作者：Yong Zhang, Danping Li, Cheng Zeng, Zengzhi Huang, Yi Wang, Qingzhong Huang, Ying Wu, Jinzhong Yu, and Jinsong Xia
摘要：An all-silicon passive optical diode based on optical nonlinearity in cascaded photonic crystal (PhC) L3 cavities is proposed and demonstrated. A nonreciprocal transmission ratio (NTR) of 30.8 dB and insertion loss of 8.3 dB are realized in the device. The device has a relatively broad 17 dB operation bandwidth of 0.08 nm, and at least 16 dB of NTR is achieved when input power varies betweenand. A nonlinear couple mode model for cascaded PhC cavities is established to analyze the behavior of the device, and numerical simulation results are in good agreement with the experiment results.
出版源：Optics Letters
