1：Experimental Design and Method Selection:

The study involves the design and analysis of a metamaterial antenna on an electro-optic modulator for detecting and converting wireless terra-hertz signals to light-wave signals. The methodology includes electromagnetic field analysis and the use of an equivalent circuit model for the electric-LC resonator.

2：Sample Selection and Data Sources:

A 0.25 mm-thick z-cut LiNbO3 crystal is used as the substrate for the proposed conversion device. The optical waveguide is fabricated using titanium diffusion method.

3：25 mm-thick z-cut LiNbO3 crystal is used as the substrate for the proposed conversion device. The optical waveguide is fabricated using titanium diffusion method. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: The fabrication process involves a thin SiO2 buffer layer, a 1 μm-thick gold metal film for the electric-LC resonators, and optical fibers for coupling.

4：Experimental Procedures and Operational Workflow:

The device is fabricated by depositing a buffer layer, fabricating the optical waveguide, and then the electric-LC resonators with a polarization reversal pattern. The device is then coupled with optical fibers for measurement.

5：Data Analysis Methods:

The characteristics of the fabricated device are measured using an optical spectrum analyser to identify optical carrier and sidebands due to terra-hertz radiation.