Compact 2×2 parabolic multimode interference thermo–optic switches based on fluorinated photopolymer
Wang Ji-Hou1, Chen Chang-Ming1, Hu Ke-Wei1, Cheng Ru1, Wang Chun-Xue1, Yi Yun-Ji1, Sun Xiao-Qiang1, Wang Fei1, Li Zhi-Yong2, Zhang Da-Ming1, †
       

(a) Experimental setup for measuring DSPS MMI TO waveguide switch; (b) switch response of dual-size parabolic structural MMI TO waveguide switches; (c) actual curves of output optical power versus driving electric power for cross and bar states of the DSPS MMI TO waveguide switch at 1550 nm; (d) curve of insertion loss varying with temperature.