Photonic integrated circuit for high power millimeter wave generation: Demonstration of a photonic circuit able to radiate high powers in the millimeter to THz range.

 

ESR: Andrzej Jankowski

 

Andrzej Jankowski has received his Master Degree in Electronics and Telecommunications from the Wroclaw University of Technology in Poland. He has gained experience as an IBM employee (Wroclaw, Poland), faculty member of University of Duisburg-Essen, and Production and Development Engineer in ACST GmbH in Germany. He is involved in Marie Sklodowska-Curie “FIWIN5G” Innovative Training Network. His research topic is “Photonic integrated circuit for high power millimeter wave generation” at  III-V Lab in France. Main goals include: design of the circuits, clean-room fabrication and characterization of the fabricated circuits.

 

Use of optical signal means to process and generate millimeter to THz signals has proven to have significant advantages compared to more classical electrical means:

  • Heterodyne generation in a photomixer illuminated with two optical frequencies with a separation corresponding to the frequency to be generated is an efficient way to get high powers that can be easily tuned over very wide frequency ranges. This can be done with a dual wavelength laser combined with a high speed photodetector.
  • Tuning the phase of the generated millimeter to THz wave can easily been done by tuning the phase of one of the two optical tones. The phase shift of the generated tone is then equal to the phase shift of the optical tone. This way very large phase shifts can be obtained easily and used for beam steering for example.
  • The generated power can be adjusted and amplified in the optical domain. It can also be increased by integrating in parallel a set of photomixers.

Indium Phosphide (InP) wafers have been proven to be a platform of choice to integrate different functions like single mode laser emission, optical phase modulation, optical amplitude modulation, optical amplification, photodetection into monolithic integrated circuits. Up to now this has been mainly applied for optical fiber based communications. The purpose of this ESR is to apply it to generation of signals from millimeter to Terahertz frequencies. Solutions in order to increase the output power and to perform beam steering of the generated signal will be considered more specifically. The ESR/ PhD student will mainly work at III-V Lab on the design of the circuits, clean-room fabrication of the circuits and characterization of the fabricated circuits.

 

Supervisor: Frederic Van Dijk

Host University: III-V Lab

Secondment: UC3M