| 摘要 |
An optical switch is provided for coupling light guides. A stepping motor (24) is rotated at a predetermined angular step so as to couple an optical fiber collimator (36) attached to its rotating shaft (24a) to one of a plurality of optical fiber collimators (271 - 2712) in response to a designation signal. The direction of the optical axis of the optical fiber collimator (36) is detected by a slit disk (30) attached to the rotating shaft (24a), and sensors (38, 39) are provided for detecting slit arrays (P1 - P6) formed in the slit disk (30). Detection signals from the sensors (38, 39) are used to determine whether the designation signal is carried out. <IMAGE> |
