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Many-mode grating couplers by avoiding undesired couplings
Nazar Pyvovar, Hao Li, Zhaowei Dai +1
To couple many independent modes from free space to on chip, the key challenge is not enhancing the many necessary coupling rates (scattering-matrix elements) between targeted mode…
Multimode grating couplers via foundry-compliant inverse design
Hao Li, Nazar Pyvovar, Zhaowei Dai +1
We apply a systematic inverse design approach to discover foundry-compliant, multilayer grating couplers that can efficiently couple a number of independent waves from free space t…
Dispersion Engineered Metastructures Enabling Broadband Angular Selectivity
Phillippe Pearson, Zhaowei Dai, Yiran Gu +2
Angle-selective optical devices are of importance to several applications such as photovoltaics, high-sensitivity photodetectors and displays. There are several approaches to reali…
A Novel Approach to Interface High-Q Fabry-Pérot Resonators with Photonic Circuits
Haotian Cheng, Naijun Jin, Zhaowei Dai +8
The unique benefits of Fabry-Pérot resonators as frequency-stable reference cavities and as an efficient interface between atoms and photons make them an indispensable resource for…