@article{oai:kitami-it.repo.nii.ac.jp:00007246, author = {Tsuji, Yasuhide and Hirayama, Koichi and Nomura, Tsuyoshi and Sato, Kazuo and Nishiwaki, Shinji}, issue = {7}, journal = {IEEE Photonics Technology Letters}, month = {Apr}, note = {We apply a design method based on topology optimization technique to optical waveguide devices. In our approach, after a refractive index profile in a design region is automatically generated using a topology optimization method, the obtained structure is redefined using primitive geometries with some design parameters and those parameters are optimized by a sequential linear programming. As numerical examples, we demonstrate how the method can be used for 90 bends and T-branching waveguides with arbitrary splitting ratio., application/pdf}, pages = {850--852}, title = {Design of Optical Circuit Devices Based on Topology Optimization}, volume = {18}, year = {2006} }