Integrated multi-wavelength lasers : design, control and applications

#photonics #laser #PIC #THZ #frequencyCombs #montreal #networking #engineering #technical
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Multi-wavelength lasers have emerged as a promising solution for a range of applications: from sensing to high-frequency signal generation or all-optical processing. For instance, they are an appealing solution to generate mm-wave or THz signals: besides the reduce footprint or the lack of required alignment, the coupling between modes leads to lower noise level. However, lasing is still a “winner takes it all” process, thus simultaneous emission at multiple wavelengths can be a challenging target to reach. A rather careful design or a precise control mechanism are typically required.

In this talk, I will briefly review demonstrated schemes to implement multi-wavelength lasers on Photonic ICs, with a particular focus on laser designs compatible with (active) generic foundry platforms. I will discuss the difficult trade-off between flexibility, tunability and stability, and highlight the approach we chose relying on a phase-controlled optical feedback loop. Finally, I will present some of our recent results exploiting such multi-wavelength lasers for new applications such as spectral multiplication of frequency combs and wavelength conversion.



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  • Date: 27 Apr 2023
  • Time: 09:30 AM to 10:30 AM
  • All times are (UTC-05:00) Eastern Time (US & Canada)
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  • 3480 University Street
  • Montreal, Quebec
  • Canada H3A 0E9
  • Building: McConnell Engineering building
  • Room Number: MC603

  • Contact Event Hosts
  • For extra information, please contact Prof. Odile Liboiron-Ladouceur odile.liboiron-ladouceur@mcgill.ca Prof. Lawrence Chen lawrence.chen@mcgill.ca

  • Starts 29 March 2023 09:00 AM
  • Ends 27 April 2023 09:30 AM
  • All times are (UTC-05:00) Eastern Time (US & Canada)
  • No Admission Charge


  Speakers

Martin Virte Martin Virte of Vrije Universiteit Brussel (VUB)

Topic:

Integrated multi-wavelength lasers : design, control and applications

Biography:

Martin Virte is a professor with the Brussels Photonics (B-PHOT) group of the Vrije Universiteit Brussel (VUB). Born in France, he graduated as an engineer from the French “Grande Ecole” Supélec (now CentraleSupélec, France) in 2011. He then received his PhD in engineering in 2014 with the highest honours from the Vrije Universiteit Brussels (VUB, Brussels, Belgium) and Supélec as part of a joint PhD program. In 2015, he received a 3-year post-doctoral fellowship from the Research Foundation – Flanders (FWO) to pursue his research work at VUB. He then became research professor at the VUB three years later. Then, in 2020, he received a prestigious Starting Grant of 1.5 MEuros from the European Research Council (ERC) to explore how multi-wavelength lasers can be exploited for all-optical signal processing of mm-wave and THz signal. He became professor (tenure track) at the Vrije Universiteit Brussel the same year.

 

Martin’s work initially focused on the nonlinear dynamics of semiconductor lasers from its fundamental aspect to potential applications. While this topic is still a central focus point of his current research, Martin is also exploring new facets of the problem including the design of novel laser systems on Photonic Integrated Circuits, such as Multi-Wavelength Lasers, the impact of laser dynamics in the context of fiber sensing, and the use of laser dynamics for all-optical processing.