Jiayang Wu, Tania Moein, Xingyuan Xu, Yuning Zhang, Y. Qu, L. Jia, M. Tan, D. Moss
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Spectral Engineering of Photonic Filters Based on Mode Splitting in Self-Coupled Silicon Nanowire Waveguides
We investigate mode splitting in integrated standing-wave resonators formed by self-coupled silicon nanowire waveguides. By changing coupling strengths of the directional couplers and phase shifts along the connecting waveguides, rich filtering characteristics for spectral engineering are experimentally achieved and show good agreement with theory.