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Push–Pull Optical Nonreciprocal Transmission in Cascaded Silicon Microring Resonators

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6 Author(s)
Mu Xu ; State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, China ; Jiayang Wu ; Tao Wang ; Xiaofeng Hu
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We experimentally demonstrate a push-pull optical nonreciprocal transmission (ONT) mechanism induced by thermo-optic effect in cascaded silicon microring resonators (MRRs). A nonreciprocal extinction ratio of up to 27 dB and an operation bandwidth larger than 0.15 nm are achieved in the proposed ONT system. The device can operate with a resonance mismatch between the two cascaded MRRs from 0.14 nm to 0.55 nm. The proposed ONT device could potentially find applications in optical diodes and bidirectional control of light in future on-chip all-optical information processing systems.

Published in:

IEEE Photonics Journal  (Volume:5 ,  Issue: 1 )