Patent ID: 9609401
Date: 2017-03-28
CPC Classifications: H04J,H04Q

Claim:
1. An optical switch, comprising: a unit optical switch inputting n optical signals and outputting n optical signals; an optical splitter inputting a single optical signal, splitting the single optical signal into k optical signals, and outputting the k optical signals; and an optical selector inputting m optical signals and outputting a single optical signal, wherein the optical splitter comprises m×n pieces, the unit optical switch comprises m×k pieces, the optical selector comprises n×k pieces, (k×(m×n)) outputs of the optical splitter correspond to (n×(m×k)) inputs of the unit optical switch, (n×(m×k)) outputs of the unit optical switch correspond to (m×(n×k)) inputs of the optical selector, and (n×m) optical signals inputted into the optical splitter are output through the (m×k) unit optical switch from the optical selector as (n×k) optical signals, wherein n represents a natural number more than one, and m and k represent natural numbers, and wherein the unit optical switch is configured to connect switching elements in multiple-stage, and each of the switching elements performs a switching operation by splitting input light into two light beams and selecting split light beams.