Patent ID: 9703127
Date: 2017-07-11
CPC Classifications: G02F

Claim:
1. A method for fabricating a waveguide structure ( 1 ) comprising the steps of: providing a core ( 2 ) comprising a layer of at least an electro-optic dielectric material ( 3 ), a layer of at least a semiconductor material ( 4 ) below the electro-optic material ( 3 ) and a layer of at least a semiconductor material ( 5 ) above the electro-optic material ( 3 ), and providing electrodes ( 6 , 6 ′, 7 , 8 ) that are configurable for voltage application, wherein: the electro-optic dielectric material ( 3 ) is selected to have a Pockels tensor containing at least one non-vanishing element rij where i≠j and the electrodes ( 6 , 6 ′, 7 , 8 ) are provided as comprising respective sets of electrodes ( 6 , 6 ′, 7 , 8 ) that comprise a set of electrodes ( 6 ) that are provided substantially in direct contact with the electro-optic dielectric material ( 3 ) and a set of electrodes ( 7 , 8 ) comprising at least an electrode ( 7 ) that is provided substantially in direct contact with the semiconductor material ( 4 ) provided below the electro-optic material ( 3 ) and at least an electrode ( 8 ) that is provided substantially in direct contact with the semiconductor material ( 5 ) provided above the electro-optic material ( 3 ), wherein the respective sets of electrodes ( 6 , 6 ′, 7 , 8 ) are configurable to apply in the electro-optic material ( 3 ), when the waveguide structure ( 1 ) is in use, at least a substantially horizontal electrical field ( 11 ) and at least a substantially vertical electrical field ( 12 ) that are orientated substantially perpendicular relative to each other, and wherein the horizontal electrical field (