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Abstract

A segmented optical modulator includes:

a waveguide where electromagnetic radiation to be modulated is adapted to travel along a travelling direction;between 2 and 30 modulating segments each including:first and second layers of graphene, a portion of the first layer of graphene overlaying a portion of the second and the first and second layers of graphene overlaying a portion of the waveguide;a dielectric layer interposed between the first and second layers of graphene, the dielectric layer having a thickness between 6 nm EOT and 15 nm EOT;a first metal electrode in contact with the first layer of graphene;a second metal electrode in contact with the second layer of graphene;the distance between the first and second electrodes being between 650 nm and 1500 nm;the length of each segment in the travelling direction being between 10 micrometers and 60 micrometers.

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First Claim