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Osahon, Isaac N. O.; Rajbhandari, Sujan; Kostakis, Ioannis; Ihsan, Asim; Powell, Denise; Meredith, Wyn; Missous, Mohamed; Haas, Harald; Tang, Jianming
Experimental demonstration of 38 Gbps over 2.5 m OWC systems with eye-safe 850 nm SM-VCSELs Journal Article
In: IEEE Photonics Technology Letters, vol. 36, no. 3, pp. 139–142, 2024, ISSN: 1041-1135.
Abstract | Links | BibTeX | Tags: discrete multi-tone (DMT), eye safety, optical wireless communication (OWC), singlemode vertical cavity surface emitting laser (SM-VCSEL)
@article{osahon_experimental_2024,
title = {Experimental demonstration of 38 Gbps over 2.5 m OWC systems with eye-safe 850 nm SM-VCSELs},
author = {Isaac N. O. Osahon and Sujan Rajbhandari and Ioannis Kostakis and Asim Ihsan and Denise Powell and Wyn Meredith and Mohamed Missous and Harald Haas and Jianming Tang},
doi = {10.1109/LPT.2023.3337943},
issn = {1041-1135},
year = {2024},
date = {2024-02-01},
journal = {IEEE Photonics Technology Letters},
volume = {36},
number = {3},
pages = {139–142},
abstract = {With a directly modulated 850 nm single-mode vertical cavity surface emitting laser (SM-VCSEL), we experimentally achieve a gross data rate of ∼38 Gbps over a 2.5 m optical wireless communication (OWC) link at the 7% Reed-Solomon forward error correction (RS-FEC) limit. The OWC link is demonstrated using an eye-safe transmitted optical power of -1.47 dBm and discrete multi-tone (DMT) modulation with adaptive bit-and-power loading. The SM-VCSEL has a relative intensity noise (RIN) of ∼-137 dB/Hz, which is lower than that of a typical commercial 850 nm multimode VCSEL (∼-129 dB/Hz). Therefore, under almost identical OWC link operating conditions, the SM-VCSEL provides a gross data-rate increase of ∼19 Gbps and an optical signal-to-noise-ratio (SNR) gain of ∼5 dB compared to its multimode counterpart having a similar modulation bandwidth. Furthermore, we demonstrate an error-free net data rate of ∼17 Gbps at a received optical power of -7 dBm, which suggests the feasibility of utilising the SM-VCSEL to realise indoor gigabit OWC applications.},
keywords = {discrete multi-tone (DMT), eye safety, optical wireless communication (OWC), singlemode vertical cavity surface emitting laser (SM-VCSEL)},
pubstate = {published},
tppubtype = {article}
}
With a directly modulated 850 nm single-mode vertical cavity surface emitting laser (SM-VCSEL), we experimentally achieve a gross data rate of ∼38 Gbps over a 2.5 m optical wireless communication (OWC) link at the 7% Reed-Solomon forward error correction (RS-FEC) limit. The OWC link is demonstrated using an eye-safe transmitted optical power of -1.47 dBm and discrete multi-tone (DMT) modulation with adaptive bit-and-power loading. The SM-VCSEL has a relative intensity noise (RIN) of ∼-137 dB/Hz, which is lower than that of a typical commercial 850 nm multimode VCSEL (∼-129 dB/Hz). Therefore, under almost identical OWC link operating conditions, the SM-VCSEL provides a gross data-rate increase of ∼19 Gbps and an optical signal-to-noise-ratio (SNR) gain of ∼5 dB compared to its multimode counterpart having a similar modulation bandwidth. Furthermore, we demonstrate an error-free net data rate of ∼17 Gbps at a received optical power of -7 dBm, which suggests the feasibility of utilising the SM-VCSEL to realise indoor gigabit OWC applications.