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)

Forward and backward transmission spectra of the proposed PhC structure with incidence of even mode. The inset shows the electric field profiles with input light at frequency 0.3930 c / a .