Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) J. Ishihara and Koki Watanabe and Kiyotoshi Yasumoto,Coupled-Mode Analysis of a Gating-Assisted Directional Coupler Using Singular Perturbation Technique - Abstract *,Journal of Electromagnetic Waves and Applications,0920-5071,Informa UK Limited,1999-01-01,13,,1681-1682,https://cir.nii.ac.jp/crid/1872272492493014528,https://doi.org/10.1163/156939399x00114