| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical waveguide device with reduced the polarization dependency of the optical characteristic by the stress added to the core part of the optical guide path, and simplified in its structure and manufacturing process. SOLUTION: In an array waveguide diffraction grating type optical composer and divider 1 that is one example of the optical circuit by this waveguide device, an array waveguide part 14 is divided into a first array part 14a having each channel waveguide formed with a core width W and a second array pat 14b having each channel waveguide formed with a core width W2 different from W1. The respective core part shapes (core widths W1 and W2) of the two array parts 14a and 14b and the dividing area of each array part are properly set, whereby the polarization dependency by structure in the array waveguide part 14 can be set, particularly so as to compensate or reduce the polarization dependency by stress. |
