High-power blue superluminescent diode for high CRI lighting and high-speed visible light communication

Alatawi, Abdullah A.; Holguín‐Lerma, Jorge A.; Kang, Chun Hong; Shen, Chao; Subedi, Ram Chandra; Albadri, Abdulrahman M.; Alyamani, Ahmed Y.; Ng, Tien Khee; Ooi, Boon S.

doi:10.1364/oe.26.026355

Cited by 54 publications

(59 citation statements)

References 56 publications

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“…This makes the difference in scattering properties in WLEDs, resulting in differences in optical properties. In Figure 2, it is easy to see that the highest yellowemitting YAG:Ce 3+ phosphor concentration is in the Y Based on the results of the previous studies [8][9][10][11][12][13][14], the diameter of phosphor particles is…”

Section: Simulationmentioning

confidence: 94%

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Selecting a Suitable Remote Phosphor Configuration for Improving Color Quality of White Led

Lee¹,

Le²,

Anh³

2019

J. ADV. ENG. COMPUT.

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When compared with two conformal phosphor and in-cup phosphor structures, the remote phosphor structure has higher luminescent performance. However, it is difficult to control the color quality of the remote phosphor structure, so it has become a research target in recent years. So far, there are two remote phosphor structures used to improve color quality including dual-layer phosphor configuration and triple-layer phosphor configuration. This study suggests using those two configurations to make multi-chip white LEDs (WLEDs) that can achieve adequate values in color rendering index (CRI), color quality scale (CQS), luminous efficacy (LE) and color uniformity. WLEDs with a color temperature of 5600 K are applied. Research results show that the triple-layer phosphor configuration is superior in CRI, CQS, LE. Besides, the color deviation decreases significantly, meaning that the color homogeneity increases with the triple-layer phosphor configuration. This can be demonstrated by analyzing the scattering characteristics of phosphor classes through Mie theory, thus making the research results more reliable and valuable for producing quality WLEDs. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

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Section: Simulationmentioning

confidence: 94%

“…Therefore, the conformal coating method can be used as an alternative. This method distributes colors uniformly, resulting in angular homogeneity of correlated color temperature (CCT) [8]. However, the disadvantage of a conformal phosphor structure is the backscattering eect, which reduces luminous eciency.…”

Section: Introductionmentioning

confidence: 99%

Selecting a Suitable Remote Phosphor Configuration for Improving Color Quality of White Led

Lee¹,

Le²,

Anh³

2019

J. ADV. ENG. COMPUT.

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“…In this section, we discuss the critical advances in light emitters for enabling high data rate VLC systems as illustrated in Fig. 4 [11,12,15,[42][43][44][45][46][47][48][49][50][51].…”

Section: Devices In Laser-based Vlc Systemsmentioning

confidence: 99%

A tutorial on laser-based lighting and visible light communications: device and technology [Invited]

et al. 2019

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This tutorial focuses on devices and technologies that are part of laser-based visible light communication (VLC) systems. Laser-based VLC systems have advantages over their light-emitting-diode-based counterparts, including having high transmission speed and long transmission distance. We summarize terminologies related to laser-based solid-state lighting and VLC, and further review the advances in device design and performance. The high-speed modulation characteristics of laser diodes and superluminescent diodes, the on-chip integration of optoelectronic components in the visible color regime, such as the high-speed integrated photodetector, were introduced. The modulation technology for laser-based white light communication systems, and the challenges for future development were then discussed.

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“…In recent years, visible light communication (VLC) had progressed tremendously with up to multi-Gbps data rates demonstrated [1][2][3][4][5][6][7][8]. At the same time, by utilizing the optical carrier frequency in the range of 400 to 800 THz, VLC has also been proposed as the next-generation high-throughput communication technology for complementing the saturated bandwidth in the radio frequency (RF) domain [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Ultraviolet-to-blue color-converting scintillating-fibers photoreceiver for 375-nm laser-based underwater wireless optical communication

et al. 2019

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Underwater wireless optical communication (UWOC) can offer reliable and secure connectivity for enabling future internet-of-underwater-things (IoUT), owing to its unlicensed spectrum and high transmission speed. However, a critical bottleneck lies in the strict requirement of pointing, acquisition, and tracking (PAT), for effective recovery of modulated optical signals at the receiver end. A large-area, high bandwidth, and wide-angle-of-view photoreceiver is therefore crucial for establishing a high-speed yet reliable communication link under non-directional pointing in a turbulent underwater environment. In this work, we demonstrated a large-area, of up to a few tens of cm 2 , photoreceiver design based on ultraviolet(UV)-to-blue color-converting plastic scintillating fibers, and yet offering high 3-dB bandwidth of up to 86.13 MHz. Tapping on the large modulation bandwidth, we demonstrated a high data rate of 250 Mbps at bit-error ratio (BER) of 2.2 × 10 −3 using non-return-to-zero on-off keying (NRZ-OOK) pseudorandom binary sequence (PRBS) 2 10-1 data stream, a 375-nm laser-based communication link over the 1.15-m water channel. This proof-of-concept demonstration opens the pathway for revolutionizing the photodetection scheme in UWOC, and for non-line-of-sight (NLOS) free-space optical communication.

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High-power blue superluminescent diode for high CRI lighting and high-speed visible light communication

Cited by 54 publications

References 56 publications

Selecting a Suitable Remote Phosphor Configuration for Improving Color Quality of White Led

Selecting a Suitable Remote Phosphor Configuration for Improving Color Quality of White Led

A tutorial on laser-based lighting and visible light communications: device and technology [Invited]

Ultraviolet-to-blue color-converting scintillating-fibers photoreceiver for 375-nm laser-based underwater wireless optical communication

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