科研之友
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摘要
We analyze optical phased arrays with aperiodic pitch and element-to-element spacing greater than one wavelength at channel counts exceeding hundreds of elements. We optimize the spacing between waveguides for highest side-mode suppression providing grating lobe free steering in full visible space while preserving the narrow beamwidth. Optimum waveguide placement strategies are derived and design guidelines for sparse (> 1.5 lambda and > 3 lambda average element spacing) optical phased arrays are given. Scaling to larger array areas by means of tiling is considered.
- 出版日期2017-2-6
