@article{oai:muroran-it.repo.nii.ac.jp:00010406,
 author = {TOMIOKA, Shun and IGUCHI, Akito and 井口, 亜希人 and TSUJI,  Yasuhide and 辻, 寧英},
 journal = {OPTICS COMMUNICATIONS},
 month = {},
 note = {application/pdf, So far, as an optimal design method for 2D and 3D design of optical waveguide devices, topology optimization based on a function expansion method has been reported. In this paper, we improve the conventional functionexpansion-based topology optimization method to design three-dimensional photonic devices with structural variation in the depth direction. In order to design realistic 3D optical waveguide devices, we consider a layered structure and design each layer by using function-expansion-based topology optimization method. In this approach, undesired floating structures are avoided and layer thickness can be optimized. The validity of this method is verified through design examples of a polarization splitter and rotator (PSR) and a crossing waveguide which have two-layer structure.},
 title = {Function-expansion-based topology optimization of three-dimensional optical waveguide devices with multi-layered structure considering layer thickness},
 volume = {474},
 year = {2020},
 yomi = {イグチ, アキト and ツジ, ヤスヒデ}
}