Research Staff

Colin Mitchell

Collin Mitchell

Colin Mitchell received his PhD from UMIST in 2005 for work in strained and strain compensated materials for intersubband optical devices (QCL and QWIP). He is currently employed as a Research Fellow in the Silicon Photonics group at the University of Southampton. His work focuses mainly on laser integration (on-chip) with group IV materials and developing nanoparticle-enhanced rare earth-doped dielectric waveguide lasers. Other work include projects on the germanium platform for detection and optical integration across the infrared spectrum and systems for standoff detection.

He worked at The University of Manchester between 2005 and 2010 investigating materials for optical and high speed devices. He has also worked for Hyundai Semiconductors Europe and on projects with various industrial and government partners leading to professional qualifications in project management – Certified Associate in Project Management (CAPM) with the Project Management Institute (PMI). During his PhD he won an IEEE best conference paper for his work on high strained and strain compensated near infrared intersubband optical devices.

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Stevan Stankovic

Stevan Stankovic

Stevan Stanković received Dipl.Ing. and M.Sc. degrees in Optoelectronics from the Faculty of Electrical Engineering, University of Belgrade, Serbia and a Ph.D. degree in Electrical Engineering from Ghent University, Belgium. From 2006, his research focused on silicon photonics, working initially on passive devices suitable for mid-IR applications.

From 2008 to 2012, he was working in the Photonics Research Group of Ghent University, where he designed and demonstrated evanescently-coupled hybrid III-V/Si lasers, based on adhesive bonding. In January 2013, he joined the Silicon Photonics Research Group at University of Southampton, as a post-doctoral Research Fellow. Currently, he is a technical manager of Silicon Photonics Capability at University of Southampton.

His research interest includes light sources and hybrid integration techniques in silicon photonics and, in general, technical challenges in fabrication of photonic integrated circuits. He authored and co-authored more than 35 journal and conference papers in the field of silicon photonics.

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Ali Khokhar

Ali Khokhar

Dr Khokhar has an MSc and PhD from the University of Glasgow. He is working in the field of micro and nano device fabrication since 2001. He is an electron beam (e-beam) lithography specialist and holding the post of Senior Research Fellow at the University of Southampton.

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Xia Chen

Xia Chen

Xia (Ken) received his BEng and PhD degrees in Electronic Engineering from the Chinese University of Hong Kong (CUHK), in 2006 and 2010, respectively. After graduation, he worked on the UK Silicon Photonic Project in University of Surrey and University of Southampton. In December 2013, he joined Huawei Technologies Co. Ltd as a Senior Engineer to work on photonic packaging for silicon photonic devices. In 2015, he rejoined University of Southampton as a Research Fellow. He was awarded the TSMC Outstanding Student Research Award in 2010, and the Newton International Fellowship by the Royal Society in 2011. He has authored and coauthored over 60 papers in technical journals and international conferences and 3 patents.

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Ke Li

Ke Li

Ke Li (M’10) received his MSc.degree in radio-frequency communications engineering and the Ph.D. degree in Electronic engineering from the University of Southampton U.K, in 2005 and 2010, respectively. He has nine years (14 chips) silicon proven experience in fully customized analogue and microwave signals (>40Gb/s) CMOS IC design down to 28nm by using variety industry standard processes. He is currently a research fellow with the silicon photonics group in Optoelectronics Research Centre, University of Southampton. He is also working with Wireless Communication Group in the School of Electronics and Computer Science to investigate the physical implementation of fully parallel LDPC/Tuobe decoders. His Research interest includes design of high speed modulator driver and TIA circuit, modelling and design of ultra-wide band VCO and PLL circuit.

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Callum G. Littlejohns

Callum Littlejohns

Dr Callum Littlejohns completed his PhD in the field of Silicon Photonics at the Optoelectronics Research Centre, University of Southampton in March 2015, having previously obtained a First Class Honours degree in Electronic Engineering at the University of Surrey. He has now begun his career as a Research Fellow at Nanyang Technological University in Singapore, but remains part of the Silicon Photonics group as a visitor. He has a track record of excellence, having received multiple awards throughout his academic life, including the Information Overload category winner at the 2015 EPSRC ICT Pioneers Award and the runner-up prize in the Best Student Poster award at the 2014 Optoelectronics Research Centre Photonics Day. His work has been published in multiple peer-reviewed journals including Scientific Reports, a Nature Publishing Group journal. His work was also selected as a prestigious post-deadline paper at the IEEE Group IV Photonics conference in Paris, 2014. The work completed during Callum’s PhD has been protected by two separate patents, both fully supported by the University of Southampton.

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Antulio Tarazona

Antulio Tarazona

Antulio Tarazona has combined commercial activities, at corporate and start up level, with academic research. He has over 20 years’ experience carrying out research and development in thin film deposition systems, computational chemistry, vacuum design and surface characterisation in different countries; including, Venezuela, Japan, Germany and the UK. From 2001 until his departure in 2006, after 4 years in R&D in BOC Edwards, he focused with the same company on business activities ranging from technical sales to business development in the semiconductor and solar sectors. Amongst his commercial achievements with BOC Edwards was the conception and introduction of an integrated system for treating and recycling the exhaust stream in the solar thin film production, generating revenue potential in excess of £6M.

He joined the Silicon Photonics group in April 2014 to develop low temperature Silicon as part of an EPSRC-funded programme to investigate multi-layered silicon photonics platforms.

He has a Physics degree from UCV in Caracas (Venezuela), a MsEng in Electronics from Tohoku University in Sendai (Japan) and a PhD in Applied Physics from Duesseldorf Univeristy (Germany).

He is fluent in English, German, and Spanish plus conversational Japanese knowledge.

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Milan Milosevic

Milan Milosevic

Dr. Milan Milosevic is a research fellow at the Optoelectronics Research Centre, University of Southampton, working on both industry and research council funded projects, led by Prof. Graham Reed. Previously he was working as an engineer and technology consultant in the US and Japan, and as a research fellow at the University of Surrey where he also obtained his PhD degree and received the Vice-Chancellor’s Award for Early Career Excellence in 2012. He is particularly involved in high speed optical transceiver technology and is one of the pioneers in mid-infrared silicon photonics technology for emerging applications.

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Jordi Soler Penades

Jordi Soler Penades

After my graduation with a BEng (Hons) in electronic engineering from the University of Surrey in 2012 I enrolled in a PhD programe with the Silicon Photonics group at the University of Southampton. My research has been based in mid-infrared passive devices for sensing applications. We developed waveguides, slot waveguides, sub-wavelength suspended waveguides, multimode interferometers (MMI), angled MMI, grating couplers and Mach–Zehnder interferometers both in SOI and in materials transparent in a wider transmission band in the mid-IR like suspended silicon, germanium on silicon and amorphous germanium. The main of my current research is to produce a sensing platform for the mid-IR region of the spectrum.

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Scott Reynolds

Scot Reynolds

Scott Reynolds is a research assistant at the University of Southampton specialising in silicon photonic packaging. Having graduated from the University of Surrey with a bachelors in electronics and computer engineering, Scott joined the silicon photonics group as a PhD student in 2011 and subsequently moved with the group to join the Optoelectronics Research Centre at the university of Southampton. In his time here Scott has been included as an inventor on a patent, co-authored a book chapter and has contributed towards more than 19 journal and conference publications. Looking forward, Scott is looking forward to working with his colleagues, industrial partners and the versatile Southampton facilities to produce a packaging solution which is viable for mass market application.

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Cosimo Lacava

Cosimo Lacava

Cosimo is from Puglia, a region located in the south part of Italy. Cosimo took his Bachelor of Science (Electronic Engineering and Information Technology) at Polytechnic of Bari (graduated with honours, 2008) and his Master of Science (Electronic Engineering) at the University of Pavia (graduated with honours) in 2011. He then joined the Quantum Electronics research group at the University of Pavia, as PhD student, working on nonlinear optical properties of compact, integrated waveguides, mainly made by using the silicon photonics platform. He obtained his PhD in Optoelectronics and Electronic Engineering in 2014. He continued working at the Quantum Electronics Laboratory as Postdoc researcher, working on the development of novel Silicon Photonics transceiver device for the next generation optical network, in the frame of the “Fabulous” European Project. At the end of 2014 he moved to Southampton to join ORC as Research Fellow.

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Kapil Debnath

Kapil Debnath

Kapil Debnath received his PhD in 2013 from the University of St Andrews for his work in optical interconnections using silicon photonic crystal cavities. He joined the Silicon Photonics group in 2015 as a post-doctoral research fellow. Currently his main research interest includes energy efficient electro-optic modulator, silicon based light sources and nonlinear photonics.

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Milos Nedeljkovic

Milos Nedeljkovic

Milos is a research fellow in the Silicon Photonics group at the Optoelectronics Research Centre in the University of Southampton, working on the EPSRC funded project DzMIGRATIONdz, lead by Prof. Goran Mashanovich. His research is in the field of mid-infrared group-IV material photonics, focusing on integrated photonic devices with possible applications in a broad range of sensing related applications. He has authored or coauthored more than 80 papers in technical journals and international conferences. He was also selected to attend the Global Young Scientists Summit in Singapore in 2014, and received the Faculty of Physical Sciences and Engineering Dean’s Award for Early Career Excellence in 2015. He completed his Ph.D., entitled DzSilicon photonic modulators for the mid-infrareddz at the ORC in 2014, having started his PhD at the University of Surrey and moved to Southampton with the other members of the Silicon Photonics group in 2012. Previously he received his undergraduate Master’s degree in Communications Engineering from Durham University in 2009.

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Mehdi Banakar

Mehdi Banakar

Mehdi received his bachelor’s degree in 2005 and a Master degree with distinction from the University of Southampton in 2008. His PhD at University ofSouthampton was in DzSub-micron texturing for photovoltaic antireflection and light-trappingdz, he has explored 3 novel anti-reflection schemes based on sub-micron scale texturing of silicon and received his degree in 2015.He has a strongbackground in photovoltaic, extensive experience with micro/nanofabrication processes. Mehdi joined The Silicon photonic Group in 2015 to explore optical modulation/detection and integration.

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Abdul Shakoor

Abdul Shakoor

Abdul Shakoor received PhD in optoelectronics from University of St Andrews, Scotland and he is Erasmus Mundus scholar, which funded his 2 years European masters in photonics programme run jointly by university of St Andrews, Scotland, University of Ghent, Belgium and Royal Institute of Technology, Sweden. He obtained first degree (Bachelors of Engineering in Avionics) from National University of Science and Technology (NUST), Pakistan. His main interest is developing novel integrated photonic devices for telecommunication and sensing applications. Since February 2017, he has been working as a research fellow in the silicon photonics group of Optoelectronics Research Centre (ORC). Prior to joining ORC, he worked as a research associate at University of Glasgow and Basic Research Laboratories of Nippon Telegraph and Telephone Corporation (NTT-BRL), Japan. His research highlights include development of electrically pumped on-chip silicon nano light source operating at telecommunication wavelengths with high power spectral density, development of silicon electro-optic modulator operating with sub fJ/bit switching energy and monolithic integration of nanophotonic structures with CMOS detectors for sensing applications.

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Han Du

Han Du

Han Du received his BS degree from Shanghai Jiao Tong University (SJTU) in 2012 and his PhD degree from University of Singapore (NUS) in 2016, respectively. Currently he is working as Research Fellow in the silicon-photonics group at Optoelectronics Research Centre (ORC), University of Southampton. His research areas include silicon photonic devices, optomechanics, MEMS/NEMS, etc. Han is special in fabrication of micro/nano silicon photonic devices. He has authored and co-authored over 10 journal and conference papers.

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Alex Bazin

Alex Bazin

Alexandre Bazin graduated with a Master in Quantum Devices and Nanosystems from Université Paris-Diderot (France) in 2009. His PhD work focused on Hybrid Silicon-On-Insulator/III-V photonic crystal nanolasers at the Laboratoire de Photonique et de Nanostructures-CNRS (now C2N) in the south of Paris where, in particular, he demonstrated optical memory effects lasting more than 2s with ultra-low switching energy (sub-fJ). After the completion of his PhD in 2013, he worked as a post-doc researcher at the University of Tokyo on thermoelectric applications using a silicon phononic approach, before joining, in 2014, the Photonic department at Ghent University & IMEC (Leuven) to study optomechanical effects (Stimulated Brillouin Scattering, Cavity Optomechanics) in the Silicon-On-Insulator platform and integration of 2D material (Graphene, TMDCs). His current work is granted by the COSMICC European project and will be dedicated to the development of new generations of ultra-fast SiGe modulators as well as new demonstrators in the hybrid SiN/SOI platform. He joined the Silicon Photonics Group in in May 2017.

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