5th kaust-kfupm photonics workshop · 0920 – 0940 prof. samir alghadban, kfupm overview of index...

5th KAUST-KFUPM Photonics Workshop 0 | P a g e

5th KAUST-KFUPM PHOTONICS WORKSHOP

KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY (KAUST)

IBN SINA BUILDING / BUILDING 3 (SEA-VIEW SIDE), LEVEL 5, ROOM 5220

12 OCTOBER 2017

Organized by:

1 | P a g e 5th KAUST-KFUPM Photonics Workshop (on theory and experimental implementation of optical wireless communications)

PROGRAM

Date: 11 October 2017 KFUPM team arrive at KAUST (late night)

Date: 12 October 2017 Photonics Workshop, Ibn Sina Building (sea-view side), Level 5, Room 5220

Morning Session (0840 – 1130) Chairperson: Prof. Mohamed Slim Alouini

0815 – 0840 Light breakfast

0840 – 0900 Prof. Mohamed S. Alouini, KAUST Welcome address /

Research Directions in the Communication Theory Lab at KAUST

0900 – 0920 Dr. Tien Khee Ng, KAUST Optical Communication Research at KAUST Photonics Laboratory

0920 – 0940 Prof. Samir Alghadban, KFUPM Overview of Index Modulation for OFDM and Its Applications

0940 – 1000 Prof. Khurram Qureshi, KFUPM Realization of All-optical Logic Devices Using Injection Locking in

Semiconductor Lasers

1000 – 1020 Dr. Suhail Al-Dharrab, KFUPM Underwater Acoustic Communication and FSO

1020 – 1040 Dr. Mohammed Khan, KFUPM Injection Locked Semiconductor Lasers for Future High Speed

Optical Communications

1040 – 1100 Dr. Osama Amin, KAUST Visible Light for Multi-User Communication Systems

1100 – 1115 Houssem Sifaou, KAUST Robust Linear Transceivers for Multi-stream MU_MIMO Visible

Light Communication

1115 – 1130 Yousef Shnaiwer, KFUPM Network-Coded Femtocaching: Improved Macrocell Offloading

for Future Wireless Networks

1130 – 1330 Lunch – KAUST Diner (Tamimi voucher will be distributed to speakers).

Afternoon Session (1330 – 1505) Chairperson: Dr. Mohammed Khan

1330 – 1345 Mohamed A. Shemis, KFUPM External Injection Locked Red and Blue Semiconductor Lasers

Enabling High Speed Visible Light Communication

1345 – 1400 Emad Alkhazraji, KFUPM L-band External Injection Locked Quantum-dash Laser for Next

Generation WDM Passive Optical Access Networks

1400 – 1415 Md. Shamim, KFUPM Characterization of Self-seeded Visible Light Semiconductor

Laser Diodes for Future Visible Light Communication.

1415 – 1430 Hassan M. Oubei, KAUST Underwater Wireless Communication – Experiments and

Channel Modeling

1430 – 1445 Abdullah Alhalafi, KAUST Wireless Optical Underwater Video System

1445 – 1500 Chao Shen, KAUST Semi-polar GaN Laser and Superluminescent Diodes for White

Light Communications

1500 – 1505 Closing remarks by Dr. Mohammed Khan, KFUPM

1505 – 1700 Coffee/tea break and free interaction

1700 – 1900 Dinner at Harbor Sports Club

2000 Taxi pick-up from KAUST INN 2 to King Abdulaziz Airport – South Terminal


MORNING SESSION

Research Directions in the Communication Theory Lab at KAUST

Mohamed-Slim Alouini

Abstract: Emerging and future wireless communication networks are expected to fulfill the demand for

higher data rates, lower latency, and/or massive connectivity of a growing number of users/devices exploiting

a variety of wireless applications. This envisioned rapid increase in the use of wireless services lead the

wireless research community to start looking at new technologies to address problems related to the radio-

frequency (RF) spectrum exhaustion. This includes the development of (i) new techniques and concepts such

as massive multiple input multiple output (MIMO) systems and heterogeneous networks to improve the

spectral efficiency at the link and network layers, respectively, and (ii) novel schemes to better utilize the

unregulated bandwidth in particular in the upper millimeter wave, THz, and optical portion of the spectrum.

This talk quickly presents some of the research directions pursued within the Communication Theory Lab at

KAUST in order to pave the way towards the successful roll-out and operation of future wireless networks.

Biography: Professor Mohamed-Slim Alouini obtained his PhD from California

Institute of Technology (Caltech) in 1998. He is currently a professor (electrical

engineering) and an Associate Dean in Computer, Electrical and Mathematical

Sciences and Engineering (CEMSE) Division at KAUST. His research interests are in the

modeling, design, and performance analysis of wireless communication systems with

current emphasis on MIMO, diversity, and adaptive modulation systems, cognitive

radio systems, cooperative/collaborative communication systems, multi-hop

communication systems, physical-layer security, MIMO RADAR systems, optical

wireless communications, device-to-device communications, green communications

systems and networks, and small cell/heterogenous networks. He is a Fellow of the

Institute of Electrical and Electronics Engineers (IEEE), a member of the Thomson ISI

Web of Knowledge list of Highly Cited Researchers, and of the Elsevier/Shanghai Ranking list of Most Cited

Researchers, an IEEE Distinguished Lecturer of the IEEE Communications Society, and a co-recipient of best

paper awards in ten IEEE conferences (including ICC, GLOBECOM, VTC, PIMRC and DySPAN).


MORNING SESSION

Optical Communication Research at KAUST Photonics Laboratory

Tien Khee Ng, and Boon S. Ooi

Abstract: Optical wireless communication can be harnessed for hyper-connectivity in the face of RF spectrum

crunching and data security. For energy-efficient systems and related algorithms, innovations in devices are

essential. At KAUST photonics Laboratory, we focus on designing and fabricating monolithically integrated,

and small-foot-print lasers for high speed line-of-sight transmission in both near-infrared and visible

wavelength regime. Specifically, in underwater wireless optical communication, Photonics laboratory at

KAUST pioneered the research in multi-giga-bit-per-second long distance narrow-beam transmission in turbid

and clear water channel using laser-diodes and in-house test-beds. We have demonstrated 20-meter data

transmission at 1.5 Gbps in an outdoor pool, and working towards longer distance transmission for eventual

undersea deployment. For practical turbulent water channel, we collaborated with partners at KAUST on

turbulent channel modeling and modulation schemes for eventual deployment of laser-based communication

system. This talk aims at summarizing the research directions at KAUST Photonics Laboratory, with an

emphasis on laser based, high bitrate systems for both terrestrial and underwater communications.

Biography: Boon S. Ooi is a Professor of Electrical Engineering at KAUST. He is

also the Director of KACST - Technology Innovation Center (TIC) for Solid-State

Lighting at KAUST. Professor Ooi received the B.Eng. and Ph.D. degrees in

electronics and electrical engineering from the University of Glasgow

(Scotland, U.K) in 1992 and 1994, respectively. He joined KAUST from Lehigh

University (Pennsylvania, USA) where he held an Associate Professor position

and headed the Photonics and Semiconductor Nanostructure Laboratory. In

the U.S., his research was primarily funded by the National Science

Foundation (NSF) and Department of Defense and the Army Research Office.

In Saudi Arabia, major funding support for his research is from King Abdulaziz

City for Science & Technology (KACST), Saudi Aramco, and SABIC. His research

is primarily concerned with the study of semiconductor lasers and photonic integrated circuits. Specifically,

he has contributed significantly to the development of practical technologies for semiconductor photonics

integrated circuits and the development of novel broadband semiconductor lasers, multiple-wavelength

lasers, and superluminescent diodes. Most recently, he focuses his research on the areas of GaN-based

nanostructures and lasers for high bitrate optical wireless communication for both terrestrial, and

underwater applications.

Dr. Ooi is a Fellow of the Optical Society of America, a Fellow of the International Society for Optics and

Photonics (SPIE) and a Fellow of the Institute of Physics (UK), and a Senior Member of IEEE.


MORNING SESSION

Overview of Index Modulation for OFDM and Its Applications

Samir Alghadhban

Abstract: Recently, a new family of physical layer schemes called OFDM with Index Modulation have been

proposed. They use the subcarrier index to carry the information, which is analogues to spatial modulation

for multiple antenna systems. In this talk, we will give an overview of the index modulation schemes, research

directions, potential advantages, and applications.

Biography: Dr. Samir Alghadhban received his Ph.D. in Electrical Engineering from

Virginia Tech in 2005. He got his B.Sc and M.Sc. in Electrical Engineering from King Fahd

University of Petroleum and Minerals (KFUPM) in Dhahran, Saudi Arabia in 1997 and

2000, respectively. He is currently an associate professor at the Electrical Engineering

Department and an assistant director at the Office of Planning and Quality at KFUPM.

He participates as a coordinator for the Academic Leadership Center at the Ministry of

Education. His research interests are in wireless communications, MIMO-OFDM

systems, compressive sensing and spectrum sensing.


MORNING SESSION

Realization of All-optical Logic Devices Using Injection Locking in

Semiconductor Lasers

Khurram K. Qureshi

Abstract: Recently, there has been great interest shown in the field of all optical digital information

processing. It is very useful for avoiding the troublesome O-E-O conversion in high speed optical networks. To

achieve this goal, there is a need to develop all-optical logic devices. These devices are considered as the

building blocks for the realization of all-optical computing, switching, multiplexing, and label swapping. In this

seminar, the development of all-optical logic gates based on injection locking technique in semiconductor

laser diodes will be presented.

Biography: Dr. Khurram Karim Qureshi received a BSc degree with honors in

Electrical Engineering from the University of Engineering and Technology, Pakistan, in

1999 and a PhD degree also in Electrical Engineering from the Hong Kong Polytechnic

University in 2006. He is currently an Associate Professor with the Electrical

Engineering Department of KFUPM, where he is doing research on Optical Signal

Processing, Fiber Lasers and Fiber Sensors. He is a senior member of IEEE, USA. He

has published more than 50 journal and conference papers along with two US patents

issued to his credit.


MORNING SESSION

Relay-assisted Underwater Acoustic and Optical Wireless Communication

Suhail Al-Dharrab

Abstract: Underwater wireless communication has recently attracted attention for many civilian and military

applications. Wireless transmission of information under water can be through sound (acoustic) or optical

waves. Although underwater acoustic wireless communication can support long-range transmission, it offers

limited data rates and relatively significant latency. Optical waves are affected by absorption, scattering, and

high level of ambient light limiting transmission range. In this talk, the unique characteristics of underwater

channel is presented. Fundamental performance bounds of relay-assisted multi-carrier underwater acoustic

communication (UWAC) is investigated. The performance of high-speed underwater optical wireless

communication (UOWC) that exploits spatial diversity will be discussed.

Biography: Dr. Suhail Al-Dharrab received his Ph.D. degree in Electrical and

Computer Engineering from University of Waterloo, Waterloo, Canada in 2013. He is

currently an Assistant Professor in the Electrical Engineering Department and

Assistant Director of the Center for Energy and Geo-Processing at King Fahd

University of Petroleum and Minerals, Dhahran, Saudi Arabia. His research interests

span topics in the areas of wireless communication systems, underwater acoustic

communication, digital signal processing, and information theory.


MORNING SESSION

Injection Locked Semiconductor Lasers for Future High Speed Optical

Communications

Mohammed Zahed M. Khan

Abstract: The rising demand of large bandwidth and high speed transmission optical networks to meet the

requirements of ever increasing end users has pushed the paradigm to explore different light sources that

fundamentally defines the capacity of both outdoor as well as indoor network infrastructure. In this talk, we

will discuss the ongoing research of optoelectronics research laboratory to address this future requirements

by employing a new class of broadband quantum-dash laser emitting in L-band regime and assisting injection

locking technique for next-generation networks. In particular, we demonstrated ≥ 176 Gb/s/channel capacity

via a single source. Moreover, we have also employed this technique to demonstrate performance

improvement of visible semiconductor lasers that are now being considered as promising sources for future

lighting as well as high speed indoor visible light communication.

Biography: Dr. Mohammed Zahed Mustafa Khan received his PhD degree in

Electrical Engineering from King Abdullah University of Science and Technology

(KAUST), Saudi Arabia, in 2013 and was a SABIC postdoctoral research fellow in

Photonics Laboratory, KAUST, from 2014-2015. He is currently an Assistant Professor

in Electrical Engineering Department at KFUPM. He has contributed towards the

development of novel broadband semiconductor lasers and super luminescent

diodes. Presently, his research focus is on the application of this new class of lasers in

optical access networks, and performance improvement of visible light

semiconductor lasers for visible light communications.


MORNING SESSION

Visible Light for Multi-User Communication Systems

Osama Amin

Abstract: Visible light communication (VLC) is a promising technology that can support high data rate services

for emerging wireless communication networks in indoor and outdoor scenarios. A multiple user downlink

VLC system is considered using time division multiple access (TDMA). The resource allocation problem is

studied for both indoor and outdoor VLC scenarios by tuning the allocated power and/or time of the TDMA

system to improve the system performance. Visible light systems support two different services: optical and

communication, which have different design criteria. Firstly, for indoor VLC scenario, the communication

design objective is to maximize the spectral efficiency (SE) using the available energy budget while satisfying

the communication quality-of-service. To meet the optical design criterion, an illumination constraint is

imposed on the average optical intensity. Secondly, for outdoor VLC scenario, the optical design objective is

to maximize the illumination, while the communication system aims to maximize the SE. The design

objectives are shown to be conflicting; therefore, a multi objective optimization is formulated to control the

design priority of each metric obtaining the Pareto front relation between both objectives.

Biography: Osama Amin (S’07–M’11–SM’15) joined the Computer, Electrical, and

Mathematical Sciences and Engineering (CEMSE) Division, of the King Abdullah

University of Science and technology (KAUST), as a postdoctoral fellow in 2014. He

obtained the Ph.D. degree in electrical and computer engineering from the University

of Waterloo, Waterloo, ON, Canada in 2011. His general research interests lie in

communications systems and signal processing for communications with special

emphasis on wireless applications. Specific research areas include green

communications, cognitive radio, and optical wireless communication. Dr. Amin is

currently an associate editor of the IEEE Communication Letters. He has served as a

Technical Program Committee Member of the ICC, GLOBECOM, the IEEE VTC, the

CROWNCOM, the PIMRC, and the ISSPIT conferences. He co-organized and co-chaired several IEEE workshops

related to Green communications, next generation wireless communications.


MORNING SESSION

Robust Linear Transceivers for Multi-stream MU-MIMO Visible Light

Communication

Houssem Sifaou, Abla Kammoun, Ki-Hong Park, and Mohamed-Slim Alouini

Abstract: Visible light communication (VLC) is recognized as a promising technology on complement existing

wireless communication existing wireless communication systems due to its main advantages such as ease of

deployment, low cost and large unlicensed bandwidth. This work considers the precoding and receiver design

of a multi-user multiple-input-multiple output (MU-MIMO) VLC system. Two major concerns need to be

considered while solving such a problem. The first one is related to the inter-user interference, basically

inherent to our consideration of a multi-user system, while the second results from the users’ mobility,

causing imperfect channel estimates. To address both concerns, we propose robust precoding and receiver

that solve the max-min SINR problem. The proposed robust design is studied under different conditions, and

is shown to achieve higher gain than its non-robust counterpart.

Biography: Houssem Sifaou received the engineering degree in signal and systems

from Tunisia Polytechnic School (TPS), Tunis, Tunisia, in 2014 and the MS degree in

Electrical Engineering from King Abdullah University of Science and Technology

(KAUST), Thuwal, KSA, in 2016. He is currently a Ph. D. candidate in the Electrical

Engineering program at KAUST. His research interests include asymptotic

performance analysis, massive MIMO, visible light communication, random matrix

theory applications in signal processing and wireless communications.


MORNING SESSION

Network-Coded Femtocaching: Improved Macrocell Offloading for Future

Wireless Networks

Y. N. Shnaiwer, S. Sorour, P. Sadeghi, N. Aboutorab, T. Al-Naffouri, and Samir Al-Ghadhban

Abstract: Femtocaching has been recently proposed to improve Macrocell offloading in next generation

wireless networks. This technique is based on adding high storage capacity to femtocells, thus allowing them

to store popular files and then transmitting them directly when requested by the clients. In this work, we

investigate the potential of utilizing opportunistic network coding (ONC) to improve Macrocell offloading in

femtocaching-assisted wireless networks.

Biography: Yousef N. Shnaiwer received the BSc degree in telecommunications

engineering from Palestine Polytechnic University, West Bank, in 2011. He received

the MSc degree in telecommunications from the Electrical Engineering Department,

King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia, in 2014. He

is currently a PHD student at KFUPM. His research interests include network coding,

femtocell networks, and cognitive radio networks


AFTERNOON SESSION

External Injection Locked Red and Blue Semiconductor Lasers Enabling High

Speed Visible Light Communication

Mohamed A. Shemis, Md. H. M. Shamim, Z. Zhang, C. Shen, Hassan M. Oubei, Tien Khee Ng, M.-

Slim Alouini, Boon S. Ooi, and M. Zahed Mustafa Khan

Abstract: Visible light communication has recently evolved as a substitute for typical Wi-Fi networks for

meeting the growing demand of data rates at user end besides simultaneously providing lighting. Hence, in

this work, we intend to improve the performance of visible laser diodes employing assisting external injection

locking technique that would enable reaching higher modulation bandwidths and thus higher data rates, as a

complementary solution besides optimizing the device design and growth technologies. Through various

characterizations on the injection locked blue laser diode, we observed an improvement in laser beam

coherency. Besides, we also show the results of improved communication performance for the case of red

lasers in terms of BER and eye diagram.

Biography: Mohamed A. Shemis received his dual B.S. degree in Electrical Engineering and

Physics, and M.S. degree in Electrical Engineering from King Fahd University of Petroleum

and Minerals in 2015 and 2017, respectively. He is currently a PhD student at KFUPM and

working on improving the performance characteristics of near infrared and visible lasers

for high speed optical communication. He has so far published 11 journal and conference

papers.


AFTERNOON SESSION

L-band InAs/InP Quantum-dash Laser for Next Generation WDM Passive

Optical Access Networks

M. T. A. Khan, Emad Alkhazraji, A. Ragheb, H. Fathallah, K. K. Qureshi, S. Alshebeili, and M. Zahed

Mustafa Khan

Abstract: In this work, we demonstrate the viability of deploying broadband quantum-dash lasers as unified

upstream and downstream transmitters in next generation wavelength division multiplexed based passive

optical networks. By employing a single far L-band external injection locked single ~1621 nm sub-carrier, we

successfully transmitted 100 Gb/s and 128 Gb/s dual–polarization quadrature phase shift keying signal over

10 km single mode fiber and back-to back channels. Besides, an injection locked mode wavelength tunability

of ~23 nm, encompassing ~50 sub-carriers, is accomplished.

Biography: Emad Alkhazraji received his B.Sc. and M.Sc. in Electrical Engineering from

King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia, in

2014, and 2016, respectively. He worked as a research assistant in Electrical

Engineering Department at KFUPM from 2014-2016 and later joined as a lecturer in

Electrical and Electronics Engineering Technology Department, Jubail Industrial College

(JIC), Jubail. He is also a part-time Ph.D. student of Electrical Engineering in KFUPM. His

main areas of research interest are photonics, quantum-dash structures, and their

application in optical communication systems with over 15 publications.


AFTERNOON SESSION

Characterization of Self-seeded Visible Light Semiconductor Laser Diodes

for Future Visible Light Communication

Md. H. M. Shamim, M. A. Shemis, Chao Shen, Hassan M. Oubei, Tien Khee Ng, Boon S. Ooi,

and M. Zahed Mustafa Khan

Abstract: Visible light laser diodes are now being considered as the solution for simultaneous

illumination and communication, thanks to their high quantum efficiency and data transmission capacity

compared to LEDs. In this work, we intend to improve the laser quality via cost-effective and energy

efficient self- injection locking scheme rather than external locking, enabling high data rate visible light

communication, and thus addressing future green communication and internet connectivity as well as

efficient illumination for a sustainable global society. In particular, effect of optical feedback from a

partially reflective mirror on the device performance is characterized for green lasers. Our preliminary

results have shown linewidth reduction and modulation bandwidth enhancement in all the lasers; the

two key parameters that enables high speed communication.

Biography: Md. Hosne Mobarok Shamim received his B.Sc. in EEE degree from

Islamic University of Technology (IUT), a subsidiary organ of the Organization of

Islamic Cooperation (OIC), Dhaka, Bangladesh. He is currently a full-time M.S

student at King Fahd University of Petroleum and Minerals (KFUPM), Dhahran,

Saudi Arabia. His research interest includes visible light communication, solid state

lighting, photonics and optical communication.


AFTERNOON SESSION

Underwater Wireless Communication – Experiments and Channel

Modeling

Hassan Makine Oubei, Emna Zedini, Rami T. ElAfandy, Abla Kammoun, Mohamed Abdallah,

Tien Khee Ng, Mounir Hamdi, Mohamed-Slim Alouini, and Boon S. Ooi

Abstract: The reliability of underwater wireless optical communication (UWOC) systems is highly

affected by underwater optical turbulence (UOT). UOT is the result of several phenomena including

temperature fluctuations, salinity variations as well as the presence of air bubbles in seawater that

affects the propagation of optical signals. Statistically modeling and charactering the optical channels is

very crucial. We use the Exponential-Generalized Gamma (EGG) statistical distribution to describe laser

beam scintillations in fresh and salty water channels of different turbulence conditions. The EGG

distribution perfectly fits the measured data under all channel conditions emulated.

Biography: Hassan M. Oubei is a researcher at King Abdullah University of

Science and Technology (KAUST). His research interest includes underwater

wireless optical communication systems, underwater channel modeling,

indoor/outdoor visible light communication & illumination systems.


AFTERNOON SESSION

Wireless Optical Underwater Video System

Abdullah Al-Halafi, Hassan Makine Oubei, Boon S. Ooi, and Basem Shihada

Abstract: We experimentally demonstrate high-quality real-time video streaming over an underwater

wireless optical communication (UWOC) link up to 5 m distance using phase-shift keying (PSK) modulation

and quadrature amplitude modulation (QAM) schemes. The communication system uses software defined

platforms connected to a commercial TO-9 packaged pigtailed 520 nm directly modulated laser diode (LD)

with 1.2 GHz bandwidth as the optical transmitter and an avalanche photodiode (APD) module as the

receiver. To simulate various underwater channels, we perform laboratory experiments on clear, coastal,

harbor I, and harbor II ocean water types. The measured bit error rates of the received video streams are 1.0

x 10-9 for QPSK, 4-QAM, and 8-QAM and 9.9 x 10-9 for 8-PSK. We further evaluate the quality of the received

live video images using structural similarity and achieve values of about 0.9 for the first three water types,

and about 0.7 for harbor II. To the best of our knowledge, these results present the highest quality video

streaming ever achieved in UWOC systems that resemble communication channels in real ocean water

environments.

Biography: Abdullah Al-Halafi received his B.Sc. in Electrical Engineering from King

Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia, in 2003 and his

M.Sc. in Electronics and Electrical Engineering from the University of Glasgow

(Scotland, UK) in 2006. Currently, he is pursuing his PhD. At King Abdullah University of

Science and Technology (KAUST), Saudi Arabia. Prior to KAUST, he worked on

engineering design and projects management of various large scale communications

and control systems projects at SABIC, ABB, and Saudi Aramco, Saudi Arabia. His

research interests include underwater wireless optical networks, wireless sensor

networks, and queuing systems.


AFTERNOON SESSION

Semi-polar GaN Laser and Superluminescent Diodes for White Light

Communications

Chao Shen, Changmin Lee, John T. Leonard, Arash Pourhashemi, Tien Khee Ng, Shuji Nakamura,

James S. Speck, Steven P. DenBaars, Ahmed Y. Alyamani, Munir M. El-Desouki, and Boon S. Ooi

Abstract: The unregulated visible light spectrum has recently been harnessed for energy-efficient, ultra-large

bandwidth, and secure data transmission. For advancing the high-power, high-speed light-emitter

architecture, compact and energy saving laser-diode based devices are attractive for free-space and

underwater visible light communication (VLC), in place of LEDs. The presentation features our recent

investigations: 1) A small footprint integrated waveguide-modulator / laser-diode (IWM-LD) on �2021� semipolar GaN substrate, showing a high modulation efficiency of 2.68 dB/V and a -3dB bandwidth of ~1 GHz.

2) Vertical-cavity surface-emitting lasers (VCSELs) based on nonpolar InGaN/GaN quantum-wells and a tunnel-

junction intracavity contact for VLC. 3) A semipolar InGaN-based blue-emitting super luminescent diode (SLD)

as a droop-free and speckle-free light source, combining the advantages of both LEDs and LDs. 4) Novel

single-crystal YAG and perovskite based phosphor material for white light VLC. The design, fabrication, and

characterization of III-nitride laser based photonic integration and emerging color converters for lighting and

data communication will be discussed. The results suggest that the laser-based solution is a promising

approach towards next generation high-brightness smart lighting and high-speed visible-light

communications.

Biography: Chao Shen is currently a researcher at KAUST Photonics Laboratory. He is

also with KACST Technology Innovation Center (TIC) for solid-state lighting at KAUST.

Currently, he has co-authored 20 journal papers, including Optics Express, Optics

Letters, ACS Photonics, Nano Letters, etc. In addition, he published 20 conference

papers, such as IEDM, CLEO, IPC, and ICNS, and has five US patents pending. He

received PhD in Electrical Engineering at KAUST and BSc. in Materials Physics at

Fudan University. Chao is a member of IEEE Photonics Society, IEEE Electron Device

Society, OSA and SPIE. His research interests include III-nitride laser diodes, GaN

optoelectronics, laser based solid-state lighting, visible light communication,

underwater wireless optical communication, photonic integrated circuits, micro-LEDs, and VCSELs.

5th kaust-kfupm photonics workshop · 0920 – 0940 prof. samir alghadban, kfupm overview of index...

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