CPC G02F 1/015 (2013.01) [G02B 1/002 (2013.01); G02F 1/0063 (2013.01); G02F 1/29 (2013.01); B82Y 20/00 (2013.01); G02F 1/0154 (2021.01); G02F 1/292 (2013.01); G02F 2202/30 (2013.01); H01Q 15/0086 (2013.01)] | 9 Claims |
1. A beam steering apparatus comprising:
a mirror;
a refractive index modulation layer disposed on the mirror;
a nanoantenna on the refractive index modulation layer; and
an insulating layer disposed between the nanoantenna and the refractive index modulation layer, wherein the insulating layer has a thickness distribution in which a first thickness of the insulating layer on a central region of the mirror is less than a second thickness of the insulating layer on an edge region of the mirror,
wherein a refractive index of the refractive index modulation layer is modulated to control a propagation direction of a beam.
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