| 摘要 |
PROBLEM TO BE SOLVED: To realize the optical matrix switch of a rearranging type and a no sealing type with reduced number of optical switch stages by providing the switch of 1×m type for an input and output port to provide structure, provided with m-number of N×N type switches for a central stage. SOLUTION: In an optical matrix switch 20 at the time of setting (m) to be 2 and N to be 8, the central stage 22 consisting of two 8×8 switches is provided with non-plugging two switches to 8/2 inputted light to allow the switches 3a and 3d of an input port 2a to select a non-plugging switch 21 at the central stage, where the number of inputted light has yet reached 8/2 to be the plugging of rearrangement. At this time, the combination of the path of optical signals inputted to a central stage optical switch is set lest the light is simultaneously inputted to the first state optical switch 21a of the central state optical switch and lest light is simultaneously inputted to a rear stage 21b. Thereby, maximally only the light of N/m is inputted to a central stage switch 21 so as to freely send out light to N-number of output ports 2b until the light of N/m. |
