light

Gbit/s Visible Light Communications

-

KAUST

Visible light communication (VLC or LiFi) has been a topic of intense research after the idea was proposed in 2011. To date, a data rate of multiple 100s Mbps has been demonstrated using LED as light source. At KAUST, we are developing the next generation of SSL lighting using visible laser diodes (LDs) and superluminescent diodes (SLDs). Laser diodes and SLDs do not suffer efficiency droop at high current densities. This allows for the design of lamps using a single, small footprint, light-emitting chip operating at high current densities. Using a single chip reduces system costs compared with LEDs because the system uses less material per chip, requires fewer chips, and employs simplified optics and a simplified heat-sink. The chip area required for LED technologies will be significantly reduced using LD/SLD-based solid-state lighting. This technology will also enable highly controllable beams in term of tunable throw distance, tunable color temperature and rendering index. Multiple Gbit/s VLC links have been demonstrated using LD/SLD as transmitters. In this talk, I will focus on the recent progress of visible diode LD/SLD-based lighting technology and high-speed transmitters and receivers for multiple-Gbps VLC and underwater wireless optical communication.

A different kind of light

1 min read ·
The discovery of the incandescent light bulb has transformed human existence. New LED technologies promise to be the next step forward.

The International Year of Light Open Day

1 min read ·
The International Year of Light (IYL) Open Day event took place at KAUST on December 3, 2015. The event was designed to celebrate light’s impact on human welfare as well as the importance of light as one of the most challenging fields of research in contemporary science. The Open Day Exhibition showcased the latest technological developments in light research, with special emphasis on photonics and LED-based technologies and the innovative applications that they will bring to the energy and communication sectors in the future. The exhibit experiments and the striking materials were provided by

Color-changing coatings ready for the big time

1 min read ·
The dazzling colors of peacock feathers arise from the physical interaction of light with biological nanostructures. Researchers have discovered how to exploit this natural trickery known as structural coloration into a large-scale printing technology that produces lightweight and ultraresistant coatings in any color desirable.

Driven to diffraction

1 min read ·
Optical elements that diffract light could lead to smaller and more powerful cameras.

A firefly's flash inspires new nanolaser light

1 min read ·
Synchronized emissions from innovative on-chip lasers create possibilities for inexpensive artificial neural networks.

CEMSE’s Professor Boon Ooi appointed Fellow of the Optical Society of America (OSA)

1 min read ·
Boon Ooi, Professor of Electrical Engineering and Director of the KACST - Technology Innovation Center for Solid-State Lighting, under the Computer, Electrical and Mathematical Sciences and Engineering Division of KAUST, was recently appointed Fellow of the Optical Society of America (OSA).

The darkest black

1 min read ·
Metallic nanostructures absorb light better than any other known structures.

Yveline Pailles

Postdoctoral Research Fellow, Photonics Laboratory
Yveline Pailles was a Postdoctoral Fellow in the Photonics Laboratory at King Abdullah University of Science and Technology (KAUST). She is currently studying the effect of pulsed single-wavelength laser on growth and development of basil (Ocimum basilicum. L). She received her bachelor's degree in Food Industry Engineering from ITESM Campus Queretaro, Mexico, and her master's and Ph.D. degrees in Desert Agriculture, Bioscience from KAUST. During her master's studies, she discovered her interest in plant science and became part of the Plant Stress Genomics Research Center. Later on, she

Guangyu Liu

Research Scientist, Photonics Laboratory
Guangyu Liu was a Research Scientist at Photonics Laboratory in the Division of Computer, Electrical and Mathematical Sciences & Engineering (CEMSE) at King Abdullah University of Science & Technology (KAUST). She received her Ph.D. in Electrical Engineering at Lehigh University, Pennsylvania, United States of America (USA) in 2013 with the research focus on III-nitride semiconductor nanostructures and optoelectronics for solid-state lighting. Her B.Sc. in Electronic Science and Technology was received with honor at Huazhong University of Science and Technology (HUST), Hubei, China in 2008