Effects of LED device size on UV-C short-range LoS optical wireless communication

Jordan Hill; Cheng Chen; Enyuan Xie; Jonathan J.D. McKendry; Johannes Herrnsdorf; Erdan Gu; Harald Haas; Martin D. Dawson

doi:10.1109/JPHOT.2023.3329980

Effects of LED device size on UV-C short-range LoS optical wireless communication

Jordan Hill, Cheng Chen, Enyuan Xie, Jonathan J.D. McKendry, Johannes Herrnsdorf, Erdan Gu, Harald Haas, Martin D. Dawson

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Abstract

We report systematic investigation of the device-size-dependent performance of ultraviolet C (UV-C) light emitting diodes (LEDs) for optical wireless communication (OWC). Utilizing 273 nm-wavelength devices with diameters in the range of 40 μ m to 300 μ m, the size-dependent electrical, optical and frequency response characteristics of AlGaN UV-C LEDs are analyzed. As the junction area scales down, the smaller devices present lower optical power but faster modulation speed. Based on a 1-m point-to-point OWC system, this study further explores the LED size effect on the communication performance including channel gain, signal-to-noise ratio (SNR), theoretical Shannon capacity, achievable data transmission rate, relevant ratio, and spectral efficiency (SE). The system employing a 60 μ m diameter (micro) LED transmitter achieves the highest average SNR and SE accompanying a data transmission rate up to a 5.53 Gbps at the forward error correction floor of 3.8 ×10−3 . These results suggest an optimal device diameter of ∼ 60 μ m for further development of high-performance UV-C short-range line-of-sight (LoS) OWC.

Original language	English
Article number	7305108
Number of pages	8
Journal	IEEE Photonics Journal
Volume	15
Issue number	6
Early online date	3 Nov 2023
DOIs	https://doi.org/10.1109/JPHOT.2023.3329980
Publication status	Published - 1 Dec 2023

Keywords

UV-C LEDs
size-dependent
optical wireless communications

Access to Document

10.1109/JPHOT.2023.3329980Licence: CC BY 4.0

Hill-etal-IEEEPJ-2023-Effects-of-LED-device-size-on-UV-C-short-range-LoS-optical-wireless-communicationFinal published version, 1.37 MBLicence: CC BY 4.0

HYDRI - HYDrogen sensoR for Industry
Herrnsdorf, J. (Principal Investigator) & Li, D. (Co-investigator)
Innovate UK
1/03/22 → 31/03/25
Project: Research
QuantIC - The UK Quantum Technology Hub in Quantum Imaging
Dawson, M. (Principal Investigator), Jeffers, J. (Co-investigator) & Strain, M. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/12/19 → 31/05/25
Project: Research

Data for: "Effects of LED device size on UV-C short-range LoS optical wireless communication"
Hill, J. (Creator) & Dawson, M. (Supervisor), University of Strathclyde, 3 Nov 2023
DOI: 10.15129/25ddb9b6-0425-43f5-9d92-fbaf2ce257ea
Dataset

Cite this

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title = "Effects of LED device size on UV-C short-range LoS optical wireless communication",

abstract = "We report systematic investigation of the device-size-dependent performance of ultraviolet C (UV-C) light emitting diodes (LEDs) for optical wireless communication (OWC). Utilizing 273 nm-wavelength devices with diameters in the range of 40 μ m to 300 μ m, the size-dependent electrical, optical and frequency response characteristics of AlGaN UV-C LEDs are analyzed. As the junction area scales down, the smaller devices present lower optical power but faster modulation speed. Based on a 1-m point-to-point OWC system, this study further explores the LED size effect on the communication performance including channel gain, signal-to-noise ratio (SNR), theoretical Shannon capacity, achievable data transmission rate, relevant ratio, and spectral efficiency (SE). The system employing a 60 μ m diameter (micro) LED transmitter achieves the highest average SNR and SE accompanying a data transmission rate up to a 5.53 Gbps at the forward error correction floor of 3.8 ×10−3 . These results suggest an optimal device diameter of ∼ 60 μ m for further development of high-performance UV-C short-range line-of-sight (LoS) OWC.",

keywords = "UV-C LEDs, size-dependent, optical wireless communications",

author = "Jordan Hill and Cheng Chen and Enyuan Xie and McKendry, {Jonathan J.D.} and Johannes Herrnsdorf and Erdan Gu and Harald Haas and Dawson, {Martin D.}",

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T1 - Effects of LED device size on UV-C short-range LoS optical wireless communication

AU - Hill, Jordan

AU - Chen, Cheng

AU - Xie, Enyuan

AU - McKendry, Jonathan J.D.

AU - Herrnsdorf, Johannes

AU - Gu, Erdan

AU - Haas, Harald

AU - Dawson, Martin D.

PY - 2023/12/1

Y1 - 2023/12/1

N2 - We report systematic investigation of the device-size-dependent performance of ultraviolet C (UV-C) light emitting diodes (LEDs) for optical wireless communication (OWC). Utilizing 273 nm-wavelength devices with diameters in the range of 40 μ m to 300 μ m, the size-dependent electrical, optical and frequency response characteristics of AlGaN UV-C LEDs are analyzed. As the junction area scales down, the smaller devices present lower optical power but faster modulation speed. Based on a 1-m point-to-point OWC system, this study further explores the LED size effect on the communication performance including channel gain, signal-to-noise ratio (SNR), theoretical Shannon capacity, achievable data transmission rate, relevant ratio, and spectral efficiency (SE). The system employing a 60 μ m diameter (micro) LED transmitter achieves the highest average SNR and SE accompanying a data transmission rate up to a 5.53 Gbps at the forward error correction floor of 3.8 ×10−3 . These results suggest an optimal device diameter of ∼ 60 μ m for further development of high-performance UV-C short-range line-of-sight (LoS) OWC.

AB - We report systematic investigation of the device-size-dependent performance of ultraviolet C (UV-C) light emitting diodes (LEDs) for optical wireless communication (OWC). Utilizing 273 nm-wavelength devices with diameters in the range of 40 μ m to 300 μ m, the size-dependent electrical, optical and frequency response characteristics of AlGaN UV-C LEDs are analyzed. As the junction area scales down, the smaller devices present lower optical power but faster modulation speed. Based on a 1-m point-to-point OWC system, this study further explores the LED size effect on the communication performance including channel gain, signal-to-noise ratio (SNR), theoretical Shannon capacity, achievable data transmission rate, relevant ratio, and spectral efficiency (SE). The system employing a 60 μ m diameter (micro) LED transmitter achieves the highest average SNR and SE accompanying a data transmission rate up to a 5.53 Gbps at the forward error correction floor of 3.8 ×10−3 . These results suggest an optimal device diameter of ∼ 60 μ m for further development of high-performance UV-C short-range line-of-sight (LoS) OWC.

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DO - 10.1109/JPHOT.2023.3329980

M3 - Article

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JO - IEEE Photonics Journal

JF - IEEE Photonics Journal

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M1 - 7305108

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Effects of LED device size on UV-C short-range LoS optical wireless communication

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HYDRI - HYDrogen sensoR for Industry

QuantIC - The UK Quantum Technology Hub in Quantum Imaging

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Data for: "Effects of LED device size on UV-C short-range LoS optical wireless communication"

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