Inverse-designed CWDM demultiplexer operated in O-band. - Alfred K. C. Cheung; Krishna Gadepalli; Jian Guan; Andreas Hoenselaar; Yang Meng; Anton Menshov; Jan Petykiewicz; Xavier Serey; Rhett Stucki; Lieven Verslegers; Jiahui Wang; Phil Watson; et al. (OFC, 2024)