The optical networks need to carry out all the switching and routing in optical domain to avoid the bottleneck imposed by the optoelectronic conversions. Optical switching is an essential element in the optical networks, in particular; the switches architecture. The crossbar switch architecture is presented as proposed switch architecture based on symmetric Mach-Zehnder (SMZ) interferometer configuration as switching elements(SEs). The numerical results for SMZ shows the complete switching of the input power to the desired output port.