The 650-nm variable optical attenuator based on polymer/silica hybrid waveguide
Yu Yue-Yang1, Sun Xiao-Qiang1, 2, †, 
, Ji Lan-Ting1, He Guo-Bing1, Wang Xi-Bin1, 2, Yi Yun-Ji1, 2, Chen Chang-Ming1, 2, Wang Fei1, 2, Zhang Da-Ming1, 2
, Ji Lan-Ting1, He Guo-Bing1, Wang Xi-Bin1, 2, Yi Yun-Ji1, 2, Chen Chang-Ming1, 2, Wang Fei1, 2, Zhang Da-Ming1, 2 Optical insertion loss with the variation of MMI coupler length.
