Patent ID: 7046868
Filing Date: 2006-05-16
Classification: G02B

Abstract:
1. An optical waveguide transmitter-receiver module, comprising: a first substrate having a first positioning mark on a top surface side thereof; a second substrate having a second positioning mark on a top surface side thereof; a third substrate having an optical waveguide formed therein, optical waveguide entry and exit end faces and a third positioning mark on a bottom surface side thereof; wherein protruding portions, which are formed on both top surfaces of said first and second substrates or a bottom surface of said third substrate, have a flat top or bottom surface, respectively, for bonding with said bottom surface of said third substrate or said both top surfaces of said first and second substrates; said both top surfaces of said first and second substrates or said bottom surface of said third substrate is flat for bonding with said flat top or bottom surface of said protruding portions; each of said first and second substrates and said third substrate are positioned together with reference to said first and second positioning marks and said third positioning mark, and bonded to each other at said flat top or bottom surface of said protruding portions so as to form at least one gap between each of said first and second substrates and said third substrate; a guide protruding portion formed on said bottom surface of said third substrate; and a guide depression formed on said top surface of said first or second substrate; wherein said guide protruding portion is arranged at a position, which is different from a facing position to said protruding portions, and in a crossing direction with said protruding portions; and said guide depression is arranged to opposing said guide protruding portion.