Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Taro Arakawa and Takahiro Toya and Motoki Ushigome,InGaAs/InAlAs five-layer asymmetric coupled quantum well exhibiting giant electrorefractive index change,Japanese journal of applied physics : JJAP,00214922,Tokyo : The Japan Society of Applied Physics,2011-03,50,3,032204,https://cir.nii.ac.jp/crid/1520290883004844544,https://doi.org/10.7567/jjap.50.032204