Abstract: A photonic switch matrix is disclosed. The photonic switch matrix includes a first pair of power splitters, each power splitter including one input and two output ports and a second pair of power splitters, each power splitter including two input ports and one output port. The photonic switch matrix further includes four optical fibers doped with gain controllable substances under light pumping, the four optical fibers connecting the first pair and the second pair of power splitters, wherein each input port of the second pair of power splitters is connected to an output port of the first pair of power splitters. The photonic switch matrix further includes four multiplexers, each multiplexer coupled with one of the four optical fibers, and at least one light pump connected to each multiplexer, wherein light pumped into a multiplexer defines an optical path of the photonic switch matrix.