A concatenated modified plus-minus 2i (CMPM2I) photonic switching network

In this paper, we present a new photonic switching network. The proposed network is constructed by concatenating modified plus-minus 2ⁱ and inverse modified plus-minus 2ⁱ networks with two center stage overlapped. The performance is evaluated and compared with other networks to show the superiority of the proposed network over other networks. To construct the proposed network we require less number of switching elements. The proposed network yields less signal loss and first-order crosstalk, thus it scales well. The proposed network is a good choice for constructing photonic switch with low signal loss and cross talk.