The spatial switching and control of a switching network of optical signals a frequencies

摘要

P the switching system serves to the spatial switching of modulating the carrier frequencies of the optical information. In the system, the selectors are the elements of the deviation of the light of the holographic optical network type. Each selector is associated with an input receiving an incident light wave and each holographic optical grating deflects in a direction of the order of which is not zero, the incident wave to an output 2. The recordings of the holographic optical networks are controlled by a control unit. / p & & p & in the direction of the order of 0 of each selector, is disposed a photodetector, the output signals of which define the on state or not of the input and are transmitted to said control unit. A station of the subscriber is also defined. / p & & p & which can be used in the multiservice switching networks. / p