scholarly journals High Performance self-injection locked 524 nm green laser diode for high bitrate visible light communications

2018 ◽  
Author(s):  
M. Hosne M. Shamim ◽  
M. A. Shemis ◽  
Chao Shen ◽  
Hassan M. Oubei ◽  
Tien Khee Ng ◽  
...  
Keyword(s):  
Visible Light ◽  
Laser Diode ◽  
High Performance ◽  
Green Laser ◽  
Visible Light Communications

scholarly journals Coumarins as Powerful Photosensitizers for the Cationic Polymerization of Epoxy-Silicones under Near-UV and Visible Light and Applications for 3D Printing Technology

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2063 ◽  
Author(s):  
Mira Abdallah ◽  
Akram Hijazi ◽  
Frédéric Dumur ◽  
Jacques Lalevée
Keyword(s):  
3D Printing ◽  
Visible Light ◽  
Blue Light ◽  
Laser Diode ◽  
Cationic Polymerization ◽  
High Performance ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Visible Irradiation

In this study, eight coumarins (coumarins 1–8) are proposed as near-UV and blue light sensitive photoinitiators/photosensitizers for the cationic polymerization (CP) of epoxysilicones when combined with 4-isopropyl-4’-methyldiphenyliodonium tetrakis(pentafluorophenyl)borate (IOD). Among these coumarins, four of them (coumarins 1, 2, 6 and 8) have never been reported in the literature, i.e., these structures have been specifically designed to act as photoinitiators for silicones upon near UV and visible irradiation. Good final reactive epoxy function conversions (FCs) and also high rates of polymerization (Rp) were achieved in the presence of the newly proposed coumarin-based systems. The polymers generated from the photopolymerization of epoxysilicones can be considered as attractive candidates for several applications such as: elastomers, coatings, adhesives, and so on. The goal of this study focuses also on the comparison of the new proposed coumarins with well-established photosensitizers i.e., 1-chloro-4-propoxythioxanthone (CPTX), 9,10-dibutoxyanthracene (DBA) or some commercial coumarins (Com. Coum). As example of their high performance, the new proposed coumarins were also used for laser write experiments upon irradiation with a laser diode at 405 nm in order to develop new cationic 3D printing systems.

Visible light communications using a directly modulated 422 nm GaN laser diode

2013 ◽  
Vol 38 (19) ◽  
pp. 3792 ◽  
Author(s):  
Scott Watson ◽  
Mingming Tan ◽  
Stephen P. Najda ◽  
Piotr Perlin ◽  
Mike Leszczynski ◽  
...  
Keyword(s):  
Visible Light ◽  
Laser Diode ◽  
Visible Light Communications

scholarly journals Semipolar InGaN quantum-well laser diode with integrated amplifier for visible light communications

2018 ◽  
Vol 26 (6) ◽  
pp. A219 ◽  
Author(s):  
Chao Shen ◽  
Tien Khee Ng ◽  
Changmin Lee ◽  
Shuji Nakamura ◽  
James S. Speck ◽  
...  
Keyword(s):  
Quantum Well ◽  
Visible Light ◽  
Laser Diode ◽  
Visible Light Communications ◽  
Quantum Well Laser

scholarly journals Analysis and Experimental Investigation of the Light Dimming Effect on Automotive Visible Light Communications Performances

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4446
Author(s):  
Cătălin Beguni ◽  
Alin-Mihai Căilean ◽  
Sebastian-Andrei Avătămăniței ◽  
Mihai Dimian
Keyword(s):  
Visible Light ◽  
Duty Cycle ◽  
High Performance ◽  
Research Area ◽  
Cost Ratio ◽  
Visible Light Communications ◽  
Optical Noise ◽  
Communication Range ◽  
Low Duty Cycle ◽  
Communication Links

The use of Visible Light Communications (VLC) in vehicular applications has become a major research area due to its simplicity, high performance to cost ratio, and great deployment potential. In this context, this article provides one of the very few analyses and experimental evaluations concerning the integration of a light dimming function in vehicular VLC systems. For this purpose, a vehicle-to-vehicle VLC prototype has been implemented and used to evaluate the systems’ communication performances in light dimming conditions, while decreasing the duty cycle from 40% to 1%, and increasing the communication range from 1 to 40–50 m. The experimental results showed that in normal lighting conditions, the VLC technology can easily support low duty cycle light dimming for ranges up to 40 m, while maintaining a 10−6 BER. Nevertheless, in strong optical noise conditions, when the system reaches its SNR limit, the communication range can decrease by half, whereas the BER can increase by 2–4 orders of magnitude. This article provides consistent evidence concerning the high potential of the VLC technology to support inter-vehicle communication links, even in light dimming conditions.

High Performance Visible-light-responsive TiO2/CuxO/Cu Photocatalyst

2016 ◽  
Vol 136 (8) ◽  
pp. 551-552
Author(s):  
Sumio Kogoshi ◽  
Nao Kato ◽  
Yu Katsui ◽  
Noboru Katayama ◽  
Syota Yazawa ◽  
...  
Keyword(s):  
Visible Light ◽  
High Performance

scholarly journals A Relay-Assisted Vehicular Visible Light Communications Network

2020 ◽  
Author(s):  
Elizabeth Eso ◽  
Petr Pesek ◽  
Petr Chvojka ◽  
Zabih Ghassemlooy ◽  
Stanislav Zvanovec ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Communications ◽  
Communications Network

Carbon quantum dot-sensitized hollow TiO2 spheres for high-performance visible light photocatalysis

2021 ◽  
Author(s):  
Xianfeng Zhang ◽  
Zongqun Li ◽  
Shaowen Xu ◽  
Yaowen Ruan
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
High Performance ◽  
Carbon Quantum Dots ◽  
Visible Light Photocatalysis ◽  
Carbon Quantum Dot ◽  
Visible Light Photocatalytic

TiO2/CQD composites were synthesized through carbon quantum dots covalently attached to the surface of hollow TiO2 spheres for visible light photocatalytic degradation of organics.

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