@article{weko_10535_1,
   author	 = "Iguchi,Akito and Morimoto,Keita and Tsuji,Yasuhide",
   title	 = "Bidirectional Beam Propagation Method Based on Axi-Symmetric Full-Vectorial Finite Element Method",
   journal	 = "IEEE PHOTONICS TECHNOLOGY LETTERS",
   year 	 = "2021",
   volume	 = "33",
   number	 = "14",
   pages	 = "707--710"
}