| 摘要 |
PURPOSE:To eliminate the necessity of electrical and magnetic shielding and reduce the weight and size of an optical memory, by constituting the optical memory with optical fibers and optical devices only. CONSTITUTION:An optical switch 1 of 2X2 matrix has input side terminals 2 and 3 and output side terminals 4 and 5. The optical switch 1 is of a waveguide type utilizing an electrooptic effect and, when a change-over switch 6 is turned on and a voltage V is applied across the electrodes between the waveguides, becomes a crossed state. When the switch 6 is turned off and the voltage V is not applied, the optical switch 1 is switched to a through state one. A bus cable 7 is connected with the input side terminal 2 (terminal for writing signal) of the optical switch 1 and, at the same time, another bus cable 8 is connected with the output side terminal 4 (terminal for reading out signal). Moreover, an input side terminal 9 for storing signal is connected between the input terminal 3 and output terminal 5 of the optical switch 1 in the form of a loop. |
