPESP [2014/18791-7]Padtec [2007/56024-4, 2015/50063-4]Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)