Patent ID: 8125701
Filing Date: 2012-02-28
Classification: G02B,H04Q

Abstract:
1. An optical switch comprising: at least one input port which inputs input light; at least one output port which outputs output light; a mirror array including a plurality of mirror devices, wherein said plurality of mirror devices each includes a pivotally supported mirror and electrodes opposite the mirror, said mirror and electrodes being arranged so that driving voltages applied to the electrodes act to cause the mirror to tilt to a predetermined angle; a look-up table which records, in correspondence with each combination of said input port and said output port, the driving voltages to tilt the mirror to a pivot angle at which the input light from said one input port is deflected and output from said one output port; a driving unit for selectively outputting, from an arbitrary one of said at least one output port, the input light input to a predetermined one of said at least one input port by supplying the driving voltages to said mirror device obtained from said look-up table; detection unit for detecting the driving voltages of the mirror at which power of the output light is optimized; and a correction unit that corrects, based on the driving voltages actually detected by said detection unit, the driving voltages recorded in said look-up table, wherein said correction unit corrects the driving voltages of a mirror device other than at least two mirror devices to which optimum driving voltages have been detected, on the basis of a geometrical positional relationship, within said mirror array, of said at least two mirror devices to said other mirror device.