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 transmission spectra of the proposed PhC structures with modified radii of the specific rods in the L2 cavity region, where r denotes the radius of the rods inside the red box.