Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Takaaki Ishigure and Eisuke Nihei and Yasuhiro Koike,High bandwidth (2 GHz km) large core (0.5-1.0 mm) GI polymer optical fiber,Proceedings of LEOS '93,,IEEE,2002-12-30,,,349-350,https://cir.nii.ac.jp/crid/1873116917862296576,https://doi.org/10.1109/leos.1993.379203