METHOD FOR PREPARING OPTICAL CIRCUIT BOARD

摘要

PURPOSE: A manufacturing method of an optical circuit board is provided to improve optical contact efficient in comparison with an optical waveguide having a contact part of a square shape by convexly forming the contact part of the optical waveguide contacted with a light source. CONSTITUTION: A pattern groove for forming an optical waveguide is formed on a first surface of a top part of a copper foil(30). A first clad(31) is coated on a part or a whole part of the first surface of the copper foil. A core(33) of the optical waveguide is formed by filling a core material(32) inside the pattern groove formed in the copper foil. The core is formed by removing the core material remaining on a surface of the copper foil except for the pattern. A second clad(34) is formed on the core. An electrode pattern(35) is formed on a second surface of the copper foil by partially removing the second surface of the copper foil. Thickness of the electrode is reduce by half-etching the copper foil.