Patent ID: 7558448
Filing Date: 2009-07-07
Classification: G02B,H04Q

Abstract:
1. An optical switching system that switches optical paths between input ports and output ports by using a plurality of micro mirrors each of which has a reflecting surface whose angle is controllable, the optical switching system comprising: a connection information memory portion that stores connection information between the input ports and the output ports; a control characteristic memory portion that stores control characteristic data of the micro mirrors with respect to each of a plurality of temperatures; a temperature sensor that senses a temperature in the optical switching system; a temperature estimating portion that estimates a temperature of a member that constitutes the optical switching system based on the temperature sensed by the temperature sensor; a computing portion that refers to the control characteristic data stored in the control characteristic memory portion so as to calculate a controlled variable of the micro mirrors for controlling angles of the micro mirrors based on the connection information stored in the connection information memory portion and the temperature sensed by the temperature sensor; wherein the computing portion calculates the controlled variable of the micro mirror based on the temperature estimated by the temperature estimating portion.