| 摘要 |
The invention concerns a switch for optical beams comprising a series of optical input channels ( 110 . . . 150 ) and a series of optical output channels ( 410 . . . 450 ), two liquid crystal cells respectively adapted to deflect an optical beam coming out of an input channel ( 110 . . . 150 ) or arriving onto an output channel ( 410 . . . 450 ), said two cells comprising each a series of electrodes adapted to orient liquid crystals when one such electrode is subjected to a supply voltage said electrodes being distributed in zones ( 210 . . . 250, 310 . . . 350 ), each zone corresponding to a single input channel ( 110 . . . 150 ) or a single output channel ( 410 . . . 450 ), the switch further comprising means for supplying the electrodes with selected voltages. The invention is characterised in that it comprises a series of separate electronic circuits, each being connected to at least a different zone ( 210 . . . 250 ) of a given cell, said circuits being each capable of transforming a respective control signal indicating a channel to be coupled to the channel of said zone ( 210 . . . 250, 310 . . . 350 ) into a series of supply voltages for the electrodes of the zone ( 210 . . . 250, 310 . . . 350 ). |
