Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sueta Tadasi,2. Fundamentals of Optical Communications,The Journal of the Institute of Television Engineers of Japan,03866831,The Institute of Image Information and Television Engineers,1978,32,4,269-276,https://cir.nii.ac.jp/crid/1390282680073980544,https://doi.org/10.3169/itej1978.32.269