BGPP 2020 Special Symposium on Recent Advances in Ultrafast Laser Waveguide Writing in Transparent Materials

Since the 1996 seminal paper [1], the field of ultrafast laser waveguide writing in transparent materials has grown significantly. Once a lab peculiarity, the method is now used by many start-up companies for real-world applications and has, in many cases, proven competitive to existing and well-entrenched photolithographic approaches. Nevertheless, ultrafast laser waveguide writing remains an intriguing topic for research. On the one hand, it is often the only technique that can produce optical waveguides in many important materials opening up device miniaturisation across different fields. On the other hand, improving our fundamental understanding of the modification mechanism involved with irradiating materials can still provide new and significant improvements to waveguide properties.

This special symposium forms part of the 2020 BGPP Topical Meeting. Submissions reporting on novel results across applications utilizing waveguide writing, from optical communications to quantum optics and astrophotonics, are welcomed. In addition, papers are being solicited to present new insights on the refractive index modification mechanisms and in the demonstration of laser waveguide writing within new materials that have the potential to open additional new applications.

The topics of solicited submissions include but are not limited to waveguide writing for:

  • Optical communication devices
  • Quantum photonic applications
  • Astrophotonic devices
  • Integrated sensing applications
  • Fundamental understanding of the refractive index modification
  • Novel 3D integrated photonic devices
  • Lab-on-a-chip/Lab-in-a-fiber devices
  • Fabrication of waveguidesand components in new materials

Symposium Organizers:
Roberto Osellame, CNR - Institute for Photonics and Nanotechnologies, Italy
Réal Vallée, COPL, Laval University, Canada

Symposium on Optical Fiber and Grating Based Biomedical Sensors

As a part of BGPP2020 conference, this Symposium will bring together photonic device designers, physicists and (bio)chemists to review the most advanced optical fiber devices (optical fibers, fiber gratings and other waveguide technologies) able to detect (bio)chemical analytes and/or perform biomedical applications with high sensitivity, selectivity, and robustness, while lowering the limit of detection to levels required in practical applications.

Invited and Contributed talks will focus on tailoring light coupling mechanisms between engineered optical waveguides and their functional surface (if any) in response to external perturbations or surrounding medium changes. Specifically, the aim will be to understand how to optimize the transducing mechanisms to (1) encode the presence of a given analyte in a measurable change in the optical device properties or (2) achieve a specific functionality including tweezing or micro-surgery among others, ensuring in all cases reliability, reproducibility and robustness for in vitro or even in situ applications.

Of particular importance are issues regarding the refractive index modulation, optical properties of the devices, scattering, porosity and thickness of the functional layers and how these parameters can be optimized to enhance the overall performances. Functionalization strategies for bare, metal-coated, oxide-coated or graphene-coated glass and polymer surfaces for Surface Plasmon Resonance (SPR) based sensors or nanoparticle-assisted devices will also be reviewed and discussed.

Symposium Organizers:
Prof. Christophe Caucheteur, Université de Mons, Belgium