PhD position on All-Optical Signal Processing for High-Spectrally Efficient Transmission

DTU Fotonik
Wednesday 21 Jun 17

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Apply no later than 31 July 2017
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Current communication networks rely on optical fibres to sustain the constant increase in data rate driven by the perpetual growth of Internet traffic. In order to efficiently utilize optical fibres, it is critical that the spectral efficiency of optical communication systems keeps improving to match the increasing demand for high-speed information exchange. In optical communications, however, the nonlinear properties of optical fibres cause distortion to the signal and no clear solution tackling the problem has yet been found. Several approaches have been proposed mainly relying either on all-optical or electrical solutions to either mitigate or compensate the signal distortion. All-optical approaches to nonlinearity compensation and signal regeneration is of particular interest as it can operate over multiple WDM channels, therefore removing the need for the massive parallelization required by electrical techniques, and thus potentially decreasing power consumption and latency.

The SPOC centre of excellence has a strong focus on optical signal processing for orders of magnitude improvements in bandwidth and energy efficiency exploring several different material platforms in the quest for the ultimate transmission capacity.

The Ph.D. project will be carried out in the High Speed Optical Communications group (HSOC) in the Department of Photonic Engineering at the Technical University of Denmark. The HSOC group is at the very forefront of international research in optical communication technology and holds a number of world records in ultra-high speed optical communication. There is access to state-of-the-art experimental facilities. The group is highly international and encourages collaborative work and an informal working environment.

Responsibilities and tasks
This Ph.D. position will be part of the SPOC centre within the Flagship addressing Information theory, capacity and advanced coding and will investigate: 

  • Numerical investigation of all-optical signal processing techniques with a strong focus on nonlinearity mitigation and signal regeneration for highly-spectrally efficient optical communication systems
  • Characterization and optimization of novel signal processing schemes based on different nonlinear platforms, e.g. nonlinear fibres, silicon- and III-V waveguides
  • Design and implementation of experimental demonstrations of transmission reach and spectral-efficiency enhancement
As part of the Danish Ph.D. program the student will follow a number of Ph.D. courses as well as take part in teaching. Furthermore, there will be the opportunity to carry out a longer external research stay. We have close collaborations with numerous internationally leading universities and research organizations.

Qualifications
Candidates should have a master's degree in engineering or a similar degree with an academic level equivalent to the master's degree in engineering.

Approval and Enrolment
The scholarships for the PhD degree are subject to academic approval, and the candidates will be enrolled in one of the general degree programmes of DTU. For information about the general requirements for enrolment and the general planning of the scholarship studies, please see the DTU PhD Guide.   

Assessment
The assessment of the applicants will be made by Associate Professor Michael Galili and Professor Leif K. Oxenløwe.   

We offer
We offer an interesting and challenging job in an international environment focusing on education, research, scientific advice and innovation, which contribute to enhancing the economy and improving social welfare. We strive for academic excellence, collegial respect and freedom tempered by responsibility. The Technical University of Denmark (DTU) is a leading technical university in northern Europe and benchmarks with the best universities in the world.  

Salary and appointment terms
The salary and appointment terms are consistent with the current rules for PhD degree students. The period of employment is 3 years.  

Workplace
Will be at DTU Fotonik, Department of Photonics Engineering, at the Kgs. Lyngby Campus.   

Further information
Further information may be obtained from Associate professor Michael Galili, mgal@fotonik.dtu.dk  or Professor Leif K. Oxenløwe, lkox@fotonik.dtu.dk

You can read more about DTU Fotonik on www.fotonik.dtu.dk

Application
Please submit your online application no later than 31 July 2017. Applications must be submitted as one pdf file containing all materials to be given consideration. To apply, please open the link "Apply online," fill in the online application form, and attach all your materials in English in one pdf file. The file must include: 
  • A letter motivating the application (cover letter)
  • Curriculum vitae
  • Grade transcripts and BSc/MSc diploma
  • Excel sheet with translation of grades to the Danish grading system (see guidelines and excel spreadsheet here)

Candidates may apply prior to ob­tai­ning their master's degree, but cannot begin before having received it.

All interested candidates irrespective of age, gender, race, disability, religion or ethnic background are encouraged to apply.

DTU Fotonik has 210 employees with competences in optics and is one of the largest centers in the world based solely on research in photonics. Research is performed within optical sensors, lasers, LEDs, photovoltaics, ultra-high speed optical transmission systems, bio-photonics, nano-optics and quantum photonics.   

DTU is a technical university providing internationally leading research, education, innovation and scientific advice. Our staff of 5,800 advance science and technology to create innovative solutions that meet the demands of society; and our 10,600 students are being educated to address the technological challenges of the future. DTU is an independent academic university collaborating globally with business, industry, government, and public agencies.