Optical Sciences

Biomolecules and nanostructures

The Optical Sciences group studies the interaction of light and matter at the nanoscale. We do this by exploring ways to shape light and its environment. It's what we call active and passive control. Our current focus is on the interaction of light with biomolecules and nanostructures. We are part of Twente University's Department of Science and Technology and member of the MESA+ institute.
We participate in the EU-COST actions MP1102: Coherent Raman microscopy (MicroCor) and CM1202: Supramolecular photocatalytic water splitting (PERSPECT-H2O)


Integrated Waveguide Amplifiers for Optical Interconnects (IWAOI)

  • Sergio Vázquez-Córdova - PhD student
  • Yean-Sheng Yong - PhD student
  • Sonia GarcĂ­a Blanco - Scientific Staff

  • The increasing bandwidth requirements and interconnect data rates require use of optics for data transport at ever smaller distances. Currently, the biggest obstacles in the commercialisation of optical backplane technology for high performance computing devices are performance and cost considerations. High optical losses in optical interconnects due to materials, signal routing, and input/output coupling give rise to limited performance.
    The research project targets the development of optical waveguide amplifiers based on rare-earth-ion doped amorphous Al2O3 as well as potassium yttrium double tungstate (KYW). We aim at investigating and developing optical amplifiers operating at 850 nm, 1000 nm and 1550 nm wavelengths and optimise their integration into optical backplanes.


    The following articles have been published regarding this project:

    Temperature-dependent absorption and emission of potassium double tungstates with high ytterbium content

    (abstract) (full pdf)
    Yean-Sheng Yong, Shanmugam Aravazhi, Sergio A. Vázquez-Córdova, Joan J. Carjaval, Francesc Díaz, Jennifer L. Herek, Sonia M. García-Blanco, and Markus Pollnau
    Optics Express
    Optics Express Vol. 24, Issue 23, pp. 26825-26837 nov. 1 2016
    Printable version