High-precision grating period measurement Photia, Thanarwut ; Temnuch, Wipawee ; Srisuphaphon, Sorakrai ; Tanasanchai, Nuttanan ; Anukool, Waranont ; Wongrach, Kunaree ; Manit, Pachara ; Chiangga, Surasak ; Deachapunya, Sarayut Abstract Publication: Applied Optics Pub Date: January 2019 DOI: 10.1364/AO.58.000270 Bibcode: 2019ApOpt..58..270P