A novel, flexibly scalable optical separated Crossbar network configuration is proposed. Optical sub system is physically implemented. We present experimental results of the optical sub system. Network configuration of separated Crossbar employs the SEED devices as high speed optical modulators and the FET SEED device integrated on a single GaAs chip as optical logic array. This configuration solves the problem that a Crossbar is hardly scalable by employing flexible code rule and one, two or four FET SEED chips to provide scalable optical channel receivers. But the size of the separated Crossbar is limited within 32×32. This network configuration is especially promising in network computing application based on distributed computers. And it is competitive in realization of Cross connect matrix of SDH Cross connect system.