@article{oai:muroran-it.repo.nii.ac.jp:00010327, author = {河村, 真吾 and KAWAMURA, Shingo and TSUJI, Yasuhide and 辻, 寧英 and 張, 沢君 and ZHANG, Zejun}, issue = {4}, journal = {JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS}, month = {}, note = {application/pdf, We propose and design a tapered polarization splitter (PS) using the single-polarization property of an elliptical-hole core circular-hole holey fiber (EC-CHF). It is reported that polarization splitting without any crosstalk is enabled using the PS with EC-CHF. In this paper, we show that the mode coupling is enhanced with a tapered PS structure, and the full waveguide separation at the input and output ends can be simultaneously realized. We also propose a full-vectorial finite element beam propagation method using coordinate transformation to efficiently analyze a waveguide whose structure varies along the longitudinal direction. In this approach, computational accuracy and efficiency are greatly improved. (C) 2020 Optical Society of America}, pages = {1075--1082}, title = {Design of tapered polarization splitter based on EC-CHFs by full-vectorial FE-BPM using coordinate transformation}, volume = {37}, year = {2020}, yomi = {カワムラ, シンゴ and ツジ, ヤスヒデ} }