THREE-DIMENSIONAL PLATE-SHAPED OPTICAL WAVEGUIDE

PROBLEM TO BE SOLVED: To provide a three-dimensional plate-shaped optical waveguide in which even when an optical waveguide is a high-density and multi branching plate-shaped optical waveguide, it can be miniaturized and moreover strength, such as impact resistance is also improved. SOLUTION: In the three-dimensional optical waveguide, a plate-shaped optical waveguide block 2 is constituted by stacking plate-shaped optical waveguides 1a to 1d, another plate-shape optical waveguide 3 is coupled to the plate-shaped optical waveguide 2 by being made to intersect the bolck 2 at 90 degrees, coupling end faces of respective plate-shaped optical waveguides 1a to 1d constituting the block 2 are ground while being slanted by a prescribed angle and a distance among cores of respective plate-shaped optical waveguides 1a to 1d and a distance among cores of the plate-shaped optical waveguide 3 are made to become an equal distance. COPYRIGHT: (C)2005,JPO&NCIPI