In this paper, an all-optical 1×2 high contrast ratio (CR) switch based on the symmetric Mach-Zehnder (SMZ) interferometers is presented. Simulation results show a remarkable improvement of the inter-output CR (~25 dB) between the two outputs compared with an existing SMZ switch. It is shown that the proposed switch offers high values of inter-output CR (> 32dB) over a wide range of input powers using appropriate power of the control pulses. The proposed switch can also support broadcast and drop switching modes when using together with an additional XOR gate.
|The Mediterranean Journal of Electronics and Communications
|Published - 2010