Execution form of this invention is directed to the optical fabric of delay low with high zone in order to broadcast between the nodes. The optical fabric is connected by optical system to the broadcast node in one execution form and one or the optical communication route which is connected to optical system to the plural broadcast reception nodes (508) possesses. In addition as for the optical fabric, it is connected by optical system to optical communication route and in order to broadcast the light information which is formed and by the broadcast node to optical communication sutra road surface, the 1st optical element which is formed (616 and 617) with, to optical communication route it is connected by optical system and in order and one or the plural reception nodes respectively to direct the course of portion of the broadcast light information, one which is formed or the plural optical elements (the 612 615) with it possesses. Selective figure Figure 4
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