OPTICAL WAVEGUIDE CIRCUIT

摘要

PURPOSE:To provide an optical waveguide circuit consisting of a plane waveguide and rectangular waveguide having excellent reproducibility with easy production. CONSTITUTION:This optical waveguide circuit consists of combination of the plane waveguide 5 formed within a clad on a substrate and the rectangular waveguides 1, 2 connected to the plane waveguide 5. The connecting parts of the plane waveguide 5 and the rectangular waveguides 1, 2 separate the plane waveguide 5 and the respective rectangular waveguides 1, 2 at spacings 29, 30 and the respective rectangular waveguides 2 are separated from each other at the spacings.