CPC G02F 1/015 (2013.01) [H01S 5/0085 (2013.01); H01S 5/18375 (2013.01); G02F 2202/10 (2013.01)] | 12 Claims |
1. An optical modulator comprising:
a plurality of unit cells;
an active layer comprising a plurality of refractive index changing areas that are separated from each other in a horizontal direction, each of the plurality of refractive index changing areas having a refractive index that changes based on an electrical signal applied thereto;
a plurality of antenna patterns provided over the active layer;
an insulating material is provided between each of the plurality of refractive index changing areas to electrically separate the plurality of refractive index changing areas from each other; and
a mirror layer provided under the active layer opposite to the plurality of antenna patterns,
wherein a distance between adjacent refractive index changing areas of the plurality of refractive index changing areas is less than ½ of a width of each of the plurality of refractive index changing areas.
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