High Bandwidth GaN-Based Micro-LEDs for Multi-Gb/s Visible Light Communications
Research output: Contribution to journal › Article › peer-review
Electronic versions
DOI
Gallium-nitride (GaN)-based light-emitting diodes (LEDs) are highly efficient sources for general purpose illumination. Visible light communications (VLC) uses these sources to supplement existing wireless communications by offering a large, licence-free region of optical spectrum. Here, we report on progress in the development of micro-scale GaN LEDs (micro-LEDs), optimized for VLC. These blue-emitting micro-LEDs are shown to have very high electrical-to-optical modulation bandwidths, exceeding 800 MHz. The data transmission capabilities of the micro-LEDs are illustrated by demonstrations using ON-OFF-keying, pulse-amplitude modulation, and orthogonal frequency division multiplexing modulation schemes to transmit data over free space at the rates of 1.7, 3.4, and 5 Gb/s, respectively.
Keywords
- Light emitting diodes, Bandwidth, Modulation, Current density, OFDM, Data communication, Bit error rate, pulse amplitude modulation, amplitude shift keying, free-space optical communication, gallium compounds, III-V semiconductors, integrated optoelectronics, light emitting diodes, OFDM modulation, optical communication equipment, PAM, micro light-emitting diodes, GaN, optical communication, visible-light communication
Original language | English |
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Pages (from-to) | 2023-2026 |
Number of pages | 4 |
Journal | IEEE Photonics Technology Letters |
Volume | 28 |
Issue number | 19 |
DOIs | |
Publication status | Published - 1 Oct 2016 |
Externally published | Yes |