Title
Recent advancement in graphene-based photo-detector from near to far infra-red wavelength
Abstract
Graphene photodetector has gathered a lot of interest recently as a main component in photonics related industries such as telecommunication, optical sensor, medical imaging etc. This is due to the high mobility carrier and zero band-gap characteristic of graphene that give them advantage over conventional silicon- or germanium-based devices. In this review, recent studies of graphene enabled photodetectors at infra-red wavelengths are discussed and compared. The mechanism of detections and photodetector efficiency are also analyzed for different application purposes. Several methods of producing graphene are discussed to meet the needs of photodetectors fabrication. Waveguide with embedded photonic crystal are suggested to control the wavelength selection at infra-red region for potential photonics application.
Biodata
His expertise are in photonic crystal (PhC) and semiconductor nano-fabrication processes. He has obtained his PhD from University of Glasgow, UK in Silicon based nano-photonics waveguide working with Prof. Richard De La Rue. He has joined Centre for Communications Research (CRC), University of Bristol from 2008 to 2012 as a postdoctoral researcher working with Prof Martin J. Cryan. His main research in Bristol was in Photonic Crystal (PhC) Gallium Nitiride Based Biosensors. He is a member of IEEE and OSA. His current research interest are in Photonic Crystal (PhC) based devices, Phononic Crystals, Non-linear optics and 2D material based device. He is currently working on graphene based photodetectors and silicon nano-probe for sensing.

Title
Advanced Functions for Signal Processing and Sensing Harnessing on-chip SBS
Abstract
Harnessing SBS on cm-scale waveguides via photonic integration is of critical importance for practical devices such as tunable RF filters, frequency combs, photonic memory and pure microwave sources. Monitoring and characterizing the opto-acoustic properties of these waveguides is therefore crucial for maximizing the SBS performance. In our work, we demonstrate a distributed measurement system based on Brillouin optical correlation domain analysis (BOCDA) technique with record spatial resolution below the mm-scale to ensure the quality of integrated photonic waveguides. We can pick up small fabrication variations using this approach and show that our waveguides are highly homogeneous, even around the bends area.
Biodata
Ms Atiyeh Zarifi received B.Sc. in Electronics Engineering from Shahid Beheshti University in Tehran, Iran and MEng degree in Telecommunications Engineering at the University of Malaya (UM), Kuala Lumpur, Malaysia in 2009 and 2012 respectively. She is a Ph.D. student in CUDOS at the school of Physics, University of Sydney, Australia since 2015. Her research area is hybrid integrated photonic waveguides and stimulated Brillouin scattering (SBS) for sensing applications.

Title
Millimeter- and terahertz-wave radio systems enabled by photonics technology for 5G/IoT and beyond
Abstract
In upcoming 5G era, throughput and capacity of connections will be drastically increased as comparable to an optical network. In the scenario, seamless convergence between radio and optical technologies is a key for realization of low latency and high-reliable networks. In the talk, we discuss a radio over fiber technology utilized as a seamless conversion technique between optical signals and millimeter-wave signals, even terahertz-wave signals.
Biodata
Dr. Atsushi Kanno received B.Sci., M.Sci., and Ph.D. degree in science from the University of Tsukuba, Japan, in 1999, 2001, and 2005, respectively. In 2005, he was with the Venture Business Laboratory of the Institute of Science and Engineering, University of Tsukuba. In 2006, he joined the National Institute of Information and Communications Technology (NICT), Japan. His research interests are microwave/millimeter-wave/terahertz photonics, ultrafast optical and radio communication systems, lithium niobate optical modulators, and ultrafast phenomena in semiconductor optical devices. He is a member of the Institute of Electronics, Information and Communication Engineers (IEICE), the Japan Society of Applied Physics (JSAP), the Laser Society of Japan, and the Institute of Electrical and Electronic Engineers (IEEE).

Title
Opto-acoustic chemical sensor based on forward Brillouin scattering in optical fiber
Abstract
Brillouin scattering is well-known for providing distributed measurements in the field of optical fiber sensing. For the conventional stimulated Brillouin scattering, the sensing capability is nevertheless limited to temperature and mechanical strain in the core of an optical fiber. On the other hand, forward Brillouin scattering (FBS), due to the participating transverse acoustic waves, can be used to directly measure the mechanical properties of the material that surrounds a standard telecom fiber. We review our work on harnessing FBS to extract the acoustic impedances of different liquid materials. The acoustic impedance mismatch between silica optical fiber and its surroundings determines the decay rate or the corresponding resonance linewidth of the transverse acoustic modes. We address the measurement with both time and frequency domain techniques, demonstrating accuracy of measurements up to 95%. This work could be potentially extended to realize fiber based ultrasonic chemical analysis.
Biodata
Desmond Chow received the B. Eng degree in electrical engineering and the M. Sc. Eng degree in photonics from University of Malaya, Malaysia, in 2011 and 2014. He is currently pursuing the Ph. D. degree in photonics at Ecole Polytechnique Fédérale de Lausanne (EPFL), supervised by Prof. Luc Thévenaz. His research interests include opto-acoustic effects, distributed optical fibre sensors, nonlinear fiber optics, plasmonic biosensors and photonic crystal design.

Title
Simulating Annual Energy Yield of a Rotationally Asymmetrical Optical Concentrator
Abstract
 This paper simulates the annual energy yield of a concentrator called the rotationally asymmetrical dielectric totally internally reflective concentrator (RADTIRC). One specific design of the RADTIRC is assumed to be installed in Berlin/Brandenburg, Germany. Simulation and experimental work has been carried out to determine the optical concentration gain under diffuse radiation. Based on the analysis, it was found that the yearly energy yield was increased by a factor of 2.29 when the RADTIRC-PV module was used when compared with the non-concentrating PV module.
Biodata
Dr Firdaus Muhammad-Sukki received his MEng degree in Electrical and Electronic Engineering from Imperial College, London in 2006 under the Yayasan TM scholarship. In 2009, he received studentship awards from Glasgow Caledonian University (GCU), Scottish Funding Council (SFC) and Yayasan TM to pursue his postgraduate study in Glasgow Caledonian University from which he obtained his PhD in 2013. Dr. Muhammad Sukki is a Chartered Engineer, a member of the Institution of Engineering and Technology (IET) and an associate of the City and Guilds, London (ACGI). Dr. Muhammad Sukki has been an active researcher and is currently a Lecturer in Robert Gordon University, United Kingdom. His research interest is in designing optical concentrator, which can be used in many applications including creating a low cost solar photovoltaic system, illumination, heating and cooling of buildings, energy harvesting, desalination, medical devices, waste water treatment etc. On top of that, Dr. Muhammad Sukki carried out a number of non-technical research including market trend and financial analysis related to renewable technologies for countries such as Malaysia, Japan, Nigeria, Cameroon and United Kingdom. He has published numerous articles in high impact factor journals (e.g. Nature, Renewable & Sustainable Energy Reviews, Applied Energy, Energy, Renewable Energy, Energy Policy etc.), as well as presenting in various conferences related to his area. Prior to joining the academia, he was a communication engineer in Malaysia’s largest telecommunication company.

Title
Lithium Niobate on Insulator (LNOI) channel waveguides for Integrated Optical Engineering
Abstract
LNOI possesses high refractive index contrast and also depicts better electro-optic & acousto-optic effects. Optical add drop multiplexer (OADM) deviceis important in optical communication networks to process the signals in optical domain. With this work, An OADM using the optical microring resonator using the Lithium Niobate on Insulator (LNOI) channel waveguides has been proposed. The article shall also discuss about the higher order (eight channel) OADM based onring resonator using LNOI channel waveguides producing a data rate of 10 Gbps suitable to enhance the performance of a DWDM-GPON network.
Biodata
Dr. Ghanshyam Singh, a recipient of Distinguished Lecturer award from IEEE Photonics Society for term 2017-18 works with Malaviya National Institute of Technology Jaipur since 1999. He had been a visiting research scholar/visiting professor in the area of Photonic Switching and Networks for various periods at the Department of Physics, Herriot Watt University, Edinburgh, UK (March 2009), the Institute of Photonics, University of Eastern Finland, Joensuu, Finland (January – June 2010) under the CIMO Fellowship (Govt. of Finland) and Department of EEE, Keio University, Hiyoshi Campus, Yokohama, Japan (October 2013). Dr. Singh has extensive teaching, research and sponsored R&D experience (for various funding agencies from India and abroad) on many aspects of Optical Communication and Photonics Engineering and has published and reported over 120 research papers/review articles in peer reviewed International journals/conferences. He has delivered expert talks on related research topics during various events held in India and abroad (including the Germany, Finland, Japan, Ukraine, Belarus, China, Poland, Italy etc.). Dr. Singh is a senior member of OSA, IEEE and Fellow of OSI and IETE. He is also a life member of other professional societies including the SPIE, ISTE, IE (India), etc. Dr. Singh has been engaged with joint research projects with partner researchers from Keio University (Japan), University of Vienna (Austria), Lviv National Polytechnic University, Lviv (Ukraine) and Cairo University (Egypt). His current research interest includes Micro and Nano-structured photonic devices for integrated Photonics, Plasmonics, Photonic Sensors, etc.

Title
The Study of Tunable Energy Band Gap of Graphene layer
Abstract
The electronic properties of the single and bilayer graphene have been carefully investigated by the principle of Hamiltonian tight binding model. We find that the energy band gap of bilayer graphene is tunable from 0 to 0.29 eV under the applied electric field. Using the energy band gap analysis from Hamiltonian tight-binding simulations, we also concluded that the charge distribution in inter and intra-graphene layer determine the energy band gap structure. Based on the applied mechanism, the bandgap of bilayer graphene can be engineered under DC and low amplitude electric filed potential for the optical excitation.
Biodata
Gunawan Witjaksono received the B.S. (magna cum laude) and M.S. degrees in electrical engineering from Michigan Technological University, Houghton, MI, in 1992, 1994, respectively, and the Ph.D. degree in Electrical and Computer Engineering from the University of Wisconsin-Madison in 2002. From 1994 to 1996, he worked for National Aeronautics and Space Agency in Indonesia. In June 2002, he joined Denselight Semiconductors Pte Ltd in Singapore, where he developed high-speed, long wavelength, distributed feedback lasers. Following that, he was with Finisar Malaysia to develop uncooled, high-speed optical transceiver; Later he joined Department of Electrical Engineering, University of Indonesia in 2005 to 2007 before joining MIMOS when he held various key positions as Principal Researcher, Director of Research and Sensor System Architect until 2016. He is currently a Lecturer at Universitas Bina Nusantara (BINUS), an Associate Professor at Electrical and Electronics Department, Universiti Teknologi PETRONAS and certified Information System Auditor (CISA) holding a Professional Engineer (IPM).

Title
From Laboratory to Spin-off Company
Abstract
The talk will deliberate on the journey from idea to commercialization in the form of a spin off company, a personal account of the speaker. In particular, the speaker will share his journey in carrying out research in specialty optical fiber for radiation dosimetry and commercializing them. Besides this, he will be deliberating on the current practices in MMU related to the commercialization of research. Besides this, the speaker will also share some of the important attributes of a researcher and research team in order to have a successful pursuit in accomplishing high impact research and translating research to application through commercialization and entrepreneurship.
Biodata
Prof. Ir. Dr. Hairul Azhar Abdul Rashid is a professor at the Faculty of Engineering, Multimedia University, Malaysia. He is currently the Vice President (Research and Innovation) responsible for strategic research planning, management, innovation management, commercialization and entrepreneurship development.

Title
High Bandwidth Simplicity VCSELs
Abstract
We review vertical-cavity surface-emitting lasers (VCSELs) grown by metal-organic vapor phase epitaxy on gallium-arsenide substrates with simplified epitaxial material designs. At an ambient of roughly 300 Kelvin we achieve small-
signal modulation bandwidths exceeding 20 gigahertz for our conventional single-optical-cavity 980 nanometer VCSELs with oxide aperture diameters of an estimated 17 micrometers with maximum multiple-mode static optical output powers at roll-over of 28 milliwatts. Sister VCSELs with oxide aperture diameters of about 2 micrometers at about 300 Kelvin achieve record small-signal modulation bandwidths of 34 gigahertz and maximum single-mode static optical output powers of 4 milliwatts.
Biodata
 J. A. Lott is a Professor at the Technische Universität Berlin in Berlin, Germany. He was raised in Hawaii and California. He received the B.S. degree in electrical engineering and computer sciences from the University of California at Berkeley in 1983 and the Ph.D. from the University of New Mexico, USA in 1993. He performed research at Sandia National Laboratories in Albuquerque, New Mexico on quantum optoelectronic materials, devices, and systems from 1988-1993. While on separate sabbaticals he served as a visiting scientist at the NEC Optoelectronics Research Laboratories in Tsukuba, Japan in 1995, and later at the Samsung Electronics Company in Suwon, Republic of Korea in 1996.

Title
Antennas for photons: light-matter coupling at nanoscale
Abstract
Plasmonic nanoantennas sustain an extraordinary ability to concentrate light in subwavelength spatial domains. This confinement is accompanied with a corresponding enhancement. Hence, unprecedented light-matter coupling strength canbe achieved to quantum emitters positioned near the focal point. Thus, utilization of nanoantennas holds promise for rapid addressing of chip-integrated quantum emitters with light, or for a significant boost of performance of such  quantum emitters as nonclassical light sources. Moreover, nanoantennas can be exploited to engineer the emission characteristics, or even quantum properties of light, such as statistics or degree of entanglement. To discuss these applications, we have developed a framework that treats nanoantennas as open cavities of arbitrary spectra, coupled to quantum emitters characterized by a configuration of discrete energy levels. In this way, we drop the usual, but often unrealistic assumption of a single-Lorentzian nanoantenna spectrum. In this contribution we introduce the method and apply it to several example designs tailored for specific functionalities.
Biodata
Karolina Słowik is an assistant professor at the Institute of Physics, Nicolaus Copernicus University (NCU). Her doctoral studies at NCU combined problems of quantum optics and atomic physics. As a postdoc she has joined Falk Lederer’s team at the University in Jena, Germany, and later Carsten Rockstuhl’s group at Karlsruhe Institute of Technology, to explore quantum aspects of nanophotonics. Back at NCU Karolina Słowik leads a group focusing on theoretical investigations of light-matter interactions in engineered environments, ranging from optically dressed media to adjacent nanoplasmonic devices.

For details please visit fizyka.umk.pl/~karolina

Title
Acoustic Wave Management with Brillouin Scattering
Abstract
We study Brillouin scattering in silica microwires. In the presence of multiple discrete acoustic modes, the Brillouin spectrum in silica microwires is very different from standard optical fibers. The possibility to interact with those acoustic modes opens a new range of experiments that we investigate. Strong couling, acoustic lifetime management and Fano-like resonance phenomena will be presented.
Biodata
Born in Paris 1979, Kien Phan Huy obtained his M.E in 2002 in microelectronic and optoelectronic at Grenoble Institute of Technology. He received the Ph D. from Grenoble Institute of Technology after working at IMEP-LHAC laboratory on silicon microdisk resonators. He went through a post-doctoral research experience at Université libre de Bruxelles in Belgium, in OPERA lab working on entangled photons sources. He has been working on whispering gallery mode resonators, Tapered fibers, Photorefractive solitons, entangled photon sources, frequency bin entanglement and Brillouin scattering.

Title
High temperature stable polymer planar waveguide Bragg grating sensors
Abstract
We review our work on polymer planar waveguide Bragg grating (PPBG) sensors and demonstrate their potential for high temperature applications. Our sensors are fabricated with a rapid UV-based single writing step (SWS) technique, which allows for the simultaneous inscription of an integrated waveguide and a Bragg grating in polymer planar substrates. The developed SWS technique is applicable to different polymer materials with different material properties and allows a free selection of the planar substrate’s geometry. In this contribution, we demonstrate the SWS technique and report on different PPBG sensor designs and application scenarios for high temperature sensing of up to 160 °C as well as temperature referenced strain sensing.
Biodata
Manuel Rosenberger received the B. Eng. degree in mechatronics and M. Eng. degree in electrical engineering from the University of Applied Sciences in Aschaffenburg in 2010 and 2011, respectively. Since 2011 he is a research associate at the applied laser and photonics group of the University of Applied Sciences in Aschaffenburg and his current research interests are integrated polymer optics and optical sensing.

Title
Anti- Burst flooding attack Model in Optical Burst Switching Network
Abstract
Optical burst switching (OBS) networks have been attracting much consideration as a promising approach to build the next generation optical Internet. However, a Burst flood attack is considered to be one of the key issues that has a negative impact on the Quality of Service (QoS) in OBS network that cause “burst contention”. Burst contention can cause a significant burst loss in network resources, leading to a decreased QoS. Current techniques that deal with Burst flood attack usually suffer from low accuracy in detecting the misbehaving nodes. In this paper, a novel model that can detect and reduce the Burst flood attack in OBS networks will be introduced.  The model will classify the ingress nodes to one of four different classes based on cumulative behaviour. The model has been implemented and verified using a modified NCTUns network simulator. The results analysis shows that the model enhances the QoS by reducing the packets lost and improving the burst transmission which will result to increase the nodes’ performance.
Biodata
Dr. Mohammed Al-Shargabi obtained his Ph.D. degree in Computer Science in 2011 from University Technology Malaysia. He is working as assistant Professor and  College Coordinator for Academic Affairs in the college of Computer Sciences and Information System- Najran University Kingdom of Saudi Arabia.   He Has more than 10 years teaching experience at university level in different environments and more than 20 research publications in the field of computer Networks. His current research interest is Optical Network Quality of Service and Security. He is ABET IDEAL Scholar and Expert in Learning Outcomes Assessment.

Title
Step Index Optical Fibre for All-Fibre UV Generation
Abstract
We review our work in UV generation in step-index optical fibres via nonlinear optical processes and Gadolinium(Gd)-doped optical fibres. Considerations on propagation loss are first discussed, as well as the selection and limitations of UV generation and transmission in step index optical fibres. The generation of UV wavelengths via two main nonlinear processes, namely, third harmonic generation (THG) and four wave mixing (FWM) in optical microfibres are then discussed, with an emphasis on the phase matching mechanism and initial calculations for theoretical efficiency. Next, theoretical limitations of these processes due to intrinsic surface roughness in optical microfibres are presented. Finally, the use of Gd-doped silica fibres for UV generation at the 310 nm region is demonstrated.
Biodata
To be Updated

Title
Multielement nano-engineered glass based Er-doped optical fibers for broadband optical communication system and LIDAR applications
Abstract
Erbium doped new material design based optical fiber based on multielement nano-engineered glass structure has been attracting as a promising candidate to build the next generation broadband optical communication system and LIDAR applications. This work is focused on the development of Erbium (Er) doped multielement nano-engineered Scandium-Phospho-Yttria-Alumina-Silica (SPYAS) glass-based optical fiber through a suitable thermal annealing of pristine preform. The results suggest that incorporation of Er into nano-phase-separated crystalline scandium-yttria rich particles offer a flat-gain spectrum about 38.675 dB with variations of less than ±0.70 dB over the whole range spanning 1530 to 1590 nm to be useful in broadband optical fiber communication systems. On the other hand, another new class of fiber : erbium doped multielement zirconia-yttria-allumino silicate (ZYA-EDF) to be used as a gain medium for an ultra-fast femtosecond fiber laser mode-locked by graphene oxide (GO) saturable absorber. The laser generated 400 fs soliton pulses with 8.5 nm optical bandwidth centered at 1561 nm with 49.5 MHz repetition frequency. The use of such new class of nanoengineered fiber allow to achieve very low pumping threshold as a femto second laser source for LIDAR application
Biodata
Dr. Mukul Chandra Paul obtained his PhD degree in Fiber Optics from the Jadavpur University in 2003. At present he is working as principal scientist at the Fiber Optics and Photonics Division, CSIR-Central Glass & Ceramic Research Institute, Jadavpur, Kolkata-32 (INDIA) . His research work deeply focused on the design of material composition of the doping host of metal nano-particles along with rare-earths through different material and optical characterization tools for development of various type of specialty optical fibers based on MCVD with solution doping technique which use as a heart of fiber optic based devices such as fiber laser, optical amplifier , broad-band optical source and sensor to improve their respective optical performances. At present he is involved for development of high power optical amplifier for CATV and free space communication system , Rrare-earths doped multicore fiber as well as very narrow line width based DFB fiber laser for Hydrophone and LIDAR through participation of some prominent industrial partners in the area of photonics. Recently focused another important area about the development of suitable optical fiber which will be used as fiber based saturable absorber for mode-locked and Q-switching fiber laser at 1550nm. He received a number of prestigious awards / recognitions including young scientist award under UK-India networking research programme (2003), BOYSCAST Fellowship from the department of Science and Technology (2005), CSIR Technology Award (2012), DST-UKIERI Award (2013), CSIR Technology Award for Innovation (2015), Indo-Russian (RFBR) Collaborative Research Grant-2016, Indo-Portugal (FCT) Collaborative Research Grant-2017 etc. He is a OSA senior member along with membership of ACS, IEEE and life member of MRSI and ICS. He is an editorial board member of new journal of glass and ceramics (NJGC), International journal of advanced nanomaterials, International journal of materials science research and journal of materials science and engineering progress. He has published more than 200 papers in peer-reviewed journals and Conferences. He also published 7 Book chapters and edited two books on Fiber Laser. He holds 7 US patents and filed 4 Indian patents. He is involved to several collaborative projects with different countries such as UK, Russia, Portugal, Mexico, Malaysia, etc.

Title
Power Consumption Modeling In Integrated Optical-Wireless Access Network
Abstract
Access segment of both optical and wireless networks are well known for their domination over total network power consumption. Therefore, the study on energy consumption particularly in the integrated optical-wireless access network is crucial as the energy consumption issue is increasingly vital nowadays. Existing works to date largely address the physical characteristics of the integrated devices and layer 2 and 3 algorithm where the study in power consumption modeling is often ignored. This work hence focuses on developing a power consumption model for the integrated optical-wireless access network and investigating the energy efficiency of such network. Gigabit Passive Optical Network (GPON) as an optical backhaul and Worldwide Interoperability Microwave Access (WiMAX) and Long-Term Evolution (LTE) with femtocell application for the wireless network were considered. Firstly, the power consumption model of the whole integrated network involving Optical Line Terminal (OLT) and Integrated ONU-BS (IOB) were developed. Then, the power consumption behavior of Optical Network Unit (ONU) under different traffic loads was investigated which will be used later in power consumption modeling of the integrated access network. Approach have been done by focusing on monitoring and analyzing the power consumption of ONU using real GPON testbed. An empirical approach have been proposed to characterize the power consumption of the ONU and to develop the power consumption model of ONU based on experimental results. This is followed by the extensive analyses that were done to investigate the impact of various parameters such as split ratio, Femtocell Base Station (FBS) cell range, broadcast factor and modulation and coding scheme into the total network power consumption and energy efficiency. It was found that, GPON-LTE has the worst energy efficiency performance compared to GPON-WiMAX even though it offers the highest data rates. The study was further extended by including the study in energy saving where sleep mode techniques have been applied (i.e. power shedding for the ONU and idle mode procedure for FBS) based on the user behavior from the traffic profile pattern in Cyberjaya municipal broadband access networks. The energy saving analysis shows further significant improvement in power consumption performance of the integrated access network of 15% in energy saving.
Biodata
Dr. Nadiatulhuda Zulkifli is currently a Senior Lecturer at the Department of Communication Engineering, Universiti Teknologi Malaysia. Her current research interests include optical communication and networking, and optical access networks, specifically in the allocation of bandwidth resources in the optical access and core domains. In optical core network domain, her research work focuses on routing and wavelength assignment algorithms for network that run on mixed services. In the access network domain, the focus is on the dynamic bandwidth allocation algorithms, energy efficiency and physical layer design based on different modulation formats and power budgets. She has published in nearly 40 journals and conferences, and 2 invited book chapters. Her h-index is 5. In 2008, she received the Best Paper Award (Optical Track) in the IEEE International Conference on Broadband Networks (BROADNETS), London, UK.

Title
Optical Characterisation of LEDs with radiation effects
Abstract
Light emitting diodes (LEDs) is of great interest owing to much needs of LED as a lighting source in space, military, and extreme industrial environments. Effect of electron and neutron radiation on LEDs are selected to be investigated owing to their abundance in extreme radiation environment. The presentation will discuss on the degradation effects of the electrical and optical properties of LEDs subjected to electron and neutron radiation. The focus will be on the device characterizations such as electroluminescence measurements, integrated electroluminescence, leakage current mechanism, capacitance-voltage measurements, deep carrier trapping and transmutation doping effects. The existence of leakage current will indicate the extent of the device quality and reliability. The degradation of optical power is often linked to the existence of leakage current. Both electrical and optical characterization is very much related, understanding one effect may explain the others. Therefore, it is important to understand both the electrical and optical characterization of these LEDs in order to improve its technology and their proper usage in nuclear radiation environment.
Biodata
To be Updated

Title
Deuterium Passivated Amorphous Silicon on Insulator: A Robust Nonlinear Photonic Platform
Abstract
All-optical signal processing is expected to contribute significantly toward increasing the efficiency of next generation telecommunication networks. To fully exploit the possibilities, realization of efficient Kerr nonlinearities in an integrated platform is required. Amorphous silicon (a-Si) is a promising candidate with one of the largest nonlinearities amongst CMOS compatible materials and a deposition-dependent bandgap that can be tuned to minimize nonlinear absorption at telecommunication wavelengths. However, the stability of a-Si under continuous-wave high power illumination at these wavelengths is dependent on the deposition procedure and is not well explained. Here, we demonstrate a method to stabilize the a-Si platform by adapting techniques used successfully for a-Si solar cells, transistors, and memory: material passivation with deuterium. We describe plasma enhanced chemical vapor deposition methods which we have implemented to fabricate a-Si films with tunable deuterium content, refractive index, and bandgap. We use power and time dependent insertion loss measurements of waveguides to demonstrate the evolution of hysteretic loss in conventional hydrogenated a-Si and its absence in our deuterated a-Si. Finally, we show that both the short carrier lifetime and high nonlinearity – important properties for nonlinear platforms – are left intact by the deuteration.
Biodata
Peter Girouard obtained his PhD in 2016 from Northwestern University in the field of Materials Science and Engineering. During his PhD, he used barium titanate thin films grown on magnesium oxide substrates to demonstrate compact, low-voltage, and high-speed conventional and slow-light electro-optic modulators. He is now a post-doc at the Technical University of Denmark, where he is developing silicon-based integrated nonlinear photonic platforms for all-optical signal processing.

Title
On photonic spectral entanglement improving quantum communication
Abstract
Single-photon sources are crucial components for the implementation of quantum communication protocols. However, photons emitted by some of the most popular types of realistic sources are spectrally broadband. Due to this drawback, the signal emitted from such sources is typically affected by the effect of temporal broadening during its propagation through telecommunication fibers which exhibit chromatic dispersion. Such problem can be observed e.g. when using
sources based on the process of spontaneous parametric down-conversion (SPDC). However this effect can be reduced by using spectrally correlated photons and time-resolved single-photon detection technique [Optica 4,84 (2017)]. This idea can be implemented to extend the maximal security distance of a quantum key distribution (QKD) scheme based on single photons [arXiv:1702.05165, arXiv:1711.06131].
Biodata
Dr. Piotr Kolenderski received MSc in Physics in 2006 and PhD in Physics in 2010 both from Nicolaus Copernicus Univeristy, Torun, Poland. Next, he joined  Quantum Photonics Laboratory at Institute for Quantum Computing, Waterloo, Canada as a post doctoral fellow. Now, Dr. Piotr Kolenderski works as an assistant professor at National Laboratory of Atomic, Molecular and Optical Physics, Torun, Poland (spa.fizyka.umk.pl) where his main research area is related to long distance quantum communication and entangled multi-photon iterations.

Title
Network Assessment for Radio over Fiber System
Abstract
Radio over Fiber (RoF) system has been designed to co-exist with the Passive Optical Network (PON) technology utilizing wavelength division multiplexing method. The work begins with optical network design, insertion loss, wavelengths, wireless frequency selection as well as positioning of the antenna at the most suitable location. In this paper, assessment of those parameters has been performed, and some limitation and requirement has been measured and recorded. RoF-WDM PON system has been successfully deployed for service trial with Remote Antenna Unit (RAU) located 10 km away from the central station. A wireless distances between the RAU to the outdoor unit (ODU) has been operated up to 300m. The operating frequency for the system is 15-16GHz to serve 3 users with the bandwidth of 56MHz/channel/user.
Biodata
To be updated

Title
Demonstration of Receiver Generated Optical Duobinary and VSB-NRZ for Next-Generation PON
Abstract
We present experimental demonstration of receiver generated optical duobinary (ODB) format for downstream and vestigial side band non-return to zero (VSB-NRZ) format for upstream in a next-generation passive optical network (NG-PON). Both formats are generated at the respective receivers by a single optical bandpass filter simplifying the design of the optical network unit (ONU) when compared with Mach Zehnder delay interferometer (MZDI) based detection. The optical line terminal (OLT) transmits a differential phase shift keying (DPSK) signal to take advantage of greater tolerance to fiber non-linear effects, which is then converted to ODB format at the ONU receiver for simple direct detection. VSB-NRZ in upstream is generated by adding a bandpass filter at OLT receiver instead of ONU transmitter to keep its design simple. The system presented here obtained a reach of 25 km on standard single mode fiber (SSMF) with C-band wavelengths for both down and upstream without using any dispersion compensation. The 1:64 split was emulated using an optical attenuator while using only a single transmitter and receiver pair at the ONU.
Biodata
Professor Dr Sevia M. Idrus is the Academic Manager of the School of Graduates Studies of Universiti Teknologi Malaysia (UTM). She is a faculty member of the Faculty of Electrical Engineering and Infocomm Research Alliance, UTM. She received her Bachelor in Electrical Engineering in 1998 and Master in Engineering Management in 1999, both from UTM. She obtained her Ph.D in 2004 from the University of Warwick, United Kingdom in the area of optical communication engineering. She served UTM since 1998 as an academic and administrative staff. Her main research interests are optical communication system and network, optoelectronic design, and engineering management. Her research output has been translated into a number of publications including a high-end reference book, ‘Optical Wireless Communication: IR Connectivity’ published by Taylor and Francis, 61 book chapters and monographs, over 100 technical papers, and 30 patent filings. To date, she has secured and been involved in 30 research grants with a total value of RM 3.45 M.

Title
Optical imaging, filtering and encrypting with strongly scattering media
Abstract
The scattering media such as frosted glass or biological tissue and human skin seems only diffusing light, creating random speckles, and deteriorating our visual ability as well as imaging capability. Here, we demonstrate that scattering media not only help us to take photos but also do optical filtering at the same time. More interestingly, a single piece of optical diffuser can work as multiple filters for different optical bands. Our findings are based on the spatial correlation and spectral decorrelation of speckle pattern generated by an optical diffuser. The spatial correlation or memory effect of an optical diffuser allows us to do imaging by deconvolution method while the spectral decorrelation is utilized for multi-band optical filters. A single shot of speckle pattern after optical diffuser is enough to capture all spatial and spectral information to construct the multispectral image of object. The memory effect of scattering diffusers is small; therefore, the field of view (FOV) is limited. We then demonstrate a spatial multiplexing technique to extend the FOV for imaging. Finally, our spatial multiplexing method with scattering media is utilized to enhance the security of optical encryption technique.
Biodata
Dr. Cuong Dang received his Ph.D. in Physics and M.Sc. in Electrical and Computer Engineering from Brown University, RI, USA in 2010. He received his M.Sc. in Physics from Brown University in 2006 and his B. Sc. in Physics from Vietnam National University, Hanoi, Vietnam. He was awarded Vietnam Education Fellowship (VEF) in 2004, and VEF professional development grant in 2009. He worked as a postdoctoral research associate, a senior research associate, and a manager of the Nano-Photonics laboratory at Brown University before joining LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, the School of EEE, NTU as a senior research fellow. In September 2014, he was assigned as an Assistant Professor at the school of EEE, NTU. Dr. Dang’s research on nanophotonics and nanomaterials, as well as their applications in sensors, photovoltaics, light-emitting diodes and lasers has been published and highlighted in top international journals including Nature Photonics and Nature Nanotechnology. His research and development with QD Vision Inc., Lexington, MA, USA was recognized with the first quantum dot product for solid state lighting: “Quantum LightTM Optic.” Then it has been further developed as “Color-IQ,” the world’s first high-volume Quantum Dot product for LCD Televisions. Sony’s BRAVIA 4K 65-inch Televisions that use QD Vision’s Color IQ have been named Best of Show Product at Consumer Electronics Show 2013 with their colour enhancement.

Title
Smart Water Quality Monitoring Technologies
Abstract
Millions of sensors are deployed to sense different aspects of our environment but the data is rarely exploited to its full potential. An example are the sensors deployed in riverbeds for monitoring its health but this data still needs to be understood and interpreted by the stakeholders. This data usually is not large enough to be characterised as ‘big data’ but requires careful processing to turn it useful. In this talk, we will explore some of the methods used in this context to interpret the data making it useful for the stakeholders. We will also discuss some novel methods of sensing especially related to water bodies and how we can process their outputs to give a better meaning.
Biodata
Dr Tahmina Ajmal joined the University of Bedfordshire as a Lecturer in Engineering in October 2010 and soon became Senior Lecturer. She has completed her PhD from the University of Essex on Secure Optical Networks (2007). After completing her PhD she worked there on IST EU MUSE (Multi Service Access Everywhere www.ist-muse.org) project for developing a high speed access network. In 2008, she joined the University of Bristol as a post doctoral researcher on a multi-disciplinary project for developing a low-cost water testing device for use in developing countries. She began her academic career in India when she joined Department of Electronics Engineering in Aligarh Muslim University after completing her BSc Eng and MSc Eng there. During this time her research activities focused on different applications of low-cost fibre sensors. She left the University to pursue PhD in 2003.

Title
Digital Signal Processing for Passive Optical Networks and Data Centre Interconnects
Abstract
A major constraint in access networks as well as in data center interconnects is cost effectiveness. Therefore low-cost optical components like direct modulated lasers (DML) and direct detection (DD) with a single photo diode (PD) might be the choice. In this contribution we investigate digital signal processing techniques, which are able to squeeze maximum data rates from inherently low speed and thus cost effective devices. We have to consider the nonlinear behavior of such devices, which can decrease the data rate and the reach, compared to systems with external optical modulation and coherent detection. A second part of this contribution reviews the implementation of an OFDM-based access network within a realistic scenario. Results of a field trial are reported as well.
Biodata
Werner Rosenkranz studied Electrical Engineering at the University of Erlangen-Nurnberg, Erlangen, Germany. There he received the Ph.D. in Electrical Engineering and the Habilitation in Communications. He worked on Phase-locked Loops, digital FM-systems, and Digital Signal Processing. He was with Philips Kommunikations Industrie and Lucent Technologies in Nuremberg, Germany for eight years. Since 1997 he is Professor at the Chair of Communications in the Department of Engineering of the University of Kiel, Germany. His main research activities are transmission-aspects in very high-speed digital communication systems with focus on optical transmission, synchronization systems, signal processing, and simulation. He is author or coauthor of more than 250 publications on selected topics as e.g. compensation and equalization of optical transmission channels, advanced modulation formats in optical communications, high-speed transmission, modeling of channel impairments etc. Prof. Rosenkranz is a Senior Member of IEEE, a Fellow of the OSA, and member of VDE and ITG.

Title
Dual air core fibres
Abstract
The air core fibre technology has already demonstrated material-unrestricted transmission, with a minimum interaction with glass, spanning from UV to mid-IR. It is anticipated that the technology is mature to reach the next stage; a fibre device level. Among fibre devices, a fibre coupler is a key component to most of fibre-based devices in fibre communication, fibre lasers, and fibre sensors. This talk presents recent development of dual air core fibres for a coupling application. Thanks to the air cores, the coupler promises material unrestricted performances including broad transmission window, low dispersion, and low nonlinearity.
Biodata
Yoo Seongwoo received his BSc from Hanyang university, Seoul, Korea, in 1999 as a Baeknam scholarship holder and subsequently his MSc and PhD from Gwangju Institute of Science and Technology, Gwangju, Korea, in 2001 and 2005, respectively for his study on special fibre design and fabrication. In 2004, he joined the Optoelectronic Research Centre (ORC), Univeristy of Southampton, UK, as a research assistant and, then as a post-doctoral research fellow in 2005. During his stay in the ORC, his research has centred on special fibre development for high power fibre lasers and amplifiers. In 2011, he joined the School of Electrical and Electronic Engineering at Nanyang Technological Univerisity.