Nanopatterned luminescent concentrators for visible light communications

Area of Science:

• Optoelectronics
• Materials Science
• Wireless Communication

Background:

• Visible light communication (VLC) offers high-speed wireless data transmission using unlicensed spectrum.
• Achieving high data rates in VLC necessitates intense light signals focused on small, fast photodiodes.
• Conventional focusing optics limit the photodiode's field of view (FoV) due to étendue conservation.

Purpose of the Study:

• To investigate nanopatterned luminescent solar concentrators (LSCs) as a method to enhance light signals for VLC.
• To assess the impact of nanopatterning on LSC optical gain and FoV.
• To demonstrate a practical application of LSCs in simplifying VLC detector integration with mobile devices.

Main Methods:

• Fabrication of nanopatterned luminescent solar concentrators on flexible plastic substrates.
• Characterization of the optical gain provided by the nanopatterned LSCs.
• Comparison of performance against traditional rectangular LSCs.

Main Results:

• Nanopatterned LSCs achieved a twofold increase in optical gain compared to conventional rectangular designs.
• The LSC approach enhances signal intensity without compromising the photodiode's field of view.
• The developed LSCs offer a simplified integration pathway for VLC detectors.

Conclusions:

• Nanopatterned LSCs represent a significant advancement in enhancing optical gain for VLC systems.
• This technology alleviates the need for complex pointing and tracking mechanisms in VLC detectors.
• The flexible, high-gain LSCs pave the way for seamless integration with smart mobile terminals.