| 摘要 |
PURPOSE:To enable the reliability of a switch to be raised without depending on the scale of the switch by converting the aimed address of a information signal to plural light signals of which wavelength are different, superimposing it to the information signal as a light header signal and passing it through the switch. CONSTITUTION:An optical branching circuit 10 outputs the light information signal being equal to the inputted light information signal to an optical multiplexing circuit 12 and a header addition circuit 14. The light information signal outputted by the circuit 10 and a header signal outputted by the circuit 14 are sent to the input terminal 150 or 250 of the 2X2 light switch element constituting the 8X8 switch 500 as a light packet signal after being superimposed by the circuit 12. The circuit 14 converts the aimed address information and timing information to the light header signal constituted by the difference wave length and outputs it to the circuit 12. |
