Patent ID: 7239773
Filing Date: 2007-07-03
Classification: G02B,H04Q

Abstract:
1. An optical-switch testing apparatus that includes a plurality of input ports and output ports, and carries out a test on optical characteristics of an optical switch that deflects a light path for switching optical signals between an input port and an output port corresponding to an arbitrary pass, the optical-switch testing apparatus comprising: a light source that inputs an optical signal for the test to each of the input ports; a light detector that detects a light receiving level of the optical signal output from each of the output ports; and a control unit that, whenever the optical signal is switched, changes a deflection status of the light path to obtain an optimal point at which the light receiving level is maximum, and calculates a parameter to optimize the deflection status based on the optimal point, wherein: the optical switch further comprises: the control unit calculates deflection control amounts for changing angles of the first and the second tilt mirrors in order to form light paths between the input port and the output port selected when the optical signal is switched, and supplies the deflection control amounts to the first deflecting unit and the second deflecting unit, respectively; and further comprises: a deflection-control-amount changing unit that changes the deflection control amounts, and supplies the changed deflection control amounts to the first deflecting unit and the second deflecting unit, respectively;