about symposium · 2019-03-18 · dr. abi waqas, muet, jamshoro ... [reading, 2013]), it is...

3EmErging TrEnds and applicaTions of opTics, phoTonics and lasErs //

This two day international symposium is aimed for research students, academics, and professionals to acquaint themselves with the world class research and development in photonics. Recently, European Union (EU) has identified Photonics as one of the six Key Enabling Technologies (KETs) which will shape the 21st century. On similar lines in US the National Photonics Initiative (NPI) has been established since 2016—a broad-based collaborative alliance among industry, academia, and government institutions. The major objectives of NPI are to combine the strength and resources for photonics and quantum sciences and related technologies for the emerging applications in the connected world.This symposium will focus on various key areas of Photonics; e.g., from Photonic Devices, to Photonics Integrated Circuits (PICs) for large scale datacentres, large bandwidth optical fibre communications, and emerging semiconductor device, optical sensors and platforms for e-healthcare, smart grids, and autonomous sensors for Internet of Things paradigm. The scope of this symposium includes:

• Photonics and Nanophotonics • Integrated Photonics• Silicon photonics devices and technologies• High bandwidth optical communications and networks• Optical sensors and technologies• Optical MEMS• Semiconductor lasers• Development of numerical methods for photonics• Metasurfaces• Photonic crystals and artificial dielectric structures

The symposium would include invited presentations and contributed talks from world class invited speakers and researchers. Also local industry professionals will be invited to participate in panel discussions. This event will also provide an opportunity for the young professionals to learn from the leading international authorities about the latest developments and future trends in rapidly expanding field of integrated photonics and emerging quantum optics applications.

About Symposium

4 // EmErging TrEnds and applicaTions of opTics, phoTonics and lasErs 5EmErging TrEnds and applicaTions of opTics, phoTonics and lasErs //

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s Symposium Committees 6 General Chair 6 Coordinating Chair 6 Organizing Committee 6Symposium Program 7Invited Speaker Abstracts 9

Prof. B M Azizur Rahman 9Prof. Dr. M. Yasin Akhtar Raja 10Prof. K T V Grattan 11Prof. Nan-Kuang Chen 12Prof. Sulaiman Wadi Harun 13

Dr. Imran Shafique Ansari 14Dr. Tauseef Tauqeer 15Prof. Dr. B. S. Chowdhry 16Dr. Abi Waqas 17Dr. Kashif Riaz 19Dr. Salman Abdul Ghafoor 20Dr. Muhammad Zubair 21Dr. Kamran Abid 22Dr. Jehan Akbar 23Dr. M. Qasim Mehmood 24Dr. Usman Younis 25Dr. Hassan Abbas Khan 26

Engr. Prof. Dr. Ahmed Shuja Syed 27

Contents

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Symposium Committees

Steering Committee Chair

General Chair

Dr. Nassar Ikram Pro-Rector, RIC National University of Sciences & Technology Islamabad, Pakistan

Dr. S. M. Hassan ZaidiPrincipal & DeanNUST School of Electrical Engineering & Computer ScienceH-12, Islamabad, Pakistan

Professor Dr. B.S. ChowdhryFormer Dean MUET-FEECE IEEE Fellow, Chair Professor Electrical and Mehran University of Engineering & Technology, Jamshoro, Pakistan

Coordinating Chair

Dr. Salman Abdul GhafoorNUST-SEECS Program Chair

Dr. Seemab LatifNUST-SEECS Coordinating Chair

Dr Shahid Baqar NUST-SEECS Industry Laison chair

Organizing CommitteeDr. Usman YounisITU Lahore Publications and Media Chair

Dr. Tauseef TauqeerITU Lahore Events Chair

Dr Rafia Mumtaz NUST-SEECS Internationalization Chair

Symposium Program

9:00 AM – 9:50 AM RegistrationOpening Ceremony (10:00 AM – 11:05 AM)

10:00 AM – 10:05 AM Start + Recitation of Holy Quran10:05 AM – 10:15 AM Welcome Note – Dr. S. M. H. Zaidi

10:15 AM – 10:45 AM Keynote Talk – “Recent Advances in Ultrafast Photonics “ Prof. Dr. Sulaiman Wadi Harun, Department of Electrical Engineering, University of Malaya

10:45 AM - 10:55 AM Pro Rector’s Speech10:55 AM – 11:05 AM Inaugural Speech – Chief Guest

11:05 AM – 11:30 AM Refreshments Plenary Session - Session – 2 (11:30 AM – 1:15 PM) OPTICAL SENSORS

11:30 AM – 12:10 AM “Fibre optic sensors - an advance in scientific instrumentation for industrial purposes” Prof. Dr. Kenneth T. V. Grattan, City University London

12:10 AM – 12:40 PM “Biological sensing using nanotechnology”Dr. Kashif Riaz, ITU, Lahore

12:40 PM – 01:10 PM “Micro- and Nano-scale Device Engineering for Photonic Integrated Circuits (PICs), IoT Platforms and Photovoltaic Applications”Engr. Prof. Dr. Ahmed Shuja Syed

1:10 PM – 2:10 PM Lunch Session – 3 (2:10 PM – 4:50 PM) MODELINGOF OPTICAL DEVICES

2:10 PM – 2:50 PM “Design and Optimization of Photonic Devices by Using the Finite Element Method”Prof. B. M. A. Rahman, City University, London

2:50 PM – 3:15 PM “Stochastic photonics: Uncertainty-Aware designs of photonic circuits and devices”.Dr. Abi Waqas, MUET, Jamshoro

3:15 PM – 3:40 PM “Physical Modeling of High Speed Semiconductor Device”Dr. Tauseef Tauqeer, ITU, Lahore

3:40 PM – 4:05 PM “Spectral Response Modeling and Analysis of Heterojunction Bipolar Phototransistors”Dr. Hassan Abbas Khan, LUMS, Lahore

4:05 PM – 4:50 PM Panel Discussion with Industry Participants for forging Industry Academia linkage5:00 PM Onwards Refreshments7:00 PM – 8:00 PM Symposium Dinner

Day – 1 (11 March, 2019)


Day – 2 (12 March, 2019)Session – 1 (9:00 AM – 10:30 AM) OPTICAL DEVICES

9:00 AM – 9:25 AM “Optical devices and application using 2D metasurfaces”Dr. Muhammad Qasim Mehmood, ITU, Lahore

9:25 AM – 9:50 AM “Dye-sensitized solar cells”Dr. Kamran Abid, University of the Punjab, Lahore

9:50 AM – 10:15 AM “Designing and Fabrication of Semiconductor mode-locked Lasers”Dr. Jehan Akbar, Hazara University, Mansehra

10:15 AM – 10:30 AM “Fiber Optic Sensors for Achieving Intelligent Sensing, Instrumentation and Measurements”Professor B. S. Chowdhry, Distinguished National ProfessorMehran University of Engineering & Technology -JAMSHORO - PAKISTAN

10:30 AM - 11:00 AM RefreshmentsPlenary Session - Session – 2 (11:00 AM – 12:45 PM) PHOTONIC WAVEGUIDES & INTERFEROMETERS

11:00 AM – 11:45 AM “Hundreds-µm–sized fiber interferometers for microsensing applications”Prof. Nan-Kuang Chen, Liaocheng University, China

11:45 AM – 12:15 PM “Recent trends in computational electromagnetism and its applications in Optics & Photonics”Dr. Muhammad Zubair, ITU, Lahore

12:15 PM – 12:45 PM “High Coupling Efficiency Surface Illuminated 2D Metasurface Waveguide Coupler for Mid-IR Wavelengths”Dr. Usman Younis, ITU, Lahore

12:45 PM – 1:45 PM Lunch Session – 3 (1:45 PM – 4:00 PM) OPTICAL COMMUNICATIONS

1:45 PM – 2:20 PM “Free-Space Optical Communications – Towards 5G and Beyond” (Through Skype)Dr. Imran Ansari from Glasgow University, UK

2:20 PM – 2:40 PM “Ultra-wideband over fiber communication systems”Dr. Salman Abdul Ghafoor, SEECS NUST, Islamabad

2:40 PM - 3:00 PM “Resource allocation and optimization in elastic optical networks”. Dr. Arsalan Ahmad, SEECS, NUST

3:00 PM – 4:00 PM Research Labs and Projects VisitConcluding Session (4:00 PM - 4:25 PM)

4:00 PM - 4:15 PM Symposium Review – Program Chair4:15 PM - 4:25 PM Chief Guest Remarks4:25 PM Onwards Refreshments

Title:

Design and Optimization of Photonic Devices by Using the Finite Element Method

By: Prof. B M Azizur RahmanSchool of Engineering and Mathematical Sciences, City University, London EC1V 0HB, UKA

Brief Profile:Prof. B. M. Azizur Rahman received his PhD degree from University College London in 1982 and now a full Professor at City University London. At City University, he leads a large research group of 12 post-docs and PhD students,

working on Photonics Modelling, specialised in the development and use of rigorous and full-vectorial numerical approaches to design, analyse and optimise a wide range of photonic devices. He has received more than £6 M research grants from research councils and industries. He has published more than 450 journal and conference papers, and his journal papers have been cited nearly 2000 times. He is a Fellow of OSA, Fellow of SPIE and senior member of IEEE (USA).

Abstract:As optical technology has reached maturity, the associated devices have themselves become more complex. The optimization of such advanced devices requires an accurate knowledge of their lightwave propagation characteristics and their dependence on the system fabrication parameters. The optimization of existing realistic designs or the evaluation of new designs for optoelectronic devices and sub-systems has created significant interest in the development and use of effective numerical methods, as simple analytical approaches are often inadequate. Of the different numerical approaches for modal solutions reported so far, the finite element method (FEM) [1] has been established as one of the most powerful and versatile methods. Over the last two decades this technique has been used to characterise a wide range of waveguides. In the finite element approach, the problem domain is suitably divided into a patchwork of a finite number

Invited Speakers Abstracts


of sub regions called elements. Each element can have a different shape and size and using many elements, a complex problem can be accurately represented. A wide range of photonic devices with more complex shapes can be modelled as each element can be considered to have different optical parameters such as refractive index, anisotropic tensors, nonlinearity, and loss or gain factors. Many important photonic devices, such as optical modulators, filters, polarization splitters, polarization rotators, power splitters, etc may be fabricated by combining several butt-coupled uniform waveguide sections. To design and analyse such photonic devices, it is important to use a junction analysis program in association with a modal analysis program.

Title: Communication Infrastructures in Access Networks

Prof. Dr. M. Yasin Akhtar RajaDepartment of Physics and Optical Science, & Center for Optoelectronics and Optical Communications, University of North Carolina (UNC) at Charlotte, NC, USA Email: [email protected]; [email protected]

Brief Profile:Tenured full Professor, published over 190 papers; delivered 50+ recent invited talks and obtained/filed 8 patents/inventions; supervised 46 students including

34 graduate dissertation/ theses (23 MS, 11 PhD), 6 (non-thesis) MS, and 6 BS honors projects; and served on 90+ theses/ dissertation committees; chaired/served on program committees as well as several search and hiring committees; organized 18 international conferences, several workshops, and panels.

Abstract:Access networks are usually termed “last-mile/first-mile” networks since they connect the end user with the metro-edge network (or the exchange). This connectivity is often at data rates that are significantly slower than the data rates available at metro and core networks. Metro networks span large cities and core networks connect cities or bigger regions together by forming a backbone network on which traffic from an entire city is transported. With the industry achieving up to 400 Gbps of data rates at core networks (and increasing those rates [Reading, 2013]), it is critical to have high-speed access networks that can cope with the tremendous bandwidth opportunity and not act as a bottleneck. The opportunity lies in enabling

services that can be of benefit to the consumers as well as large organizations. For instance, moving institutional/personal data to the cloud will require a high-speed access network that can overcome delays incurred during upload and download of information. Cloud-based services, such as computing and storage services are further enhanced with the availability of such high-speed access networks. Access networks have evolved over time and the industry is constantly looking for ways to improve their capacity. Therefore, an understanding of the fundamental technologies involved in wired and wireless access networks will help the reader appreciate the full potential of the cloud and cloud access. Against the same backdrop, this chapter aims at providing an understanding of the evolution of access technologies that enable the tremendous mobility potential of cloud-based services in the contemporary cloud paradigm.

Title: Fiber Optic Sensors - An Advance in Scientific Instrumentation for Industrial purposes

Prof. K T V GrattanSchool of Engineering & Mathematical Science, City University London, Northampton Square, London EC1V 0HB, U.K. Email: [email protected]

Brief Profile:As a scientist, Prof. Grattan has published more than 700 journal and conference papers and his papers have been cited nearly 10000 times with an h-index of

40 (Google Scholar). He has received about 100 research grants of value over £15M from industry and the research councils and successfully supervised over 50 PhD students. As Dean of Graduate School, he is responsible for nearly 1000 PhD students, the majority international, across City University London, and is emphasizing in his role their research training, research environment and highlighting employability in industry. He will bring the scientific expertise in optical instrumentations and research managements of PhD students to this workshop.

Abstract:Fiber optic sensors have been the subject of research since the late 1970s and their development has paralleled the expansion of laser technology and the creation of different types of optical fibre. Fibre


optic sensors have in that time moved from being laboratory curiosities to major techniques available for scientific measurement, creating instrumentation that often can make measurements where other systems will fail. The talk will discuss the principles of fibre optic sensors which suit them to these applications and illustrate their use and potential for industry today, worldwide from the work of the author and his colleagues.

Title: Hundreds-um–sized Fiber Interferometers for Microsensing Applications

Prof. Nan-Kuang ChenSchool of Physics Science and Information Technology, Liaocheng University, Shandong, China 252000Email: [email protected]

Brief Profile:Nan-Kuang Chen received the B. Sc. and M. Eng. degrees from the National Tsing Hua University, Taiwan, in 1996 and 1998, respectively, the Ph. D. degree

from National Chiao Tung University, Taiwan, in 2006. During July 2006 to July 2007, he was a postdoctoral research fellow with the Department of Photonics, National Chiao Tung University, Taiwan. He was an Assistant Professor (August 2007 – July 2010), Associate Professor (August 2010 – January 2014), and Professor (February 2014 – December 2017) with the Department of Electro-Optical Engineering, and Director of Optoelectronics Research Center (August 2008 – July 2014), and Chief of International Affairs Division, Office of R&D (December 2012 – July 2015), National United University, Taiwan. From Jan 2018, he is a Distinguished Professor with the School of Physics Science and Information Technology, Liaocheng University, China. He has also been invited to be a Ph. D. Student co-supervisor for IIT, Dhanbad in India since September, 2016, an SPIE (the international society for optics and photonics) Travelling Lecturer in 2015 and 2017 and Guest Professor for China Jiliang University since May 2014.

Abstract:In photonic applications, miniaturized fiber sensors at the length of 100 um scale have been found to helpful for ultra-tiny sample volume microsensing. Conventionally, the popular fiber-optic sensors are based

on fiber Bragg gratings, long period gratings, Sagnac loop interferometers, Fabry-Perot interferometers, Michelson interferometers, and Mach-Zehnder interferometers. However, those interferometric sensors are usually with a device length of longer than a few centimeters, which is disadvantageous to achieve the high accuracy measurements for ultra-weak signals or tiny sample volume. In this talk, the fiber abrupt tapering technique is the fabrication method which breaks the adiabatic waveguiding in fiber core and transforms fractional power of the core mode into cladding modes will be introduced to achieve the miniaturized and integrated fiber components. By introducing two adjacent abrupt tapers in a highly Er/Yb codoped silica fiber using a focused CO2 laser beam to make micro Mach-Zehnder interferometer (MZI), the minimum device length achieved can be as short as 180 um. Fractional power of the core mode is coupled to excite the cladding modes through the first abrupt taper and the residual core mode and the excited cladding modes thus propagate through the different optical paths. The cladding modes and the core mode meet up at the second abrupt taper to produce interferences. The cladding modes can sense the ambient index variations of the external material coating at the phase shifter or at the abrupt tapers.

Title: Recent Advances in Ultrafast Photonics

Prof. Sulaiman Wadi HarunDepartment of Electrical Engineering, University of MalayaE-mail: [email protected]

Abstract:Ultrafast lasers, which generate optical pulses in the picosecond and femtosecond range, have progressed over the past decade from complicated and specialized laboratory systems to compact, reliable instruments. Semiconductor lasers

for optical pumping and fast optical saturable absorbers, based on either semiconductor devices or the optical nonlinear Kerr effect, have dramatically improved these lasers and opened up new frontiers for applications with short temporal resolution, high peak optical intensities and fast pulse repetition rates. On the other hand, advances in materials science have enabled the fabrication of new materials known as nanomaterials. These materials possess remarkable optical properties, unlike any other materials to date, and offer new and exciting opportunities for the development of future optical devices. For instance, they exhibit exceptional properties, including the quickest saturable absorber behaviour for any materials to date and the ability to operate over a wide range of wavelengths. We are investigating and exploiting the remarkable optical properties of nanomaterials to develop new ultrafast lasers. These lasers are the main


work-horses for various applications in industry, research and military. Our research considers numerous nanomaterials: graphene, transition metal di-chalcogenides, topology insulator, black Phosphorus, TiO2, CdSe, ZnO and each with distinct yet complementary properties. We have used these materials to develop a variety of short-pulse lasers at different wavelengths of 1, 1.5 and 2 micron regions.

Title: Free-Space Optical Communications – Towards 5G and Beyond

Dr. Imran Shafique AnsariAssistant Professor, University of Glasgow

Abstract:With the advent of 5G and beyond, are we well prepared to take care of the spectrum crunch issue? Optical wireless communication (OWC) technology is seemingly a sound and trending solution. Specifically, terrestrial OWC i.e.

free-space optical (FSO) technology is an answer to many challenges that are being faced in today’s world of wireless communication systems. It is able to cater to the needs of higher data rates alongside being implicitly secure besides numerous other benefits that it accounts for. Hence, during this talk, one will get an overview of this potentially great technology with some highlight from the performance point of view followed by some glimpses towards its security analysis

Title: Physical Modelling of High Speed Semiconductor Device

Dr. Tauseef TauqeerAssociate Professor, Dean for Department of Electrical Engineering, Information Technology University (ITU), LahoreEmail: [email protected]

Brief Profile:Dr. Tauseef Tauqeer earned B.E. degree in Electronics Engineering from Ghulam Ishaq Khan Institute of Engineering Sciences and Technology (GIKI),

Swabi, Pakistan in 2005. He acquired his M.Sc. degree in Communication Engineering and the Ph.D. degree in Microelectronics and Nanostructures, both from The University of Manchester, U.K, in 2006 and 2009, respectively at the young age of 25 years. During his studies, he was involved in the design and fabrication of InP-based low-power gigahertz-class Analog-to-Digital converters for the international Square Kilometre Array (SKA) radio telescope. As a result of his outstanding performance and research, he was conferred the award of the Best PhD student of Microelectronics and Nanostructure research group at the University of Manchester in 2008.He has previously served as the Head of Department of Electronics, Power and Control in the School of Electrical Engineering and Computer Sciences (SEECS), National University of Sciences and Technology (NUST), Islamabad, Pakistan. He has received the Best Teacher Award for the academic year 2013-14 at NUST-SEECS. He is also a member of National Curriculum Review Committee (NCRC) in Electronics Engineering, Higher Education Commission (HEC) of Pakistan for 2014-15.

Abstract:Two-dimensional DC physical device simulations of InP/InGaAs single heterojunction bipolar transistor were carried out using Technology-Computer-Aided-Design (TCAD) within the SILVACO software package in order to better understand the carrier transport mechanism and the underlying device physics.


Member, IEEE Inc. (USA), SM ACM Inc. (USA). He is lead person at MUET of several EU funded Erasmus Mundus Program including “Mobility for Life”, “StrongTies”, “INTACT”, “LEADERS”, and International credit mobility. He has organized several International Conferences including “IMTIC08”, “IMTIC12”, “IMTIC13”, “IMTIC15”, “IMTIC18”, “WSN4DC13”, “IEEE SCONEST”, “IEEE PSGWC13”, and track chair in “Global Wireless Summit (GWS 2014), and Conference GCWOC’16, GCWOC’17 , GCWOC18 held in Malaga Spain. He is member (BOG) Higher Education Commission (HEC) Pakistan.

Abstract:This talk will cover issues related to the Intelligent Sensing, Instrumentation and Measurements in general and the development of the new sensing technologies emerging in broad commercial use in particular. A review of broad range of point sensors and distributed sensor technologies having applications in a multiplicity of markets including smart structures, energy, biomedical, security, military, and process control will be highlighted. The field of sensors is a wide multidisciplinary regarding different competencies to successfully arrive to a prototype. Some of the recent research has concentrated on the implementation of an innovative, robust, and reliable integrated optical device for the detection of several analyses. The presentation will also cover importance in advanced sensing systems and description of several projects based on Collaborative Vertically Integrated Projects (CVIP) which reflects significant achievement in intelligent sensing, instrumentation and measurements.

Title: Fiber Optic Sensors for Achieving Intelligent Sensing, Instrumentation and Measurements

Prof. Dr. B. S. ChowdhryDistinguished National ProfessorDean Faculty of Electrical, Electronics and Computer EngineeringMehran University of Engineering & Technology, Jamshoro, PakistanE-mail: [email protected]

Brief Profile:He is the Distinguished National Professor and the Dean Faculty of Electrical,

Electronics and Computer Engineering at Mehran University of Engineering & Technology, Jamshoro, Pakistan. He has varied teaching and research experience of more than 3 decades in diversified fields such as Electronics, Telecommunication, Microprocessor Technology, Internet of Things, Telemedicine, Wireless sensor networks, ICT etc. After completing his first degree in Electronic engineering discipline in 1983 with first class first position, he joined MUET as a faculty member. He did PhD from the school of Electronics and Computer Science University of Southampton, UK in 1990. He has the honour of being one of the editor of several books “Wireless Networks, Information Processing and Systems”, CCIS 20, “Emerging Trends and Applications in Information Communication Technologies”, CCIS 281, “Wireless Sensor Networks for Developing Countries”, CCIS 366, “Communication Technologies, Information Security and Sustainable Development”, CCIS 414, published by Springer Verlag, Germany. He has also been serving as a Guest Editor for “Wireless Personal Communications” which is Springer International Journal. He has produced more than dozen PhD’s and supervised more than 50 MPhil/Master’s Thesis in the area of ICT. He has been invited as a PhD examiner by University of Aalborg Denmark, University of Limerick Ireland, Polytechnic Milano, Italy, University of Malaga, Spain and IIUM, Malaysia. He has evaluated more than dozen PhD thesis at national level. His list of research publication crosses to over 60 in national and international journals including IEEE Transaction, IEEE and ACM proceedings. Also, he has Chaired Technical Sessions in USA, UK, China, UAE, Italy, Sweden, Finland, Switzerland, Pakistan, Denmark, Japan and Belgium. He is member of various professional bodies including: including immediate past Chair IEEE Karachi Section, IEEE COMSOC Chair Karachi Section (Region10 Asia/Pacific), Fellow IEP, Fellow IEEEP, Senior

Title: Stochastic Photonics: Uncertainty-Aware Designs of Photonic Circuits and Devices

Dr. Abi WaqasAssistant Professor | Member OSA | Member IEEEDepartment of Telecommunication, MUET, JamshoroEmail: [email protected]

Abstract:Advances in photonic integration are making possible the implementation of complex photonic circuits combining many functionalities on a single

chip, potentially achieving significant production volumes and reduced production costs. Being largely dominated in telecom industry, photonic community has exploited the advantages of the integration of


optical circuits for biological application, sensing, optical signal processing, microwave photonic system, narrow band filtering etc. In recent years, complex and compact components led to new applications and business opportunities. It is expected that photonic integrated circuits will increasingly be applied in the fields of optical components and systems, safety and defence systems, medical technology and life science, communication and information technology. For this reason, nowadays and even more in the in the near future the market breakthrough for integrated photonic will be closely related to the increasing of the complexity of the circuits. While standard fabrication technologies are an essential condition for the commercial exploitation of photonic, they still have to face an unavoidable reality of uncertainties. These uncertainties may arrive from different sources but major cause of uncertainties are the tolerances that inevitably characterize the fabrication process. As results of these uncertainties, different fabricated devices, which are expected to be nominally same, differ from one to another and that may eventually cause a fabrication yield too low to be economically sustainable. Photonic devices are much longer than the operation wavelength; as a result, a small change in device dimensions can cause a dramatic phase error, therefore unavoidable manufacturing uncertainties related to fabrication process can be particularly detrimental and is a challenge for the design of large and complex photonic integrated circuits. As a result, the device response is no longer considered as deterministic but is more suitably interpreted as a stochastic process and stochastic analysis of photonic circuit becomes the fundamental and crucial step in design phase before the final fabrication of photonic circuit. Unlike electronic, the corner analysis approach (commonly used method for statistical analysis of electronic circuit) does not work in photonic as it provides too pessimistic and inaccurate description of the variation effect. Thus, more advanced and efficient statistical methods are required to perform the stochastic analysis of photonic circuits. In this talk, we will focus on the different statistical tools for the stochastic analysis and performance optimization of integrated photonic circuit.

Title: Biological Sensing using Nanotechnology

Dr. Kashif RiazAssistant Professor, Department of Electrical Engineering, Information Technology University (ITU), LahoreE-mail: [email protected]

Abstract:3D nano-spikes based system for biological manipulations and sensing, such as electroporation (EP), electric cell lysis (ECL), electroporation based protein

extraction and impedance based cancer detection has been developed. Electrical methods are used for biological manipulations and sensing with low energy consumption due to electric field enhancement at 3D high-aspect-ratio nano-spikes (NSPs). Periodic 3D high-aspect-ratio nano-spikes were fabricated on low cost commercial Al foils using scalable electrochemical anodization and etching processes with controllable dimensions ranging from 600 nm to 1100 nm. Due to scalability of fabrication process, 3D NSPs were fabricated on microchips as well as on a 4 inch wafer. High EP efficiencies and cell viabilities (>93±6%) for HeLa cells were achieved at 4 V for single pulse of 2ms and at 2V, 12 ms for 10 pulses on nano-spikes based electroporation (NSP-EP) chips by optimizing electric pulse protocol and NSPs dimensions. This applied voltage is more than ten times lower in comparison with planar electroporation (PEP) devices without NSPs. Low voltage operation avoided bubble generation on chips and increase device reliability and cell viabilities. I have developed an energy efficient 3D high-aspect-ratio nano-spikes based electric cell lysis (NSP-ECL) chips for efficient cell lysis due to electric field enhancement at NSPs. NSP-ECL chips have achieved high cell lysis efficiencies ƞlysis (99.9±0.1%) at more than ten times reduced pulse amplitudes (2 V) in comparison to the planar ECL chips without NSPs. These applied pulse amplitudes are 2-3 times reduced in comparison with traditional electroporation systems. The specific energy input required to achieve 99.9±0.1% ƞlysis was only in the range of 0.5-2 mJ/mL which is 3-9 orders of magnitude lower in comparison with other cell disintegration methods (5J/mL-540kJ/mL). I have developed an energy efficient method for intracellular protein extraction using electroporation on 3D nano-spikes with minimum cell invasiveness. The specific energy input required for protein extraction was in the range of 0.5-3 mJ/mL which is 4-8 orders of magnitude less than other classical methods. Cell membrane disintegration, cell debris micronization, and non-selective contaminant release was avoided durin protein extraction through reversible electroporation. I have developed 3D nano-spikes based Bio-impedance senor (nBIS) for label-


Title: Recent trends in Computational Electromagnetism and its applications in Optics & Photonics

Dr. Muhammad ZubairAssistant Professor, Department of Electrical Engineering, Information Technology University (ITU), LahoreE-mail: [email protected]

Abstract:In the beginning, electromagnetic analyses were done with pencil-and-paper approach to find the closed form exact solutions. With the invention of

computers, numerical solutions were sought. This development did not only happen in electromagnetics, but also in other fields of science and engineering, such as computational mechanics, fluid dynamics, and physics. Nowadays, Computational Electromagnetics (CEM) replaces pencil-and-paper analyses with the electromagnetic simulation tools which can be used as a virtual laboratory where proposed design ideas can be tested, and virtual prototyping can be performed. It is quite well known that the CEM is a rather mature field. There are several well-established algorithms for solving EM simulation problems. At present, there are many powerful commercially available electromagnetic simulation tools that are based on single or hybrid forms of available algorithms. However, the generalized commercial EM tools are always limited in their applications by their computational efficiency and memory requirements for some special EM problems where an Adhoc EM simulation algorithm will still be more useful. In the first part of this talk, we will introduce a few commonly used integral equation (IE) based fast solvers and some of our work in their extension beyond commercially available versions. The proposed algorithms have been designed to handle electrically large real-world problems involving metals, inhomogeneous dielectrics and their aperiodic arrays for various photonic applications. Illustrative examples would be included in the presentation to demonstrate the versatility, wide-range applicability, as well as numerical efficiency when compared to the existing methods. In the second part of this talk, we will talk about a rather new theoretical approach in EM, termed as “fractal electrodynamics”, which has attracted widespread attention in the recent years motivated by it fundamental importance and the possibility of numerous practical applications in electromagnetic modeling of complex structured devices. Finally, the extension of this approach to other systems such as metamaterials and plasmonics will be discussed.

free impedance detection and phenotyping of cancer and non-cancer cells. Electric signals were extracted directly from cell membrane by nano-spikes penetration into the cells. Charge transfer resistance Rct was good electric indicator with 20-30% difference for detection and phenotyping of different cells.

Title: Ultra-wideband over Fiber Communication Systems

Dr. Salman Abdul GhafoorAssistant Professor Department of Electrical EngineeringSchool of Electrical Engineering and Computer Science (SEECS)National University of Sciences and Technology (NUST)Email: [email protected]

Abstract:Ultra-Wideband (UWB) is an attractive and promising wireless communication

technique which provides carrier-free, high-data rate wireless transmission to mobile users. Due to low radiated power limitation imposed by Federal Communications Commission (FCC), UWB can only operate for short distance communications of a few meters to tens of meters. The main advantages associated with UWB technology are high bandwidth, low radiated power, immune to multi-path, high data rate and low cost. FCC denies that a wireless signal having a 10-dB bandwidth equal to or greater than 500 MHz or a fractional bandwidth greater than 20% of the center frequency comes under the category of a UWB signal. The power spectral density (PSD) of a UWB signal must be less than -41.3 dBm/MHz and the signal must be in 3.1 - 10.6 GHz band. These limitations imposed by FCC on UWB signal are defined as FCC mask. UWB is limited to indoor wireless technology due to the strict limitations imposed by FCC on the radiated power of the UWB signal. To increase the capacity of a UWB communication system and exploit the inherent benefits associated with this technology, UWB over fiber (UWBoF) is considered a suitable solution. Transmission of UWB signals over low loss and high bandwidth optical fibers enhance the advantages. Additionally, UWBoF can be integrated with existing or future wired optical access networks. Apart from distributing the UWB signals over optical fibers, it is also desirable to generate the electronic UWB signal by employing all-optical techniques. In this talk, I will discuss different all-optical techniques for the generation and transmission of UWB signals.


Title: Designing and Fabrication of Semiconductor mode-locked Lasers

Dr. Jehan AkbarDepartment of Physics, Hazara University, Mansehra, PakistanE-mail: [email protected]; [email protected]

Abstract:In this talk the basic operation principles of operation of semiconductor lasers and semiconductor mode locked lasers will be described. Different types of mode locking techniques and their merits demerits will be discussed. Introduction to

semiconductor materials, fabrication technology and fabrication steps of simple broad area lasers will be briefly discussed.In the second part of the talk, I will present fabrication and characterization of high output power semiconductor mode locked lasers (MLLS), which are monolithically integrated with various types of semiconductor optical amplifiers (SOAs). These devices are based on AlGaInAs/InP material with three quantum wells in the active region.The output power obtained from the semiconductor MLLs is limited due to non-linear effects in the gain medium of the device, which leads to instabilities in the mode locking of the lasers. In order to obtain high output power, various configurations such as array of lasers [1], bowtie gain regions [2], waveguides with tapers [3] and master oscillator power amplifiers (MOPAs) [4] have been employed. We fabricated an integrated device with a semiconductor mode locked laser and optical amplifier which provide high output power.I will present results obtained from monolithically integrated semiconductor MLLs with single transverse mode ridge waveguide SOAs and tapered SOAs of different taper angles, respectively. The effect of the integration of SOAs on the output power and the mode locking performance of the devices are investigated under different bias conditions. The SMLLs monolithically integrated with single mode SOAs provide average output power of 130mW and peak power of 1W. Similarly, 200mW output power is obtained from semiconductor MLL integrated with a 2° tapered SOA, while the integrated 6° tapered SOA at the output of a semiconductor MLL, gives a maximum output power of 105 mW.References[1] S. Gee, G. Alphonse, J. Connolly, and P. J. Delfyett,“ High power mode-locked external cavity semiconductor laser using inverse bow-tie semiconductor optical amplifiers” IEEE Journal of Selected

Title: Dye-sensitized Solar Cells

Dr. Kamran AbidAssistant Professor, Department of Electrical Engineering, College of Engineering & Emerging Technologies, University of the PunjabE-mail: [email protected]

Brief Profile:He obtained my Master’s degree in Computer Science/ Communications in 2000 and joined the Institute of Leadership and Management1, Lahore, Pakistan.

Later I joined the University of the Punjab2 in 2001 as subsequently appointed as Director IT3, where I worked on automation, Optical communication and software development projects. I have been teaching to graduate and post-graduate classes at the University of the Punjab and University of Management & Technology. I did my PhD from the Department of Electronics & Electrical Engineering, School of Engineering, University of Glasgow4, UK, in 2011. My research interests include Silicon photonics, semiconductor device fabrication technologies, organic & semiconductor devices, radiation detectors (for optical data communication), light emitting diodes, solar cells, Networks & communication technologies, Networks & communication technologies, DWH, information retrieval, programming languages, Software Quality Assurance and Educational Administration.

Abstract:We report on the sensitization of a novel dye and fabrication and characterization of dye sensitized solar cells (DSSCs) using the novel dye. The novel dye was tested for solar cell applications and the DSSCs fabricated with this dye were compared with DSSCs based on commercially available N719 and Ruthenium/5DN (Z-907) dyes. The devices fabricated with 2, 4 DFP dye shows efficiency of 0.90% while similar devices based on N-719 dye and Z-907 dye exhibit 3.005% and 6.59% respectively. The open circuit voltage of devices based on the novel dye is comparable to N719 dye and gives fill factor of about 73% (highest among the fabricated solar cells), which shows high quality of the devices based on novel dye.


Title: High Coupling Efficiency Surface Illuminated 2D MetasurfaceWaveguide Coupler for Mid-IR Wavelengths

Dr. Usman YounisAssistant Professor, Department of Electrical Engineering, Information Technology University (ITU), LahoreEmail: [email protected]

Brief Profile:Dr. Younis is an Assistant Professor in the Department of Electrical Engineering, Information Technology University (ITU), Lahore, Pakistan. Previously,

he has worked as an Assistant Professor at the School of Electrical Engineering & Computer Science, National University of Sciences & Technology (NUST), Islamabad, Pakistan, and as a research fellow in the Department of Electrical and Computer Engineering, National University of Singapore, Singapore. He has obtained a hands-on experience in micro/nano-fabrication technologies, with specific applications of developing monolithically integrated optoelectronic devices. His research interests include active and passive photonic integration, optoelectronics, laser physics, applied non-linear optics, optical communications and networks.He has authored papers in leading peer-reviewed journals, and has presented in several international conferences. He is a member of the Institute of Physics, and is a registered engineer at the Pakistan Engineering Council.His cumulative Impact Factors score is: 35.74

Abstract:Sub-wavelength periodic structures have been investigated significantly in the last few decades for various applications. These include ultra-thin high-index-contrast 1D and 2D dielectric gratings, known as high-contrast gratings (HCGs) and high-contrast metasurfaces (HCMs), which are increasingly becoming popular for achieving low-cost, compact, and high-performance optical components for photonic integration and novel optical devices. Recently HCM has been employed to couple o_-chip, out-of-plane light of a specific wavelength into on-chip, in-plane waveguides [1]. The coupling of mid-IR wavelengths into semiconductor waveguides has been realized using grating coupling method and inverted tapers [2].

Topics in Quantum Electronics, 4(2), 209, (1998).[2] D.I. Nikitichev, Y. Ding, M. Ruiz, M. Calligaro, N. Michel, M. Krakowski, I. Krestnikov, D. Livshits, M.A. Cataluna, E.U. Rafailov, “High-power passively mode-locked tapered InAs/GaAs quantum-dot lasers” Applied Physics B: Lasers and Optics. 103(3), 609, (2011).[3] Jehan Akbar, Lianping Hou, Mohsin Haji, Michael J. Strain, John H. Marsh, A. Catrina Bryce, Anthony E. Kelly, “High power (130 mW) 40 GHz 1.55 μm mode-locked distributed Bragg reflector lasers with integrated optical amplifiers,” Opt. Lett. 37, 344 (2012).

Title: Optical Devices and Application using 2D Metasurfaces

Dr. M. Qasim MehmoodAssistant Professor, Department of Electrical Engineering, Information Technology University (ITU), LahoreE-mail: [email protected]

Abstract:Metasurfaces are subwavelength-featured metamaterials that can effectively tailor the amplitude, phase and polarization of an incident electromagnetic

wave. Such pixelated control over light’s wavefront provides intriguing solution for the realization of on-chip photonics devices and systems. Initial demonstrations of such flat-surfaces heavily relied on the metal nano-resonators, which suffered from meager performance due to intrinsic losses associated with metals. State of the art research focuses on the development of new materials and methods to realize cost-effective, CMOS compatible and highly efficient metasurfaces. This talk will recapitulate the evolution of this interesting area of metasurfaces and will cover latest demonstrations of various phenomena (though metasurfaces such as lensing, light-twisting, holography, energy-harvesting etc.) by NanoTech lab of ITU.


Pakistan in 2005. From 2005 to 2010, he was with School of Electrical Engineering, The University of Manchester, UK where he first received his MSc (with distinction) and then PhD in electrical and electronic engineering. His doctorate thesis was on characterization of GaAs and InP based devices for optoelectronic applications. He is also working on development of solar cells through low cost techniques and optimized conversion and transmission of the generated energy to diversify power systems. His research work has been published in top tier journals such as IEEE Quantum Electronics, IEEE Electron Device Letters, Journal of Applied Physics, IET Optoelectronics, European Physical Journal and Renewable & Sustainable energy reviews.

Abstract:Continuous growth of optoelectronic industry demands for improved materials, devices and systems for the generation, transmission, detection, amplification and processing of optical signals. (The superiority of Heterojunction phototransistors (HPTs) over its other counterparts is also well established. HPTs exhibit an internal gain, due to transistor action, without high bias voltage as required for avalanche photodiodes and without excess noise due to avalanching. P-i-n and Schottky photodiodes lack internal or intrinsic gain and rely on preamplifiers or subsequent amplification arrangement. HPTs, on the other hand, can provide detection and amplification in a single device along with layer- and process-compatible characteristics with HBT-related technology. In this talk, key modelling elements will be discussed along with critical nonlinear mechanism in the optical gain, at relatively higher incident optical powers.

However, the coupling techniques for mid-IR wavelengths are still being investigated since the optical fibers currently available for launching mid-IR wavelengths into semiconductor waveguides have not been optimized to achieve the high coupling efficiency.In this paper we present the design of 2D metasurface integrated with strip waveguide in SOI to achieve high coupling efficiency for 3.8 µm wavelength. The metasurface design has been achieved using a commercial FDTD and the high coupling efficiency has been achieved by systematically optimizing the radius of circularly shaped unit cells and period between them by performing 3D FDTD simulations. The effective coupling efficiency is the performance metric in our case and it is designed as the ratio of the light coupled into strip waveguide to the difference of the light illuminated on the surface and the light reflected back due to interface. The effective coupling efficiency achieved for the designed 2D metasurface integrated with waveguide is 98% in the in-plane waveguide for the out-of-plane surface illumination. The achieved bandwidth of the structure is 1 µm. We believe our design is a good alternative for conventionally employed grating coupler and inverse taper. The integrated design also helps mitigate inefficient coupling using mid-IR fibers currently available and is consistent with the available lithography using 400 nm thick SOI for mid-IR applications. The monolithic integration can also be achieved using standard multi-project wafer (MPW) run.References:[1] Zhu, L., Yang, W., and Chang-Hasnain, “Very high efficiency optical coupler for silicon nanophotonic waveguide and single mode optical fiber,” Optics Express 25, 18462 (jul 2017).[2] Roelkens G., et al “III-V-on-Silicon Photonic Devices for Optical Communication and Sensing,” Photonics 2,969{1004 (sep 2015).

Title: Spectral Response Modelling and Analysis of Heterojunction Bipolar Phototransistors

Dr. Hassan Abbas KhanDepartment of Electrical Engineering, Lahore University of Management Sciences (LUMS), Lahore, PakistanE-mail: [email protected]

Brief Profile:Dr. Khan received the B.Eng degree in electronic engineering from GIKI,

Title: Micro- and Nano-scale Device Engineering for Photonic Integrated Circuits (PICs), IoT Platforms and Photovoltaic Applications

Engr. Prof. Dr. Ahmed Shuja SyedFounding Executive Director, Centre for Advanced Electronics & Photovoltaic Engineering & Advisor to the Rector & President (Engineering Programs), International Islamic University, Islamabad, Pakistan

Brief Profile:Prof. Shuja is the Advisor to the Rector & President, International Islamic University (IIU), Islamabad, Founding Executive Director of the Centre for Advanced Electronics & Photovoltaic Engineering and the Principal

Investigator of Islamic Development Bank’s Funded International Research Grants, namely, Advanced

Electronics Laboratories Project and Photovoltaic Energy Engineering Labs. He is also the Proponent & Focal Point of US Department of Energy’s Users Facility Access Agreement with International Islamic University and Govt. of Pakistan’s PSDP support grant to the Centre. Prof. Shuja holds MS and Ph.D. in Electrical & Electronic Engineering from Sweden and UK; respectively. Besides serving in EU/UK and USA during his professional career; he previously remained the Dean of Faculty of Engineering & Technology at IIU, Islamabad and Executive Director of Centre for Emerging Sciences, Engineering & Technology, Islamabad. Currently; He is also the Member Board of Governors of two universities in Pakistan. Dr. Shuja developed a pioneering teaching and research program, in Pakistan, in the area of Advanced Electronics over a decade ago. Dr. Shuja’s research group studies the engineering of circuits, devices & system for next-generation electronics/optoelectronics, sensing, energy and photonics applications with cross-disciplinary convergence. As guest scientist and visiting professor, Dr. Shuja maintained very close collaborative linkages with some of the world’s most renowned scientific facilities including the Lawrence Berkeley National Laboratory, Department of Energy, USA. Higher Education Commission of Pakistan has also focused and highlighted Dr. Shuja’s contributions in its official newsletters in February 2011, May 2015 and August 2016. Dr. Shuja instituted and chaired several international conferences and national workshops in Pakistan and had been a plenary/keynote speaker in numerous national and international conferences and colloquia. Dr. Shuja has led tangible projects developing both physical and academic infrastructures, facilities, departments, faculty, Centres etc. covering the financial, strategic and planning aspects. With a track record of winning several competitive projects funded both on national and international level; Dr. Shuja has supervised over 40 graduate (MS and PhD) students and published numerous international research communications including the book chapters, impact-factor journal papers and peer-reviewed international conference proceedings. Dr. Shuja is also member of various national level committees and has a track record of working closely with national and international bodies for the initiation, approval, execution and accreditation of institutions, academic and research programs, and devising the policies and strategies in Science and Technology arena.

Abstract:Micro-and Nano-scale engineering of devices and systems are at the heart of Frontier Technologies (FT), which are meant to reshape the way we live and think of the usage of technology on a commoner level. Research and development of micro- and nano-scale engineering for optoelectronic and photonics is in direct conjunction of requirements posed by the growing needs of industries such as communication, energy and human well-being. This talk will provide an overview of the optical and photonic device technologies based on micro- and nano-scale circuits and systems and their level of readiness for possible exploitation in Photonic Integrated Circuits (PICs) and Internet of Things (IoT) platforms and next-generation Photovoltaic applications. Further; this talk will be directed towards the advent of novel device engineering

with design, material and fabrication specific approaches to address the issues and complexities in making them available for the named transformative technologies. Some of the promising work conducted in our Centre on this account will also be shared.

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