High-Speed 405nm Violet Superluminescent Diode for 3.6 Gbps Visible Light Communication

III-nitride superluminescent diode (SLD) has emerged as a promising light emitter in visible light communication systems. This work demonstrates a high-speed 405-nm SLD with a titled facet and integrated absorber configuration on c-plane GaN substrate. A data rate of 3.6 Gbps has been successfully achieved through the utilization of bit-loading discrete multi-tone (DMT) modulation technique, paving a path towards high data rate optical wireless data links for B5G applications.