Category Archives: Uncategorized

Potluck 2024

We concluded our 2024 activities with a potluck dinner this week.

As is tradition in our group, we shared stories, joys from the past year, accompanied by plenty of beer and wine.

Happy New Year, everyone! Wishing you all another fruitful year in 2025!

Maarten graduated

After a long period of study, Maarten Eijkel successfully defended his Master’s thesis titled “Integrated microwave photonic technique for RF interference mitigation”, on September 30th.

In his defense, the whole group suited up to bang the drum for Maarten. Congrats, Maarten!

MESA+ day

We had a great time at the annual MESA+ day at the Kinepolis cinema this week!

Steven and Akshay gave two well received talks, sharing our latest SBS discoveries and exciting progress in fabrication. Additionally, Tarik and Chuangchuang also did a great job with their posters, which drew a lot of attention.

Congrats to everyone for the nice presentations!

Invited paper in Optical Materials Express

We are excited to share our invited paper in the optomechanical photonics special issue of Optical Materials Express, titled “Brillouin nonlinearity characterizations of a high refractive index silicon oxynitride platform”.

In this paper, we explore the operating principles of an ultra-sensitive triple-intensity-modulated lock-in amplifier setup for Brillouin characterization, packed with a lot of practical experimental tips throughout.

Congrats Steven!

Michael Steel visit our lab

Prof. Michael Steel from the Macquarie University visit our lab this month. During his visit, we had a great discussion about our latest Brillouin photonics results, and he shared some really insightful feedback. Thank you for visiting us, Mike!

group photo with Prof. Steel (second from the left)

ECIO 2024

This week, we attended the 2024 European Conference on Integrated Optics in Aachen, Germany. We got the opportunity to present and discuss the latest progress happening in our group with four oral and three poster presentations.

  • Shangqing presented a simultaneous Notch Filtering and True Time Delay RF Photonic Front-end on the Si3N4 platform.
  • Maarten demonstrated an RF photonic self-interference cancellation system, also on the Si3N4​ platform.
  • Chuangchuang showcased a Microwave Photonic (MWP) Notch Filter using Thin-Film Lithium Niobate (TFLN).
  • Zheng presented work on thermoelastic acousto-optic modulation in TFLN.
  • Steven discussed Brillouin-based applications in TFLN.
  • Yvan provided insights into SBS characterizations and Brillouin-based applications in tellurite-covered Si3​N4.
  • Akhil demonstrated an SBS-based MWP notch filter in tellurite-covered Si3​N4.

Congrats all for these beautiful results!

New visiting student: Dharma Prasetya Permana

We welcome Dharma Prasetya Permana to join our group as an intern for the next few months.

Dharma obtained his BSc in Physics from Bandung Institute of Technology (ITB), Indonesia in 2023. Before he starts his Erasmus Mundus Joint Master EuroPhotonics program in September 2024, he will work with Yvan on the four-wave mixing experiments in our group.

Good luck, Dharma! Hope you will enjoy your time here!

New publication in APL Photonics

We are pleased to share a new publication of our paper at APL Photonics , titled “Observation of a Brillouin dynamic grating in silicon nitride waveguides”. In this paper, we report the first ever observation of Brillouin dynamic gratings in silicon nitride waveguides. Congrats Roel and Jasper!

Principle of the Brillouin dynamic gratings