An improved optical switch having a first optical fiber and a plurality of N optical fibers. The first optical fiber forms an optical path with any one of the N optical fibers by an alignment of a longitudinal axis of an end of the first optical fiber with a longitudinal axis of an end of the one...http://www.google.se/patents/US5815614?utm_source=gb-gplus-sharePatent US5815614 - 1 X N electromechanical optical switch
