@article{oai:muroran-it.repo.nii.ac.jp:00009530,
 author = {安井, 崇 and YASUI, Takashi and TSUJI,  Yasuhide and 辻, 寧英 and SUGISAKA, Jun-ichiro and 杉坂, 純一郎 and 平山, 浩一 and HIRAYAMA, Koichi},
 issue = {23},
 journal = {Journal of Lightwave Technology},
 month = {Dec},
 note = {application/pdf, We extend topology optimization method with function-expansion-based refractive index distribution to optimization for three-dimensional optical circuits, in which a refractive index distribution in a design region is expressed by an expansion with some analytical functions. Three-branch optical waveguides have been optimized as numerical examples. Equally branching three-branch waveguides are achieved using our method. A limitation of topology optimization in two dimensions and dependency of initial structure are also shown.},
 pages = {3765--3770},
 title = {Design of Three-Dimensional Optical Circuit Devices by Using Topology Optimization Method with Function-Expansion-Based Refractive Index Distribution},
 volume = {31},
 year = {2013},
 yomi = {ヤスイ, タカシ and ツジ, ヤスヒデ and スギサカ, ジュンイチロウ and ヒラヤマ, コウイチ}
}