Over 10 Gbps VLC for long-distance applications using a GaN-based series-biased micro-LED array

Xie, Enyuan and Bian, Rui and He, Xiangyu and Islim, Mohamed Sufyan and Chen, Cheng and McKendry, Jonathan J. D. and Gu, Erdan and Haas, Harald and Dawson, Martin D. (2020) Over 10 Gbps VLC for long-distance applications using a GaN-based series-biased micro-LED array. IEEE Photonics Technology Letters, 32 (9). pp. 499-502. ISSN 1041-1135

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    Abstract

    By employing a GaN-based series-biased micro-light emitting diode (µLED) array and orthogonal frequency division multiplexing modulation format, a high-speed free-space visible light communication system for long-distance applications has been demonstrated. The blue series-biased µLED array, which consists of 3×3, 20 µm-diameter µLED elements, presents promising performance with an optical power and -6dB electrical modulation bandwidth of over 10 mW and 980 MHz, respectively. Record data transmission rates have been successfully achieved at different free-space distances. Within 5 m transmission distances, over 10 Gbps data rates at the forward error correction (FEC) floor of 3.8×10-3are accomplished. Extending the transmission distances to 20m, the data rates are maintained at the Gbps level at the FEC floor.