Patent ID: 6763159
Filing Date: 2004-07-13
Classification: G02F

Abstract:
A waveguide type liquid crystal optical switch in which optical waveguide formed by cores, comprising:a pair of a first core and a second core, in which light is input from one of the first core and the second core and an optical path is switched between the first and second cores, and the first core and the second core being provided so as to form a space therebetween; a third core provided apart from the first core and the second core at predetermined distances, into which nematic liquid crystal orientated by an orientation film along a predetermined direction is filled, the third core overlapping to the space formed between the first core and the second core; a first electrode arranged on an opposite side of the first core and the second core with respect to the third core in such a manner that the first electrode is overlapped to the space between the first core and the second core; a second electrode and a third electrode, which are arranged on both sides of the first electrode so as to constitute a pair, and which cause liquid crystal molecules to be orientated along a direction perpendicular to the orientation direction of the orientation film; and a cladding for incorporating the first core, the second core, the third core, and the first to third electrodes.