Abstract

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 ( $\text{3}\,\Omega$ ) and the transmission lines ( $\text{50}\,\Omega$ ), 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 ( $\text{225}\,\textrm {ps}$ ) and low overshoot ( $\text{12}\%$ ) with optimized pulse formats, reaching nearly Gaussian-response in electro-optical spatial switching.

© 2016 IEEE

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