PhD in Image Processing Software for Optical Coherence Tomography Systems

DTU Fotonik
Tuesday 13 Jun 17

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The Fiber Sensors & Supercontinuum Group at DTU Fotonik, Department of Photonics Engineering at the Technical University of Denmark is seeking a PhD student for a 3-year Scholarship in the field of image processing software for Optical Coherence Tomography (OCT) systems operating in the mid-infrared. The position is funded by the project “Spectrally shaped supercontinuum sources for high-resolution Optical Coherence Tomography medical imaging and non-destructive testing” (ShapeOCT).

Summary of the project ShapeOCT
ShapeOCT will use Danish strongholds in supercontinuum (SC) light source and photonic crystal fiber (PCF) technology to develop a new generation of SC light sources with shaped noise and power spectra that are optimal for use in a new generation of ultra-high resolution Optical Coherence Tomography (UHROCT) systems. Noise reduction and spectral shaping of the SC will be done by intricate dispersion design and using normal dispersion femto-second pumping, fiber tapering and concatenation. Three state-of-the-art spectral domain UHROCT systems will be developed that operate (I) at 1.3µm with a low-noise SC source using a silica PCF, and (II, III) in the mid-infrared (MIR) at 4 and 7µm with an SC source using a ZBLAN and chalcogenide fiber, respectively. 

The improved resolution of UHROCT system (I) will be evaluated against a commercial OCT system in skin cancer diagnostics. All UHROCT systems I-III are highly suited for non-destructive testing (NDT) and will be evaluated against each other and existing OCT systems for their increased resolution and penetration depth in testing of fiber-reinforced polymer (emerging construction material). For the MIR SC sources and OCT systems ShapeOCT will invest in state-of-the-art equipment for fiber drawing and glass manufacturing to establish a chalcogenide MIR fiber technology platform in Denmark and move the SC source into the 3-12µm molecular fingerprint region, which is of fundamental importance for not just OCT, but also for ultra-fast spectroscopy tools for cancer detection, pollution, and food and soil quality monitoring. Nano-imprinting of the end-facet of chalcogenide fibers will be developed for improved power handling and low loss coupling (today 40% Fresnel loss is suffered), and ultra-broadband MIR detectors will be developed based on upconversion.

Responsibilities and tasks
The selected PhD student will participate in a project team of 4 postdocs and 4 PhD students hired specifically on the project, in addition to the participating senior staff. The student will specifically be in charge of the image processing software side of the UHROCT systems and is thus expected to  

  • Develop and implement state-of-the-art imaging software in 3 UHROCT systems
  • Take part in analysing the images of skin cancer cells and of fiber-reinforced polymer and teeths
  • Interact strongly with Univ. Kent and spend a period of about 6 months there for training in OCT

Qualifications
Candidates should preferably have an MSc degree in image processing software and if possible with a final project or one or more courses in OCT or equivalent. In addition we expect candidates to 

  • Be fluent in English
  • Be willing to work in close collaboration with an internal project team and with external international partners
  • Be willing to supervise master and bachelor students.

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.

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 terms of employment
The appointment will be based on the collective agreement with the Confederation of Professional Associations. The allowance will be agreed with the relevant union. 

The period of employment is 3 years, starting from September 1, 2017 or as soon as possible thereafter.

Assessment
The assessment of the applicants will be made by Professor Ole Bang.

Further information
Further information may be obtained from Professor Ole Bang, oban@fotonik.dtu.dk, tel.: +45 4525 6373.

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

Application procedure
Please submit your online application no later than June 30, 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 220 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.