We present a broadband free space light communication using high-speed micro organic light emitting diode (OLED) as transmitter. We report first the design and bandwidth measurements of innovative OLEDs whose size are in the range of tens of micrometres. For OLEDs with reduced active area such as 40 µm x 40 µm, a cut-off frequency up to 345 MHz is reached. Then a free-space optical wireless link is build based on these high-speed micro-OLED. Using Direct Current Optical-Orthogonal Frequency Division Multiplexing) with adaptive bit and energy loading, we achieve a data rate of 2.85 Gb/s.
Presented by Luc Maret, Research Engineer at CEA-Leti (Alternative Energies and Atomic Energy Commission), who is driven by Innovation for free-space and guided optical communications!
About Luc Maret
Mr. Luc Maret is a permanent research scientist and project manager at the Electronics and Information Technologies Laboratory (LETI) of the French Alternative Energies and Atomic Energy Commission (CEA, Grenoble, France), in the Signal, Protocols and Radio Platforms Laboratory. His research interests include physical layer designs, digital signal processing and algorithms in RF and optical wireless systems, in the area of telecoms and radar applications. He is now conducting ultra high-speed optical wireless communication activities using micro-sources.
CEA-Leti, a technology research institute at CEA Tech, pioneers micro and nanotechnologies, tailoring differentiating applicative solutions that ensure competitiveness in a wide range of markets. The institute tackles critical challenges such as healthcare, energy, transport and ICTs. Its multidisciplinary teams deliver solid expertise for applications ranging from sensors to data processing and computing solutions, leveraging world-class pre-industrialization facilities. CEA-Leti builds long-term relationships with its industrial partners – global companies, SMEs and startups – and actively supports the launch of technology startups.
Luc Maret is speaker at the 2023 edition of the LiFi Conference.