@article{oai:muroran-it.repo.nii.ac.jp:00010219, author = {張, 沢君 and ZHANG, Zejun and TSUJI, Yasuhide and 辻, 寧英 and EGUCHI, Masashi and 江口, 真史 and 陳, 春平 and CHEN, Chun-ping}, issue = {10}, journal = {Journal of the Optical Society of America B}, month = {}, note = {application/pdf, In this paper, we propose a novel polarization converter (PC) based on a photonic crystal fiber (PCF) with an anisotropic square lattice core consisting of circular air holes. Utilizing the core symmetry oriented at a 45-degree to the principal axes, an incident polarized light beam can be completely rotated 90 deg. Simulation results by using a vectorial finite element beam propagation method show that the polarization conversion is achieved at a device length of 119 μm. Additionally, an improved PC element that can provide a high-consistent Gaussian-like mode distribution to decrease the splice loss with conventional fibers has also been studied. The polarization conversion efficiency is better than 99% and the corresponding extinction ratio is better than -20  dB over a wavelength range of 310 nm.}, pages = {2227--2232}, title = {Design of polarization converter based on photonic crystal fiber with anisotropic lattice core consisting of circular holes}, volume = {34}, year = {2017}, yomi = {ツジ, ヤスヒデ and エグチ, マサシ} }