High-speed visible light communication based on a III-nitride series-biased micro-LED array

Enyuan Xie, Xiangyu He, Mohamed Sufyan Islim, Ardimas Purwita, Jonathan J. D. McKendry, Erdan Gu, Harald Haas, Martin D. Dawson

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Visible light communication (VLC) using III-nitride light-emitting diodes (LEDs) offers many advantages such as license-free operation, high spatial diversity and innate security. In particular, micro-LEDs (μLEDs) are strong candidates for VLC due to their high modulation bandwidths. However, the low optical power of a single μLED is a key factor limiting VLC performance. In this paper, we report an optimized series-biased μLED array to achieve higher optical power while retaining high modulation bandwidth for high-speed VLC. An example array consisting of 3 × 3 40 μm-in-diameter μLED elements is presented here. At a current density of 3200 A/cm 2 in direct-current operation, the optical power and small signal 6-dB electrical modulation bandwidth of a blue-emitting series-biased μLED array are over 18.0 mW and 285 MHz, respectively. The data transmission capabilities of this μLED array are demonstrated by using on-off keying, pulse-amplitude modulation, and orthogonal frequency division multiplexing modulation formats over free space with the error-free data transmission rates of 1.95, 2.37, and 4.81 Gb/s, respectively.

LanguageEnglish
Pages1180-1186
Number of pages7
JournalJournal of Lightwave Technology
Volume37
Issue number4
Early online date24 Dec 2018
DOIs
Publication statusPublished - 15 Feb 2019

Fingerprint

nitrides
optical communication
light emitting diodes
high speed
modulation
data transmission
bandwidth
pulse amplitude modulation
keying
frequency division multiplexing
retaining
format
direct current
current density

Keywords

  • visible light communication
  • series-biased micro-LED array
  • VLC

Cite this

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title = "High-speed visible light communication based on a III-nitride series-biased micro-LED array",
abstract = "Visible light communication (VLC) using III-nitride light-emitting diodes (LEDs) offers many advantages such as license-free operation, high spatial diversity and innate security. In particular, micro-LEDs (μLEDs) are strong candidates for VLC due to their high modulation bandwidths. However, the low optical power of a single μLED is a key factor limiting VLC performance. In this paper, we report an optimized series-biased μLED array to achieve higher optical power while retaining high modulation bandwidth for high-speed VLC. An example array consisting of 3 × 3 40 μm-in-diameter μLED elements is presented here. At a current density of 3200 A/cm 2 in direct-current operation, the optical power and small signal 6-dB electrical modulation bandwidth of a blue-emitting series-biased μLED array are over 18.0 mW and 285 MHz, respectively. The data transmission capabilities of this μLED array are demonstrated by using on-off keying, pulse-amplitude modulation, and orthogonal frequency division multiplexing modulation formats over free space with the error-free data transmission rates of 1.95, 2.37, and 4.81 Gb/s, respectively.",
keywords = "visible light communication, series-biased micro-LED array, VLC",
author = "Enyuan Xie and Xiangyu He and Islim, {Mohamed Sufyan} and Ardimas Purwita and McKendry, {Jonathan J. D.} and Erdan Gu and Harald Haas and Dawson, {Martin D.}",
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High-speed visible light communication based on a III-nitride series-biased micro-LED array. / Xie, Enyuan; He, Xiangyu; Islim, Mohamed Sufyan; Purwita, Ardimas; McKendry, Jonathan J. D.; Gu, Erdan; Haas, Harald; Dawson, Martin D.

In: Journal of Lightwave Technology, Vol. 37, No. 4, 15.02.2019, p. 1180-1186.

Research output: Contribution to journalArticle

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AU - Xie, Enyuan

AU - He, Xiangyu

AU - Islim, Mohamed Sufyan

AU - Purwita, Ardimas

AU - McKendry, Jonathan J. D.

AU - Gu, Erdan

AU - Haas, Harald

AU - Dawson, Martin D.

N1 - © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2019/2/15

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N2 - Visible light communication (VLC) using III-nitride light-emitting diodes (LEDs) offers many advantages such as license-free operation, high spatial diversity and innate security. In particular, micro-LEDs (μLEDs) are strong candidates for VLC due to their high modulation bandwidths. However, the low optical power of a single μLED is a key factor limiting VLC performance. In this paper, we report an optimized series-biased μLED array to achieve higher optical power while retaining high modulation bandwidth for high-speed VLC. An example array consisting of 3 × 3 40 μm-in-diameter μLED elements is presented here. At a current density of 3200 A/cm 2 in direct-current operation, the optical power and small signal 6-dB electrical modulation bandwidth of a blue-emitting series-biased μLED array are over 18.0 mW and 285 MHz, respectively. The data transmission capabilities of this μLED array are demonstrated by using on-off keying, pulse-amplitude modulation, and orthogonal frequency division multiplexing modulation formats over free space with the error-free data transmission rates of 1.95, 2.37, and 4.81 Gb/s, respectively.

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