Energy-Efficient Non-volatile Si Optical Phase Shifter using Charge-Trap Flash MOS Stack with Graphene Electrode. - Gijun Ju; Kyunghwan Kim; Sunghyun Hwang; Kyul Ko; Yujeong Kang; Dae-Hwan Ahn; Donghee Park; In-Ho Lee; Yong-Won Song; Younghyun Kim; Jae-Hoon Han (OFC, 2026)