| 摘要 |
KxK optical switch unit according to the present invention is comprised of input ports 1-1, . . . 1-36, 1xM optical matrix switches 5-1-1, . . . 5-4-9 connected with the input ports 1-1, . . . 1-36, NxN optical matrix switches 7-1-1, . . . 7-4-2, and 10-1-1, . . . 10-4-2 connected with the 1xM optical matrix switches 5-11, . . . 5-4-9, an Mx1 optical matrix switches 13-1-1, . . . 13-4-9 connected with the NxN optical matrix switches 7-1-1, . . . 7-4-2, and 10-1-1, . . . 10-4.2, and output ports 2-1, . . . 2-36 connected with the Mx1 optical matrix switches 13-1-1 . . . 13-4-9, where K=MxN, M and N are integers more than 1.
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