Abstract
Development of the waveguide grating antenna with high directionality is significantly important for the optical phased array. A dual-layer structure with the grating pattern on the layer is proposed to improve the directionality of the waveguide grating antenna. High directionality of more than 89% can be achieved, and the length of the waveguide grating antenna is longer than 4 mm.
© 2019 Optical Society of America
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