Solar-Blind Optical Wireless Communications Over 80 Meters Using a 265-nm High-Power Single-Chip DUV-LED Over 500 mW in Sunlight

Abstract

Direct eye-pattern measurements based on a deepultraviolet (DUV) light emitting diode (LED) optical wireless communication system were performed in sunlight. A state-of-the-art, high-power DUV-LED was developed and used as a transmitter consisting of only one LED chip with a light output power greater than 500 mW at its peak emission wavelength of 265 nm. A DUV light receiver was also developed that excluded sunlight with high performance. We demonstrated clear eye-patterns at 1 Mbps in both line-of-sight (LOS) and non-line-of-sight (NLOS) configurations over a communication distance of 80 meters in sunlight. Index Terms-Deep-ultraviolet light emitting diodes (DUV-LEDs), solar-blind communications, non-line-of-sight (NLOS) wireless communications, eye pattern.

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“…Aluminum gallium nitride (AlGaN)-based deep-ultraviolet (DUV) light-emitting diodes (LEDs) are expected to be used widely in solar-blind communications [1][2][3][4], air and water purification [5], disinfection [6,7], nanoimprinting [8,9] and * Author to whom any correspondence should be addressed.…”