Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tetsuya Sakai and Shunichiro Hirafune and Hideaki Murayama and Koji Omichi and Hirotaka Igawa and Akira Sakamoto,Biaxial measurement of optical frequency domain reflectometry using polarization maintaining fiber Bragg grating,SPIE Proceedings,0277-786X,SPIE,2008-04-14,7004,,70042A,https://cir.nii.ac.jp/crid/1873398392805279104,https://doi.org/10.1117/12.785953