Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) H. Ke and K.S. Chiang and J.H. Peng,Analysis of phase-shifted long-period fiber gratings,IEEE Photonics Technology Letters,1041-1135,Institute of Electrical and Electronics Engineers (IEEE),1998-11,10,11,1596-1598,https://cir.nii.ac.jp/crid/1363670320157793920,https://doi.org/10.1109/68.726761