Patent ID: 6456767
Filing Date: 2002-09-24
Classification: G02B

Abstract:
An optical waveguide transmitter-receiver module, comprising:a first substrate, in the flat surface of which is formed a first groove to accommodate a protrusion, and in the flat surface of which a first positioning mark is formed; a second substrate, having thickness equal to the thickness of said first substrate, in the flat surface of which are formed a second groove to accommodate a protrusion and a third groove to accommodate an optical fiber, and in the flat surface of which a second positioning mark is formed; a light emitting element, positioned and fixed in place on the surface of either said first substrate or said second substrate; a photo-receiving element which, when the module specifications call for operation simultaneously with said light emitting element, is positioned and fixed in place on the surface of either said first substrate or said second substrate, differing from the substrate on which the light emitting element is fixed in place, and which, when the module specifications call for operation at times differing from the times of operation of said light emitting element, is positioned and fixed in place on either of said substrates; and, a third substrate, wherein a protruding part is formed on the back surface thereof, at a position facing said first and second grooves, entry end faces and exit end faces of an optical waveguide are formed at positions in the side faces thereof facing the end part of said third groove, the emitting part of said light emitting element, and the receiving part of said photo-receiving element, and part of said back surface thereof is fixed in place on parts of the surfaces of said first and second substrates, being positioned with reference to said first and second marks.