Realizing mode conversion and optical diode effect by coupling photonic crystal waveguides with cavity

Ye Han†,‡^a), Zhang Jin-Qian-Nan^a)‡, Yu Zhong-Yuan^a), Wang Dong-Lin^b), Chen Zhi-Hui^c)

Electric field profiles with input light at frequency 0.3930 c / a : (a) even mode and (b) odd mode excited at port 1; (c) even mode and (d) odd mode excited at port 2. The red arrow indicates the light propagation direction.