| 摘要 |
<p>An optical switch (20) is disclosed which comprises a plurality of input ports and output ports, and which establishes a path between the input ports and output ports. Interception means (13) are provided which intercept an optical signal inputted to the optical switch during a path switchover. Alternatively, a controller (40) of the optical switch controls input movable mirrors (24), during the path switchover, so as to prevent optical signals deflected by movable mirrors from being outputted to all of the output ports except an output port for a new path establishment, e.g. during a path switchover, so that optical signals reflected by the input movable mirrors may not be entered into other output movable mirrors except an output movable mirror necessary for a new path establishment. Alternatively, the output movable mirrors (25) of the optical switch are separated into a plurality of areas, and are arranged in each area so that the path switchover between two output movable mirrors is performed without the optical signal crossing other output movable mirrors.</p> |
