Inverse design optimization for efficient coupling of an electrically injected optical antenna-LED to a single-mode...

Area of Science:

• Photonics
• Nanotechnology
• Optical Communications

Background:

• Next-generation data communication demands efficient, high-speed nanoscale optical sources for low-power applications.
• Existing optical sources face limitations in speed and efficiency for advanced communication systems.

Purpose of the Study:

• To propose and demonstrate an integrated antenna-light-emitting diode (LED) on a single-mode optical waveguide.
• To achieve high coupling and antenna efficiencies for enhanced optical modulation capabilities.

Main Methods:

• Utilized inverse design optimization to engineer the antenna-LED structure.
• Integrated the antenna-LED onto a single-mode optical waveguide for efficient light coupling.

Main Results:

• Achieved a waveguide coupling efficiency of 94%.
• Demonstrated an antenna efficiency of 64%.
• Maintained a high average enhancement factor of 144.

Conclusions:

• The integrated antenna-LED design shows significant potential for high-speed optical modulation.
• This technology could enable direct modulation speeds exceeding 100GHz.
• The developed device is a promising candidate for low-power, next-generation data communication.