It might tame some time to make a digital optical switch with Matlab on your own, but it is not that hard. You just need to learn about optisystem electrical, optical and binary structures first. Use optisystem tutorials and videos on youtube for the start. Then all that remains is just a simple matlab program that first checks the drive bit value. Then according to the logical value of the bit, it decides the two outputs for the next N samples (when N is the number of samples corresponding to the duration of one bit in the drive bit sequence).